DNA Fingerprinting II - Austin Community College District · DNA Fingerprinting II Usage of Restriction Enzymes in DNA Fingerprinting Analysis EVT 002127K 3 EDVOTEK - The Biotechnology

EVT 002127K

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225DNA Fingerprinting IIUsage of Restriction Enzymes in DNA Fingerprinting Analysis

Storage: See Page 3 for specifi c storage instructions

EXPERIMENT OBJECTIVE:

The objective of this simulated forensic analysis is to develop an understanding of the use of restriction

enzymes as applied to RFLP-based DNA fi ngerprinting.

Updated

Revised

and

The Biotechnology Education Company ®

EDVOTEK, Inc. • 1-800-EDVOTEK • www.edvotek.com

DNA Fingerprinting IIUsage of Restriction Enzymes in DNA Fingerprinting Analysis

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EDVOTEK - The Biotechnology Education Company® • 1-800-EDVOTEK • www.edvotek.com

Table of Contents

Page

Experiment Components 3

Experiment Requirements 3

Background Information 5

Experiment Procedures

Experiment Overview and General Instructions 13

Restriction Enzyme Digestion 14

Electrophoresis

Agarose Gel Preparation 16

Conducting Electrophoresis 20

Staining and Visualization of DNA 22

Method 1: Staining with InstaStain® Methylene

Blue Cards

Method 2: One-Step Staining and Destaining

with InstaStain® Methylene Blue

Study Questions 25

Instructor's Guidelines 27

Notes to the Instructor 28

Pre-Lab Preparations

Restriction Enzyme Digestion 30

Electrophoresis 33

Quantity Prep for Agarose Gel Electrophoresis 34

Experiment Results and Analysis 35

Study Questions and Answers 36

Material Safety Data Sheets 37

All components are intended for educational research only. They are not to be used for diagnostic or drug purposes, nor adminis-tered to or consumed by humans or animals.

THIS EXPERIMENT DOES NOT CONTAIN HUMAN DNA. None of the experiment com-ponents are derived from human sources.

EDVOTEK, The Biotechnology Education Company, and InstaStain are registered trademarks of EDVOTEK, Inc.. Ready-to-Load and UltraSpec-Agarose are trademarks of EDVOTEK, Inc.

This experiment contains reagents and materials for six groups.


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EDVOTEK - The Biotechnology Education Company® 1-800-EDVOTEK • www.edvotek.com

FAX: (301) 340-0582 • email: [email protected]

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Experiment Components

Contents Storage

A Crime scene DNA sample, -20°C freezer pre-cut with Restriction Enzyme 1B Crime scene DNA sample, -20°C freezer pre-cut with Restriction Enzyme 2

(Samples A and B are ready for electrophoresis)

C Suspect #1 DNA sample -20°C freezerD Suspect #2 DNA sample -20°C freezerE Standard DNA Fragments -20°C freezerF Enzyme Reaction Buffer Room tempG Dryzymes™ Restriction Enzyme 1 (Eco RI) Room tempH Dryzymes™ Restriction Enzyme 2 (Hind III) Room tempI Reconstitution buffer -20°C freezerJ Enzyme Grade water -20°C freezer

• 10x Gel Loading Solution• UltraSpec-Agarose™ powder• Concentrated electrophoresis buffer• InstaStain® Methylene Blue • 1 ml pipet• 100 ml plastic graduated cylinder • Microtipped Transfer Pipets

• Horizontal gel electrophoresis apparatus• D.C. power supply• Automatic micropipets with tips• Water bath (45°C)• Balance• Hot plate, Bunsen burner or microwave oven• DNA visualization system (white light)• Small plastic trays or large weigh boats (for gel destaining)

• Safety goggles and disposable laboratory gloves• Pipet pumps• 20 ml and 250 ml beakers or fl asks• Hot gloves• Marking pens• Distilled or deionized water• Ice

Requirements

This experiment contains reagents for six groups.


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Duplication of this document, in conjunction with use of accompanying reagents, is permitted for classroom/labora-tory use only. This document, or any part, may not be reproduced or distributed for any other purpose without the written consent of EDVOTEK, Inc. Copyright © 1996, 1997, 1998, 2000, 2001, 2006, EDVOTEK, Inc., all rights reserved EVT 002127K

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DNA Fingerprinting

Figure 1: Examples of restriction enzymes and the organism of origin.

When fi rst introduced, DNA fi ngerprinting (also called DNA profi le analysis or DNA typing) involved the electrophoretic analysis of DNA fragment sizes generated by restriction enzymes. In contrast to more conventional methodologies, such as blood typing, which excludes suspects, traditional DNA fi ngerprinting provides accurate, unambiguous identifi cation of the source of DNA samples.

Variations in DNA sequences between individuals as determined by dif-ferences in restriction enzyme cleavage patterns are known as restriction fragment length polymorphisms (RFLPs). RFLPs are a manifestation of the unique molecular genetic profi le, or “fi ngerprint”, of an individual’s DNA.

RESTRICTION ENZYMES

Bgl I Bactillus globigii

Bam HI Bacillus amyloliquefaciens H

Eco RI Escherichia coli RY13

Eco RII Escherichia coli R 245

Hae III Haemophilus aegyptius

Hind III Haemophilus influenzae R4

Restriction Enzyme Organism

Restriction enzymes are endonucleases that catalyze cleavage of phos-phate bonds. They require Mg+2 for activity and generate a 5 prime (5') phosphate and a 3 prime (3') hydroxyl group at the point of cleav-age. The distinguishing feature of restriction enzymes compared to other endonucleases is that they only cut at very specifi c sequences of bases. Restriction enzymes are produced by many different species of bacteria (including blue-green algae). Over 3,000 restriction enzymes have been discovered and catalogued.

Restriction enzymes are named according to the organism from which they are isolated. The fi rst letter of the genus followed by the fi rst two letters of the species (Fig. 1). Only certain strains or sub-strains of a particular species may produce restriction enzymes. The type of strain or substrain sometimes follows the species designation in the name. Finally, a Roman numeral is used to designate one out of several restriction enzymes produced by the same organism.

A restriction enzyme requires a specifi c double-stranded recognition sequence of nu-cleotide bases to cut DNA. Recognition sites are generally 4 to 8 base pairs in length and cleavage occurs within or near that site. Rec-ognition sites are frequently symmetrical, i.e., both DNA strands in the site have the same base sequence when read 5' to 3' and the cleavage positions are indicated by arrows. Such sequences are called palindromes.


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225DNA Fingerprinting II

Usage of Restriction Enzymes in DNA Fingerprinting Analysis


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Consider the recognition site and cleavage pattern of Eco RI as an ex-ample. Eco RI causes staggered cleavage of its site. The resulting ends of the DNA fragments are called “sticky” or “cohesive” ends.

↓ 5'-GAATTC-3' 5'-G AATTC-3' 3'-CTTAAG-5' 3'-CTTAA G-5' ↑

In DNA forensics laboratories, the two most commonly used restriction enzymes were Hae III and Hinf I, which are 4-base and 5-base cutting enzymes.

Hae III ↓ 5'-GGCC-3' 3'-CCGG-5' ↑

Hinf I ↓ 5'-GANTC-3' 3'-CTNAG-5' ↑

The size of DNA fragments generated depends on distances between the recognition sites. In general, the longer the DNA molecule, the greater the probability that a given recognition site will occur. The DNA of an av-erage human chromosome is very large, containing over 100 million base pairs. A restriction enzyme having a 6-base pair recognition site, such as Eco RI, would be expected to cut human DNA into approximately 750,000 different fragments.

No two individuals have exactly the same pattern of restriction enzyme recognition sites. There are several reasons for this fact that exists in a population. Alleles are alternate forms of a gene that result in alternative expressions of genetic traits that can be dominant or recessive. Chromo-somes occur in matching pairs, one of maternal and the other of paternal origin. The two copies of a gene at a given chromosomal locus represent a composite of parental genes and constitute an individual’s unique genotype. It follows that alleles have differences in their base sequences which consequently creates differences in the distribution and frequen-cies of restriction enzyme recognition sites. Other differences in base sequences between individuals can occur because of mutations and deletions. Such changes can also create or eliminate a restriction endo-nuclease palindromic site. The example in Figure 2 shows how a silent mutation can eliminate a recognition site but leave a protein product unchanged.

DNA Fingerprinting


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Individual variations in the distances between recogni-tion sites in chromo-somal DNA are often caused by interven-ing repetitive base sequences. Rep-etitious sequences constitute a large fraction of the mam-malian genome and have no known genetic function. These sequences can occur between

genes or are adjacent to them. They are also found within introns. Ten to fi fteen percent of mammalian DNA consists of sets of repeated, short sequences of bases that are tandemly arranged in arrays. The length of these arrays (the amount of repeated sets) varies between individuals at different chromosomal loci.

TGTTTA|TGTTTA|TGTTTA|.........variable number

When these arrays are fl anked by recognition sites, the length of the repeat will determine the size of the restriction enzyme fragment gener-ated. Several types of short, repetitive sequences have been cloned and sequenced.

AGAROSE GEL ELECTROPHORESIS

Agarose gel electrophoresis is used to analyze DNA fragments generated by restriction enzymes. Agarose gels consist of microscopic pores that act as a molecular sieve. DNA fragments are loaded into wells made in the gel during casting. Since DNA has a negative charge at neutral pH, it migrates through the gel towards the positive electrode during elec-trophoresis. DNA fragments are separated by the gel according to their size, charge and shape. DNA fragments are linear and the ratio of mass to charge is the same. Therefore, only the size of the fragment affects the mobility. The smaller the fragment the faster it migrates. After electropho-resis, DNA can be visualized by staining.

Restriction enzyme cleavage of relatively small DNA molecules, such as plasmids and viral DNAs, usually results in discrete banding patterns of DNA fragments after electrophoresis. However, cleavage of large and complex DNA, such as human chromosomal DNA, generates many differ-ently sized fragments that the resolving capacity of the gel is exceeded.

Eco RI site

5' ACG AAT TCC 3' Coding DNA

2H N Thr - Asn - Ser COOH Protein

5' ACG AAC TCC 3' Codon changed by mutation

Thr - Asn - Ser COOH Protein

*

2H N

DNA Fingerprinting

Figure 2: Silent mutation (T C) changes the Eco RI site.


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Consequently, the cleaved chromosomal DNA is visualized as a smear after staining and has no obvious banding patterns.

SOUTHERN BLOT ANALYSIS

RFLP analysis of genomic DNA is facilitated by Southern blot analysis. After electrophoresis, DNA fragments in the gel are denatured by soaking in an alkali solu-tion. This causes double-stranded fragments to be converted into single-stranded form (no longer base-paired in a double helix). A replica of the electrophoretic pattern of DNA fragments in the gel is made by transfer-ring (blotting) them to a sheet of nitrocellulose or nylon membrane (Figure 3). This is done by plac-ing the membrane on the gel after electropho-resis and transferring DNA

DNA Fingerprinting

fragments to the membrane by capillary action or electrotransfer. DNA, which is not visible, becomes permanently adsorbed to the membrane, that can then be manipulated easier than gels.

Analysis of the blotted DNA is done by hybridization with a labeled oligo-nucleotide DNA probe. The probe is a DNA fragment that contains base sequences that are complementary to the variable arrays of tandemly repeated sequences found in the human chromosomes. Probes can be labeled with reporter molecules that are used for detection. A solution containing the single-stranded probe is incubated with the membrane containing the blotted, single-stranded (denatured) DNA fragments. Under the proper conditions, the probe will only base pair (hybridize) to those fragments containing the complementary sequences. The mem-brane is then washed to remove excess probe. Only DNA fragments that

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Evidence

Suspect's Blood

1. Collection of DNA2. Extraction of DNA3. DNA cut into fragments by restriction enzymes4. DNA fragments separated by agarose gel electrophoresis5. DNA denatured into single strands6. DNA blotted on a nylon membrane (Southern Blot)7. Nylon membrane soaked with probes that bind to target DNA fragments and detected.8. Computer analysis

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Southern Blot

4

Figure 3: DNA Fingerprinting using RFLP and Southern blot analysis.


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are hybridized to the probe will reveal their positions on the membrane. If the probes are isotopically labeled, the hybridized fragments will appear as discrete bands (fi ngerprint) on the fi lm and are in the same relative po-sitions as they were in the agarose gel after electrophoresis. Only specifi c DNA fragments of the hundreds of thousands of fragments present, will hybridize with the probe because of the selective nature of the hybridiza-tion process.

In forensic analysis, DNA samples can be extracted and purifi ed from specimens of skin, blood stains, semen, or hair roots collected at the crime scene. RFLP analyses performed on these samples is then compared to those performed on samples obtained from the suspect. If RFLP patterns match, it is beyond reasonable doubt that the suspect (or biological ma-terial from the suspect, such as blood) was at the crime scene. In forensic DNA fi ngerprinting, different sets of probes hybridized to different types

DNA Fingerprinting

of repetitious sequences are used in DNA profi le analysis in order to satisfy certain statistical criteria for positive identifi cation.

DNA FINGERPRINTING USING

POLYMERASE CHAIN REACTION (PCR)

RFLP-based DNA fi ngerprinting analysis has been overtaken by the Polymerase Chain Reaction (PCR) because of two important advantages. The fi rst is the sensitivity of PCR, which allows for DNA fi ngerprinting identifi cation using much smaller amounts of DNA since PCR amplifi es DNA. A second advantage is the speed of PCR analysis, which allows critical questions to be answered more quickly as compared to Southern Blot analysis.

PCR amplifi cation requires the use of a thermostable DNA polymerase, such as Taq polymerase. Purifi ed from a bacte-rium known as Thermus Aquaticus that inhabits hot springs, Taq polymerase is commonly used in PCR because it remains stable at near-boiling temperatures. Also included in the PCR reaction are the four deoxynucleotides (dATP, dCTP, dGTP, and dTTP) and two synthetic oligonucleotides, typically 15-30 base pairs in length, known

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Evidence

Suspect's Blood

1. Collection of DNA2. Extraction of DNA3. DNA Amplification (PCR)4. DNA fragments separated by agarose gel electrophoresis5. Analysis

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5'3'

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5'

5'3'3'5'

5'

5'5' 3'

5'3'

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5'3'

5'

5' 3'

5'3'3'5'

5'

5'

5'

5'3'

5' 3'

5' 3'

5' 3'

Figure 4: DNA Fingerprinting using PCR


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3' 5'

3' 5'

5' 3'

5' 3'

5'

5' 3' 3' 5'

5' 3'

5' 5'

Denature 94°C

5'

Extension72°C

3' 5'

Separation of 2 DNA strands

=

Primer 1 =

Primer 2 =

5' 3' 5'

Anneal 2 primers

45°C

3' 5' 5'

5' 5'

3' 5' 5'

5'

5' 3'

5'

5' 5'

5' 3'

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5' 3'

5' 3'

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5' 3'

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5' 3'

Cyc

le 1

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ycle

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le 3

Target Sequence

5' 3'

5' 3'

5' 3'

Figure 5: The Polymerase Chain Reaction

DNA Fingerprinting


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as "primers". These components, together with the DNA to be amplifi ed, are incubated in an appropriate buffer that contains Mg2+. The primers are designed to correspond to the start and end of the DNA to be ampli-fi ed, known as the "target".

The PCR reaction mixture (which contains the DNA polymerase, buffer, deoxynucleotides, primers, and template) is subjected to sequential heat-ing/cooling cycles at three different temperatures (Figure 5).

• In the fi rst step, the template is heated to near boiling (92° - 96°C.) to denature or "melt" the DNA. This step, known as "denaturation" disrupts the hydrogen bonds between the two complimentary DNA strands and causes their separation.

• In the second PCR step, the mixture is cooled to a temperature that is typically in the range of 45° - 65°. In this step, known as "annealing", the primers, present in great excess to the template, bind to the sepa-rated DNA strands.

• In the third PCR step, known as "extension", the temperature is raised to an intermediate value, usually 72°C. At this temperature the Taq polymerase is maximally active and adds nucleotides to the primers to complete the synthesis of the new complimentary strands.

DNA fi ngerprinting analysis has become increasingly signifi cant in court cases involving murder, rape, physical battery, and other types of crimes. Jurors are often asked to determine the validity of DNA evidence, result-ing in both acquittals and convictions of suspected criminals. To ensure greater accuracy, scientists have incorporated standardization proce-dures in DNA analysis. Standard DNA Fragments are used to determine the exact size of individual DNA fragments in a DNA fi ngerprint. It is generally accepted that DNA fi ngerprints are identical only in the case of identical twins.

In this experiment, emphasis is placed on concepts related to RFLP analy-sis. The experiment activities will focus on the identifi cation of DNA by analyzing restriction fragmentation patterns separated by agarose gel electrophoresis.

THIS EXPERIMENT DOES NOT CONTAIN HUMAN DNA.

DNA Fingerprinting


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Experiment Notes


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EXPERIMENT OBJECTIVE:

The objective of this simulated forensic analysis is to develop an under-standing of the use of restriction enzymes as applied to RFLP-based DNA fi ngerprinting.

LABORATORY SAFETY

1. Gloves and goggles should be worn routinely as good laboratory practice.

2. Exercise extreme caution when working with equipment that is used in conjunction with the heating and/or melting of reagents.

3. DO NOT MOUTH PIPET REAGENTS - USE PIPET PUMPS.

4. Exercise caution when using any electrical equipment in the laboratory.

5. Always wash hands thoroughly with soap and water after handling reagents or bio-logical materials in the laboratory.

LABORATORY NOTEBOOK RECORDINGS:

Address and record the following in your laboratory notebook or on a separate worksheet.

Before starting the Experiment:

• Write a hypothesis that refl ects the experiment. • Predict experimental outcomes.

During the Experiment: • Record (draw) your observations, or photograph the results.

Following the Experiment: • Formulate an explanation from the results. • Determine what could be changed in the experiment if the ex-

periment were repeated. • Write a hypothesis that would refl ect this change.

Experiment Overview and General Instructions


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Reaction tube 1

Reaction tube 2

Suspect 1 DNA

25 µl 25 µl

Enzyme 1 Enzyme 2

Add 15 µl to reaction tube 2

Add 15 µl to reaction tube 1 40 µl

45 µl

10 µl

Reaction Buffer

10 µl

40 µl

45 µl

Incubate at37°C for

30 - 60 minutes

Add 5 µlGel Loading

Solution

Samplesare ready for

electrophoresis

Add 10 µl to each reaction

tube

Add 15 µl to both reaction

tubes

Quick Reference:

Dispensed Components Tube Label

Crime scene DNA 1 CS 1Crime scene DNA 2 CS 2Suspect 1 DNA DNA 1Suspect 2 DNA DNA 2Standard DNA fragments MarkersEnzyme Reaction Buffer Rxn Buffer Diluted Enzyme 1 Enzyme 1Diluted Enzyme 2 Enzyme 2

In this experiment, the DNA from two suspects are each digested with two restriction enzymes in sepa-rate reactions and compared to crime scene samples after agarose gel electrophoresis. This fl ow chart outlines the procedure used for the restriction enzyme digestion of DNA obtained from Suspect 1. The DNA from Suspect 2 is digested in the same manner, using reaction tubes 3 and 4 (not shown).

Crime Scene Investigation - Restriction Enzyme Digestion

To avoid cross-contamination, use a FRESH micropipet tip for each transfer of DNA and enzyme to the restriction enzyme reaction.


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Restriction Enzyme Digestion

1. Label microtest tubes 1 through 4 for four restriction enzyme digestion reactions. Put your initials or group number on the tubes.

2. Tap all the tubes (see Quick Reference at left) on the lab bench to

collect all the contents at the bottom of the tube. 3. Use an automatic micropipet to dispense 10 µl of Enzyme Reaction

Buffer (Rxn Buffer) to each of four reaction tubes labeled 1 through 4.

4. Add DNA and enzyme to the reaction tubes as summarized in Chart 1. Use a FRESH micropipet tip for each transfer of DNA and enzyme.

* 10x Gel loading solution has already been added to the crime scene samples.

Chart 1: Summary of Restriction Enzyme Digestion Reactions

Crime Scene Samples

Suspect 1

Suspect 2

Reaction Reaction Enzyme 1 Enzyme 2 Final Tube Buffer DNA 1 (µl) DNA 2 (µl) (µl) (µl) Volume (µl)

OPTIONAL STOPPING POINT

After addition of 10x gel loading solution to stop the reaction, samples are ready for electrophoresis. Samples may be stored in the refrigerator for electrophoresis.

The enzymes used in this experiment are stored and shipped in Dryzyme™ form (lyophilized). A buffer has been added to reconstitute the enzyme to liquid form.

5. Cap the reaction tubes and tap gently to mix. Then tap each tube on the lab bench to collect contents at the bottom.

6. Incubate reaction tubes in a 37°C waterbath for 30 minutes (or 60 minutes if time allows).

After the 30 or 60 minute incubation is completed:

7. Add 5 µl of 10x gel loading solution to reaction tubes 1 - 4 to stop the reactions. Cap and mix by tapping.

Crime Scene DNA, cut with enzyme 1 ready for electrophoresis X -- 45 *

Crime Scene DNA, cut with enzyme 2 ready for electrophoresis -- X 45 *

1 10 15 -- 15 -- 40

2 10 15 -- -- 15 40

3 10 -- 15 15 -- 40

4 10 -- 15 -- 15 40


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AGAROSE GEL REQUIREMENTS FOR THIS EXPERIMENT

• Recommended gel size: 7 x 7 cm or 7 x 14 cm

• Number of sample wells required: 7 - 8 • Well-former template (comb):

For EDVOTEK units: 7 x 14 cm gel - two standard 6-well combs in the fi rst and middle set of notches 7 x 7 cm gel - one 8-well comb in the fi rst set of notches

• Agarose gel concentration: 0.8%

PREPARING THE GEL BED

1. Close off the open ends of a clean and dry gel bed (casting tray) by using rubber dams or tape.

A. Using Rubber dams:

• Place a rubber dam on each end of the bed. Make sure the rubber dam fi ts fi rmly in contact with the sides and bottom of the bed.

B. Taping with labeling or masking tape:

• With 3/4 inch wide tape, extend the tape over the sides and bottom edge of the bed.

• Fold the extended edges of the tape back onto the sides and bottom. Press contact points fi rmly to form a good seal.

2. Placement of well-former template (comb): For EDVOTEK units: 7 x 14 cm gel - two standard 6-well combs in the fi rst and middle set of notches 7 x 7 cm gel - one 8-well comb in

the fi rst set of notches

Electrophoresis - Agarose Gel Preparation


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CASTING THE AGAROSE GEL(S)

3. Use a 250 ml fl ask or beaker to prepare the gel solution.

Amt ofAgarose

(g)

ConcentratedBuffer (50x)

(ml)

Size of Gel(cm)

DistilledWater(ml)

TotalVolume

(ml)

7 x 7

7 x 14

0.23

0.46

0.6

1.2

29.4

58.8

30

60

+ =+

Individual 0.8%* UltraSpec-Agarose™ Gel

DNA Staining with InstaStain® MetBlue

Table

A.1

*0.77% UltraSpec-Agarose™ gel percentage rounded up to 0.8%

Amt ofAgarose

(g)

DilutedBuffer (1x)

(ml)

Size of Gel(cm)

7 x 7

7 x 14

0.23

0.46

30

60

+

Table

A.2 Individual 0.8%* UltraSpec-Agarose™ Gel

DNA Staining with InstaStain® MetBlue

*0.77% UltraSpec-Agarose™ gel percentage rounded up to 0.8%

If preparing the gel with concentrated (50x) buffer, use Table A.1.

IMPORTANT

Check with your instructor regarding the concentration of the buffer you are using to prepare your gel. Use the appropriate table (A.1 or A. 2) below.

If preparing the gel with diluted (1x) buffer, use Table A.2.

4. Swirl the mixture to disperse clumps of agarose powder.

5. With a marking pen, indicate the level of the solution volume on the outside of the fl ask.

Diluted buffer is onevolume of concentrated buffer to every 49 volumes of distilled or deionized water. See Table B.


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6. Heat the mixture to dissolve the agarose powder. The fi nal solution should appear clear (like water) without any undissolved particles.

A. Microwave method:

• Cover the fl ask with plastic wrap to minimize evaporation.

• Heat the mixture on High for 1 minute.

• Swirl the mixture and heat on High in bursts of 25 seconds until all the agarose is completely dissolved.

B. Hot plate method:

• Cover the fl ask with aluminum foil to prevent excess evapora-tion.

• Heat the mixture to boiling over a burner with occasional swirling. Boil until all the agarose is completely dissolved.

Check the solution carefully. If you see "crystal" particles, the agarose is not completely dissolved.


At high altitudes, it is recommended to use a microwave oven to reach boiling temperatures.

7. Cool the agarose solution to 60°C with careful swirling to promote even dissipa-tion of heat. If detectable evapora-tion has occurred, add distilled water to bring the solution up to the original volume marked on the fl ask in step 6.

After the gel is cooled to 60°C:

If you are using rubber dams, go to step 9.

If you are using tape, continue with step 8.

8. Seal the interface of the gel bed and tape to prevent the agarose solution from leaking.

• Use a transfer pipet to deposit a small amount of cooled agarose to both inside ends of the bed.

• Wait approximately 1 minute for the agarose to solidify.

9. Pour the cooled agarose solution into the bed. Make sure the bed is on a level surface.

10. Allow the gel to completely solidify. It will become fi rm and cool to the touch after approximately 20 minutes.

DO NOT POUR BOILING HOT AGAROSE INTO THE GEL BED.

Hot agarose solution may irreversibly warp the bed.

60˚C


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PREPARING THE GEL FOR ELECTROPHORESIS

11. After the gel is completely solidifi ed, carefully and slowly remove the rubber dams or tape from the gel bed.

Be especially careful not to damage or tear the gel wells when remov-ing the rubber dams. A thin plastic knife, spatula or pipet tip can be inserted between the gel and the dams to break possible surface ten-sion.

12. Remove the comb by slowly pull-ing straight up. Do this carefully and evenly to prevent tearing the sample wells.

13. Place the gel (on its bed) into the electrophoresis chamber, properly oriented, centered and level on the platform.

14. Fill the electrophoresis apparatus chamber with the appropriate amount of diluted (1x) electrophoresis buffer.

15. Make sure that the gel is completely submerged under buffer before proceeding to loading the samples and conducting electrophoresis.

For DNA analysis, the recom-mended electrophoresis buf-fer is Tris-acetate-EDTA, pH 7.8. The formula for diluting EDVOTEK (50x) concen-trated buffer is one volume of buffer concentrate to every 49 volumes of distilled or deionized water. Prepare buffer as required for your electrophoresis unit. 50x Conc.

Buffer (ml)Distilled

Water (ml)

6

8

10

20

294

392

490

980

+EDVOTEKModel #

Total Volume Required (ml)

Electrophoresis (Chamber) Buffer

M6+

M12

M36 (blue)

M36 (clear)

300

400

500

1000

Dilution

Table

B

IMPORTANT: Check with your instructor to determine if the buffer has previously been diluted. Pour the appropriate amount of 1x buffer into the electrophoresis chamber according to Table B below.


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LOAD THE SAMPLES

1. Optional Step: Heat the samples, including the Stan-

dard DNA fragments for two minutes at 65°C. Allow the samples to cool for a few minutes.

2. Load 40 µl of each of the DNA samples in the following manner (7 x 14 cm gel):

Electrophoresis - Conducting Electrophoresis

Reminder:

During electrophoresis, the DNA samples migrate through the agarose gel towards the positive electrode. Before loading the samples, make sure the gel is properly oriented in the apparatus chamber.

RUNNING THE GEL

1. After the DNA samples are loaded, carefully snap the cover down onto the electrode termi-nals.

Make sure that the negative and positive color-coded indicators on the cover and apparatus chamber are properly oriented.

2. Insert the plug of the black wire into the black input of the power source (negative input). Insert the plug of the red wire into the red input of the power source (positive input).

First Row Lane Tube

1 Markers Standard DNA Fragments 2 CS 1 DNA from crime scene cut with Enzyme 1 3 CS 2 DNA from crime scene cut with Enzyme 2 4 1 DNA from Suspect 1 cut with Enzyme 1 5 2 DNA from Suspect 1 cut with Enzyme 2

Second Row Lane Tube

1 Markers Standard DNA Fragments 2 3 DNA from Suspect 2 cut with Enzyme 1 3 4 DNA from Suspect 2 cut with Enzyme 2

Electrophoresis

M12

_Black

+RedSample

wells


225EDVO-Kit #



The Exp

erim

ent

Electrophoresis - Conducting Electrophoresis

4. Check to see that current is fl owing properly - you should see bubbles forming on the two platinum electrodes.

5. After the electrophoresis is completed, turn off the power, unplug the power source, disconnect the leads and remove the cover.

6. Remove the gel from the bed for staining.

ABOUT DNA GEL STAINING After electrophoresis, the agarose gels require staining in order to visualize the separated DNA samples. This experiment features a proprietary stain called InstaStain® Methylene Blue. Two options are provided for using the InstaStain® Methylene Blue cards. Check with your instructor regarding which staining method you should use.

Method 1: One-step Staining and Destaining with InstaStain® MetBlue

Method 2: Staining with InstaStain® Methylene Blue

3. Set the power source at the required voltage and conduct electro-phoresis for the length of time determined by your instructor. General guidelines are presented in Table C.

Time and VoltageRecommendations

Minimum / Maximum

Volts

150

125

70

50

15 / 20 min

20 / 30 min

35 / 45 min

50 / 80 min

Table

CEDVOTEK Electrophoresis ModelM6+ M12 & M36

Minimum / Maximum

25 / 35 min

35 / 45 min

60 / 90 min

95 / 130 min


22




EDVO-Kit #Th

e E

xpe

rime

nt

InstaStain™

InstaStain™

Electrophoresis - Staining and Visualization of DNA

METHOD 1: ONE-STEP STAINING AND DESTAINING WITH INSTASTAIN® METHYLENE BLUE

Agarose gels can be stained and destained in one easy step with In-staStain™ Methylene Blue cards. This one-step method can be complet-ed in approximately 3 hours, or can be left overnight.

Wear gloves and safety goggles

Do not stain gel(s) in the electrophoresis apparatus.

One Step Stain and Destain

1. Remove the 7 x 14 cm agarose gel from its bed and completely sub-merse the gel in a small, clean tray containing 150 ml of distilled or de-ionized water, or used electrophore-sis buffer. The agarose gel should be completely covered with liquid.

Examples of small trays include large weigh boats, or small plastic food con-tainers

2. Gently fl oat two 7 x 7 cm cards of InstaStain® MetBlue with the stain side (blue) facing the liquid.

3. Let the gel soak undisturbed in the liquid for approximately 3 hours. The gel can be left in the liquid overnight (cover with plastic wrap to prevent evaporation).

4. After staining and destaining, the gel is ready for visualization and photography.

STORAGE AND DISPOSAL OF INSTASTAIN® METHYLENE BLUE CARDS AND GELS

• Stained gels may be stored in the refrigerator for several weeks. Place the gel in a sealable plastic bag with destaining liquid.

DO NOT FREEZE AGAROSE GELS!

• Used InstaStain® cards and destained gels can be discarded in solid waste disposal.

• Destaining solutions can be disposed down the drain.


225EDVO-Kit #



The Exp

erim

ent

METHOD 2: STAINING WITH INSTASTAIN® METHYLENE BLUE CARDS

1. After electrophoresis, place the agarose gel on a fl at surface covered with plastic wrap.

2. Wearing gloves, place the blue dye side of two InstaStain® Methylene Blue cards on the gel.

3. Firmly run your fi ngers several times over the entire surface of the InstaStain® cards to establish good contact between the InstaStain® cards and the gel.

4. To ensure continuous contact between the gel and the InstaStain® cards, place a gel casting tray and weight, such as a small empty beaker, on top of the InstaStain® cards.

5. Allow the InstaStain® Methylene Blue to sit on the gel for 5 to 10 minutes.

6. After staining, remove the InstaStain® cards.

If the color of the gel appears very light, wet the gel surface with buffer or distilled water and place the InstaStain® cards back on the gel for an additional 5 minutes.

Destaining and Visualization of DNA

7. Transfer the gel to a large weigh boat or small plastic container.

8. Destain with distilled water.*

• Add approximately 150 ml of distilled water to cover the gel.

9. Repeat destaining by changing the distilled water as needed.


Wear gloves and safety goggles

InstaStain is a registered trademark of EDVOTEK, Inc. Patents Pending.

1

2

3

4

5

6

Place gel on a flatsurface covered with plastic wrap.

Place the InstaStain®card on the gel.

Place a small weightfor approx. 5 minutes.

Transfer to a smalltray for destaining.

Destain with 37°Cdistilled water.

Press firmly.

-----

-----

InstaStain™

InstaStain™

InstaStain™

InstaStain™

InstaStain™

InstaStain™


24




EDVO-Kit #Th

e E

xpe

rime

nt


The larger DNA bands will initially be visible as dark blue bands against a lighter blue background. When the gel is completely destained, the larger DNA bands will become sharper and the smaller bands will be visible. With additional destaining, the entire background will become uniformly light blue.

10. Carefully remove the gel from the destain solution and examine the gel on a Visible Light Gel Visualization System. To optimize visibility, use the amber fi lter provided with EDVOTEK equipment.

11. If the gel is too light and bands are diffi cult to see, repeat the staining and destaining procedures.

* Destaining Notes

• Warmed distilled water at 37°C will accelerate destaining. Destaining will take longer with room temperature water.

• DO NOT EXCEED 37°C ! Warmer temperatures will soften the gel and may cause it to break.

• The volume of distilled water for destaining depends upon the size of the tray. Use the smallest tray available that will accommodate the gel. The gel should be completely submerged during destaining.

• Do not exceed 3 changes of water for destaining. Excessive destaining will cause the bands to be very light.

STORAGE AND DISPOSAL OF INSTASTAIN® METHYLENE BLUE CARDS AND GELS

• Stained gels may be stored in the refrigerator for several weeks. Place the gel in a sealable plastic bag with destaining liquid.

DO NOT FREEZE AGAROSE GELS!

• Used InstaStain® cards and destained gels can be discarded in solid waste disposal.

• Destaining solutions can be disposed down the drain.


225EDVO-Kit #



The Exp

erim

ent

Answer the following study questions in your laboratory notebook or on a separate worksheet.

1. Which suspect’s DNA matches that found at the crime scene? Does this automatically mean that the suspect is guilty?

2. What possible experimental problems could occur to invalidate the results?

3. If only Restriction Enzyme 1 was used, would the interpretation be the same?

Study Questions

37

225EDVO-Kit #Material Safety Data Sheets

Full size (8.5 x 11”) pdf copy of MSDS available at www.edvotek.com or by request.

Mat

eria

l Saf

ety

Dat

a Sh

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h O

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If a

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ED

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Mat

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Dat

a Sh

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h O

SHA

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IDEN

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Tele

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Dat

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Sig

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Prep

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Step

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No

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Mat

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Dat

a Sh

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ply

with

OSH

A's

Haz

ard

Com

mun

icat

ion

Stan

dard

. 29

CFR

191

0.12

00 S

tand

ard

mus

t be

con

sulte

d fo

rsp

ecifi

c re

quir

emen

ts.

IDEN

TIT

Y (

As

Use

d on

Lab

el a

nd L

ist)

Not

e: B

lank

spa

ces

are

not

perm

itted

. If

any

item

is n

ot

appl

icab

le, o

r no

info

rmat

ion

is a

vaila

ble,

the

spa

ce m

ust

be m

arke

d to

indi

cate

tha

t.

Sect

ion

IM

anuf

actu

rer'

s N

ame

Sect

ion

II -

Haz

ardo

us In

gred

ient

s/Id

entif

y In

form

atio

n

Emer

genc

y Te

leph

one

Num

ber

Tele

phon

e N

umbe

r fo

r in

form

atio

n

Dat

e Pr

epar

ed

Sign

atur

e of

Pre

pare

r (o

ptio

nal)

Add

ress

(N

umbe

r, St

reet

, City

, Sta

te,

Zip

Cod

e)

EDVO

TEK

, Inc

.

1467

6 R

othg

eb D

rive

Roc

kvill

e, M

D 2

0850

Haz

ardo

us C

ompo

nent

s [S

peci

fic

Che

mic

al Id

entit

y; C

omm

on N

ame(

s)]

O

SHA

PEL

AC

GIH

TLV

Oth

er L

imits

R

ecom

men

ded

% (

Opt

iona

l)

(301

) 25

1-59

90

(301

) 25

1-59

90

Boili

ng P

oint

Sect

ion

III -

Phy

sica

l/Che

mic

al C

hara

cter

istic

s

Unu

sual

Fir

e an

d Ex

plos

ion

Haz

ards

Spec

ial F

ire

Figh

ting

Proc

edur

es

Vapo

r Pr

essu

re (

mm

Hg.

)

Vapo

r D

ensi

ty (

AIR

= 1

)

Solu

bilit

y in

Wat

er

App

eara

nce

and

Odo

r

Sect

ion

IV -

Phy

sica

l/Che

mic

al C

hara

cter

istic

sFl

ash

Poin

t (M

etho

d U

sed)

Extin

guis

hing

Med

ia

Flam

mab

le L

imits

UEL

LEL

Mel

ting

Poin

t

Evap

orat

ion

Rat

e(B

utyl

Ace

tate

= 1

)

Spec

ific

Gra

vity

(H

0 =

1)

2

EDV

OT

EK®

Enzy

me

Rea

ctio

n Bu

ffer

10/1

0/06

Thi

s pr

oduc

t co

ntai

ns n

o ha

zard

ous

mat

eria

ls a

s de

fined

by

the

OSH

A H

azar

dC

omm

unic

atio

n St

anda

rd.

No

data

No

data

No

data

No

data

N/A

No

data

solu

ble

Cle

ar li

quid

, no

odor

, dry

che

mic

al, c

arbo

n di

oxid

e, w

ater

spr

ay o

r fo

am.

No

data

No

data

N

o da

ta

Use

ext

inqu

ishi

ng m

edia

app

ropr

iate

to

surr

ound

ing

fire

Rem

ove

cont

aine

r fr

om fi

re if

pos

sibl

e.

May

pro

duce

tox

ic g

ases

Stab

ility

Sect

ion

V -

Rea

ctiv

ity D

ata U

nsta

ble

Sect

ion

VI -

Hea

lth H

azar

d D

ata

Inco

mpa

tibili

ty

Con

ditio

ns t

o A

void

Rou

te(s

) of

Ent

ry:

Inha

latio

n?In

gest

ion?

Skin

?

Oth

er

Stab

le

Haz

ardo

us

Poly

mer

izat

ion

May

Occ

urC

ondi

tions

to

Avo

id

Will

Not

Occ

ur

Hea

lth H

azar

ds (

Acu

te a

nd C

hron

ic)

Car

cino

geni

city

:N

TP?

OSH

A R

egul

atio

n?IA

RC

Mon

ogra

phs?

Sign

s an

d Sy

mpt

oms

of E

xpos

ure

Med

ical

Con

ditio

ns G

ener

ally

Agg

rava

ted

by E

xpos

ure

Emer

genc

y Fi

rst A

id P

roce

dure

s

Sect

ion

VII

- Pr

ecau

tions

for

Safe

Han

dlin

g an

d U

seSt

eps

to b

e Ta

ken

in c

ase

Mat

eria

l is

Rel

ease

d fo

r Sp

illed

Was

te D

ispo

sal M

etho

d

Prec

autio

ns t

o be

Tak

en in

Han

dlin

g an

d St

orin

g

Oth

er P

reca

utio

ns

Sect

ion

VIII

- C

ontr

ol M

easu

res

Vent

ilatio

nLo

cal E

xhau

stSp

ecia

l

Mec

hani

cal (

Gen

eral

)

Res

pira

tory

Pro

tect

ion

(Spe

cify

Typ

e)

Prot

ectiv

e G

love

s

Oth

er P

rote

ctiv

e C

loth

ing

or E

quip

men

t

Wor

k/H

ygie

nic

Prac

tices

Eye

Prot

ectio

n

Haz

ardo

us D

ecom

posi

tion

or B

ypro

duct

s

Cop

per,

iron

, silv

er s

alts

, hyd

roge

n pe

roxi

de, p

heno

l, pi

cric

aci

dX X

Trea

t sy

mpt

omat

ical

ly a

nd s

uppo

rtiv

ely

Prot

ectio

n to

avo

id s

kin

cont

act

Non

e

Yes

Yes

Ye

sTo

xici

ty h

as n

ot b

een

quan

tifie

d. S

ensi

tivity

rea

ctio

ns (

alle

rgic

)

May

cau

se ir

rita

tion

to s

kin/

eye,

muc

ous

mem

bran

es a

nd u

pper

res

pira

tory

tra

ct.

Res

pira

tory

con

ditio

ns

Mop

up

with

abs

orba

nt m

ater

ial.

Dis

pose

of p

rope

rly.

Mix

with

ver

mic

ulite

and

dry

cau

stic

, wra

p in

pap

er a

nd b

urn

in a

che

mic

al in

cine

rato

r eq

uipp

ed w

ith

afte

rbur

ner

and

scru

bber

. Ig

nite

in p

rese

nce

of s

odiu

m c

arbo

nate

and

sla

ked

lime

(CaO

H)

Wea

r pr

otec

tive

gear

to

avoi

d sk

in/e

ye c

onta

ct

Non

e

Che

mic

al c

artr

idge

res

pira

tor

with

org

anic

vap

or c

artr

idge

.

Yes

N

one

No

Proc

ess

Encl

. Ven

t. Sy

s.

yes

Sp

lash

pro

of g

oggl

es

Do

not

inge

st. A

void

con

tact

with

ski

n, e

yes

and

clot

hing

. Was

h th

orou

ghly

af

ter

hand

ling.

Non

e

Form

alde

hyde

, eth

er, a

lcoh

ol, n

itrog

en o

xide

, str

ong

base

s, ox

idiz

ing

agen

ts.

may

occ

ur b

y sk

in p

enet

ratio

n in

clud

ing

anap

hyla

ctic

sho

ck.

Non

e

No

data

No

data

No

data

Toxi

c ga

ses:

Car

bon

mon

oxid

e, c

arbo

n di

oxid

e, n

itrog

en o

xide

s, ch

lori

ne, h

ydro

gen

chlo

ride

38

225EDVO-Kit # Material Safety Data Sheets

Full size (8.5 x 11”) pdf copy of MSDS available at www.edvotek.com or by request.

Stab

ility

Sect

ion

V -

Rea

ctiv

ity

Dat

aU

nst

able

Sect

ion

VI -

Hea

lth

Haz

ard

Dat

a

Inco

mp

atib

ility

Co

nd

itio

ns

to A

void

Ro

ute

(s)

of

Entr

y:In

hal

atio

n?

Ing

esti

on

?Sk

in?

Oth

er

Stab

le

Haz

ard

ou

s Po

lym

eriz

atio

nM

ay O

ccu

rC

on

dit

ion

s to

Avo

id

Will

No

t O

ccu

r

Hea

lth

Haz

ard

s (A

cute

an

d C

hro

nic

)

Car

cin

og

enic

ity:

NTP

?O

SHA

Reg

ula

tio

n?

IAR

C M

on

og

rap

hs?

Sig

ns

and

Sym

pto

ms

of

Exp

osu

re

Med

ical

Co

nd

itio

ns

Gen

eral

ly A

gg

rava

ted

by

Exp

osu

re

Emer

gen

cy F

irst

Aid

Pro

ced

ure

s

Sect

ion

VII

- Pr

ecau

tio

ns

for

Safe

Han

dlin

g a

nd

Use

Step

s to

be

Take

n in

cas

e M

ater

ial i

s R

elea

sed

fo

r Sp

illed

Was

te D

isp

osa

l Met

ho

d

Prec

auti

on

s to

be

Take

n in

Han

dlin

g a

nd

Sto

rin

g

Oth

er P

reca

uti

on

s

Sect

ion

VIII

- C

on

tro

l Mea

sure

s

Ven

tila

tio

nLo

cal E

xhau

stSp

ecia

l

Mec

han

ical

(G

ener

al)

Res

pir

ato

ry P

rote

ctio

n (

Spec

ify

Typ

e)

Pro

tect

ive

Glo

ves

Oth

er P

rote

ctiv

e C

loth

ing

or

Equ

ipm

ent

Wo

rk/H

ygie

nic

Pra

ctic

es

Eye

Pro

tect

ion

Haz

ard

ou

s D

eco

mp

osi

tio

n o

r B

ypro

du

cts

X X

Trea

t sy

mp

tom

atic

ally

an

d s

up

po

rtiv

ely

Rin

se c

on

tact

ed a

rea

wit

h c

op

iou

s am

ou

nts

of

wat

er.

No

ne

req

uir

ed

No

ne

Yes

Y

es

Y

es

May

cau

se s

kin

or

eye

irri

tati

on

No

ne

rep

ort

ed

Rin

se c

on

tact

ed a

rea

wit

h c

op

iou

s am

ou

nts

of

wat

er.

Ob

serv

e al

l fed

eral

, sta

te, a

nd

loca

l reg

ula

tio

ns.

Avo

id e

ye a

nd

ski

n c

on

tact

.

No

ne

Ch

emic

al c

artr

idg

e re

spir

ato

r w

ith

org

anic

vap

or

cart

rid

ge.

Yes

Yes

Yes

No

ne

yes

Sp

lash

pro

of

go

gg

les

Do

no

t in

ges

t. A

void

co

nta

ct w

ith

ski

n, e

yes

and

clo

thin

g.

Was

h t

ho

rou

gh

ly a

fter

han

dlin

g.

No

ne

No

ne

kno

wn

Sulf

ur

oxi

des

an

d b

rom

ides

Acu

te e

ye c

on

tact

: M

ay c

ause

irri

tati

on

N

o d

ata

avai

lab

le f

or

oth

er r

ou

tes

No

ne

No

dat

a

No

dat

a

N

o d

ata

Mat

eria

l Saf

ety

Dat

a Sh

eet

May

be

use

d t

o c

om

ply

wit

h O

SHA

's H

azar

d C

om

mu

nic

atio

nSt

and

ard

. 29

CFR

191

0.12

00 S

tan

dar

d m

ust

be

con

sult

ed f

or

spec

ific

req

uir

emen

ts.

IDEN

TITY

(A

s U

sed

on

Lab

el a

nd

Lis

t)N

ote

: B

lan

k sp

aces

are

no

t p

erm

itte

d.

If a

ny

item

is n

ot

app

licab

le, o

r n

o in

form

atio

n is

ava

ilab

le, t

he

spac

e m

ust

b

e m

arke

d t

o in

dic

ate

that

.

Sect

ion

IM

anu

fact

ure

r's

Nam

e

Sect

ion

II -

Haz

ard

ou

s In

gre

die

nts

/Id

enti

fy In

form

atio

n

Emer

gen

cy T

elep

ho

ne

Nu

mb

er

Tele

ph

on

e N

um

ber

fo

r in

form

atio

n

Dat

e Pr

epar

ed

Sig

nat

ure

of

Prep

arer

(o

pti

on

al)

Ad

dre

ss (

Nu

mb

er, S

tree

t, C

ity,

Sta

te,

Zip

Co

de)

EDV

OTE

K, I

nc.

1467

6 R

oth

geb

Dri

veR

ock

ville

, MD

208

50

Haz

ard

ou

s C

om

po

nen

ts [

Spec

ific

C

hem

ical

Iden

tity

; C

om

mo

n N

ame(

s)]

O

SHA

PEL

AC

GIH

TLV

Oth

er L

imit

s R

eco

mm

end

ed%

(O

pti

on

al)

(301

) 25

1-59

90

(301

) 25

1-59

90

Bo

ilin

g P

oin

t

Sect

ion

III -

Ph

ysic

al/C

hem

ical

Ch

arac

teri

stic

s

Un

usu

al F

ire

and

Exp

losi

on

Haz

ard

s

Spec

ial F

ire

Fig

hti

ng

Pro

ced

ure

s

Vap

or

Pres

sure

(m

m H

g.)

Vap

or

Den

sity

(A

IR =

1)

Solu

bili

ty in

Wat

er

Ap

pea

ran

ce a

nd

Od

or

Sect

ion

IV -

Ph

ysic

al/C

hem

ical

Ch

arac

teri

stic

sFl

ash

Po

int

(Met

ho

d U

sed

)

Exti

ng

uis

hin

g M

edia

Flam

mab

le L

imit

sU

ELLE

L

Mel

tin

g P

oin

t

Evap

ora

tio

n R

ate

(Bu

tyl A

ceta

te =

1)

Spec

ific

Gra

vity

(H

0 =

1)

2

Gel

load

ing

so

luti

on

co

nce

ntr

ate,

10x

10/1

0/06

This

pro

du

ct c

on

tain

s n

o h

azar

do

us

mat

eria

ls a

s d

efin

ed b

y th

e O

SHA

Haz

ard

Co

mm

un

icat

ion

Sta

nd

ard

.

No

dat

a

No

dat

a

No

dat

a

No

dat

a

N/A

No

dat

a

solu

ble

Blu

e liq

uid

, no

od

or

Un

kno

wn

No

dat

a

No

dat

a

No

dat

a

Dry

ch

emic

al, c

arb

on

dio

xid

e, w

ater

sp

ray

or

foam

Use

ag

ents

su

itab

le f

or

typ

e o

f su

rro

un

din

g f

ire.

Kee

p u

pw

ind

, avo

id

bre

ath

ing

haz

ard

ou

s su

lfu

r o

xid

es a

nd

bro

mid

es.

Wea

r SC

BA

.

ED

VO

TE

K®

Mat

eria

l Saf

ety

Dat

a Sh

eet

May

be

use

d t

o c

om

ply

wit

h O

SHA

's H

azar

d C

om

mu

nic

atio

nSt

and

ard

. 29

CFR

191

0.12

00 S

tan

dar

d m

ust

be

con

sult

ed f

or

spec

ific

req

uir

emen

ts.

IDEN

TITY

(A

s U

sed

on

Lab

el a

nd

Lis

t)N

ote

: B

lan

k sp

aces

are

no

t p

erm

itte

d.

If a

ny

item

is n

ot

app

licab

le, o

r n

o in

form

atio

n is

ava

ilab

le, t

he

spac

e m

ust

b

e m

arke

d t

o in

dic

ate

that

.

Sect

ion

IM

anu

fact

ure

r's

Nam

e

Sect

ion

II -

Haz

ard

ou

s In

gre

die

nts

/Iden

tify

Info

rmat

ion

Emer

gen

cy T

elep

ho

ne

Nu

mb

er

Tele

ph

on

e N

um

ber

fo

r in

form

atio

n

Dat

e Pr

epar

ed

Sig

nat

ure

of

Prep

arer

(o

pti

on

al)

Ad

dre

ss (

Nu

mb

er, S

tree

t, C

ity,

Sta

te,

Zip

Co

de)

EDV

OTE

K, I

nc.

1467

6 R

oth

geb

Dri

veR

ock

ville

, MD

208

50

Haz

ard

ou

s C

om

po

nen

ts [

Spec

ific

C

hem

ical

Iden

tity

; C

om

mo

n N

ame(

s)]

O

SHA

PEL

AC

GIH

TLV

Oth

er L

imit

s R

eco

mm

end

ed%

(O

pti

on

al)

(301

) 25

1-59

90

(301

) 25

1-59

90

Bo

ilin

g P

oin

t

Sect

ion

III -

Ph

ysic

al/C

hem

ical

Ch

arac

teri

stic

s

Un

usu

al F

ire

and

Exp

losi

on

Haz

ard

s

Spec

ial F

ire

Fig

hti

ng

Pro

ced

ure

s

Vap

or

Pres

sure

(m

m H

g.)

Vap

or

Den

sity

(A

IR =

1)

Solu

bili

ty in

Wat

er

Ap

pea

ran

ce a

nd

Od

or

Sect

ion

IV -

Ph

ysic

al/C

hem

ical

Ch

arac

teri

stic

sFl

ash

Po

int

(Met

ho

d U

sed

)

Exti

ng

uis

hin

g M

edia

Flam

mab

le L

imit

sU

ELLE

L

Mel

tin

g P

oin

t

Evap

ora

tio

n R

ate

(Bu

tyl A

ceta

te =

1)

Spec

ific

Gra

vity

(H

0 =

1)

2

ED

VO

TE

K®

Inst

aSta

in®

Met

hyl

ene

Blu

e, M

eth

ylen

e B

lue

Plu

s™

10/0

5/06

Met

hyl

ene

Blu

e

3.7

Bis

(D

imet

hyl

amin

o)

Phen

oth

iazi

n 5

IUM

C

hlo

rid

e

No

dat

a av

aila

ble

CA

S #

61-7

3-4

No

dat

a

No

dat

a

No

dat

a

No

dat

a

No

dat

a

No

dat

a

Solu

ble

- c

old

Ch

emic

al b

ou

nd

to

pap

er, n

o o

do

r

No

dat

a av

aila

ble

No

dat

a

N

o d

ata

Wat

er s

pra

y, c

arb

on

dio

xid

e, d

ry c

hem

ical

po

wd

er, a

lco

ho

l or

po

lym

er f

oam

Self

co

nta

ined

bre

ath

ing

ap

par

atu

s an

d p

rote

ctiv

e cl

oth

ing

to

pre

ven

t co

nta

ct

wit

h s

kin

an

d e

yes

Emit

s to

xid

fu

mes

un

der

fir

e co

nd

itio

ns

Stab

ility

Sect

ion

V -

Rea

ctiv

ity

Dat

aU

nst

able

Sect

ion

VI -

Hea

lth

Haz

ard

Dat

a

Inco

mp

atib

ility

Co

nd

itio

ns

to A

void

Ro

ute

(s)

of

Entr

y:In

hal

atio

n?

Ing

esti

on

?Sk

in?

Oth

er

Stab

le

Haz

ard

ou

s Po

lym

eriz

atio

nM

ay O

ccu

rC

on

dit

ion

s to

Avo

id

Will

No

t O

ccu

r

Hea

lth

Haz

ard

s (A

cute

an

d C

hro

nic

)

Car

cin

og

enic

ity:

NTP

?O

SHA

Reg

ula

tio

n?

IAR

C M

on

og

rap

hs?

Sig

ns

and

Sym

pto

ms

of

Exp

osu

re

Med

ical

Co

nd

itio

ns

Gen

eral

ly A

gg

rava

ted

by

Exp

osu

re

Emer

gen

cy F

irst

Aid

Pro

ced

ure

s

Sect

ion

VII

- Pr

ecau

tio

ns

for

Safe

Han

dlin

g a

nd

Use

Step

s to

be

Take

n in

cas

e M

ater

ial i

s R

elea

sed

fo

r Sp

illed

Was

te D

isp

osa

l Met

ho

d

Prec

auti

on

s to

be

Take

n in

Han

dlin

g a

nd

Sto

rin

g

Oth

er P

reca

uti

on

s

Sect

ion

VIII

- C

on

tro

l Mea

sure

s

Ven

tila

tio

nLo

cal E

xhau

stSp

ecia

l

Mec

han

ical

(G

ener

al)

Res

pir

ato

ry P

rote

ctio

n (

Spec

ify

Typ

e)

Pro

tect

ive

Glo

ves

Oth

er P

rote

ctiv

e C

loth

ing

or

Equ

ipm

ent

Wo

rk/H

ygie

nic

Pra

ctic

es

Eye

Pro

tect

ion

Haz

ard

ou

s D

eco

mp

osi

tio

n o

r B

ypro

du

cts

X

No

ne

Stro

ng

oxi

diz

ing

ag

ents

Toxi

c fu

mes

of

Car

bo

n m

on

oxi

de,

Car

bo

n d

ioxi

de,

n

itro

gen

oxi

des

, su

lfu

r o

xid

es, h

ydro

gen

, ch

lori

de

gas

X

N

on

e

Yes

Y

es

Yes

Skin

: M

ay c

ause

ski

n ir

rita

tio

n

Eyes

: M

ay c

ause

eye

irri

tati

on

In

hal

atio

n:

Cya

no

sis

Mee

ts c

rite

ria

for

pro

po

sed

OSH

A m

edic

al r

eco

rds

rule

PER

EAC

47.

3042

0.82

No

dat

a av

aila

ble

No

dat

a av

aila

ble

Trea

t sy

mp

tom

atic

ally

Ven

tila

te a

rea

and

was

h s

pill

sit

e

Mix

mat

eria

l wit

h a

co

mb

ust

ible

so

lven

t an

d b

urn

in c

hem

ical

inci

ner

ato

r eq

uip

ped

wit

h a

fter

bu

rner

an

d s

cru

bb

er.

Ch

eck

loca

l an

d s

tate

reg

ula

tio

ns.

Kee

p t

igh

tly

clo

sed

. St

ore

in c

oo

l, d

ry p

lace

No

ne

MIO

SH/O

SHA

ap

pro

ved

, SC

BA

Req

uir

ed

Ru

bb

erC

hem

. saf

ety

go

gg

les

Ru

bb

er b

oo

ts

Stab

ility

Sect

ion

V -

Rea

ctiv

ity

Dat

aU

nst

able

Sect

ion

VI -

Hea

lth

Haz

ard

Dat

a

Inco

mp

atib

ility

Co

nd

itio

ns

to A

void

Ro

ute

(s)

of

Entr

y:In

hal

atio

n?

Ing

esti

on

?Sk

in?

Oth

er

Stab

le

Haz

ard

ou

s Po

lym

eriz

atio

nM

ay O

ccu

rC

on

dit

ion

s to

Avo

id

Will

No

t O

ccu

r

Hea

lth

Haz

ard

s (A

cute

an

d C

hro

nic

)

Car

cin

og

enic

ity:

NTP

?O

SHA

Reg

ula

tio

n?

IAR

C M

on

og

rap

hs?

Sig

ns

and

Sym

pto

ms

of

Exp

osu

re

Med

ical

Co

nd

itio

ns

Gen

eral

ly A

gg

rava

ted

by

Exp

osu

re

Emer

gen

cy F

irst

Aid

Pro

ced

ure

s

Sect

ion

VII

- Pr

ecau

tio

ns

for

Safe

Han

dlin

g a

nd

Use

Step

s to

be

Take

n in

cas

e M

ater

ial i

s R

elea

sed

fo

r Sp

illed

Was

te D

isp

osa

l Met

ho

d

Prec

auti

on

s to

be

Take

n in

Han

dlin

g a

nd

Sto

rin

g

Oth

er P

reca

uti

on

s

Sect

ion

VIII

- C

on

tro

l Mea

sure

s

Ven

tila

tio

nLo

cal E

xhau

stSp

ecia

l

Mec

han

ical

(G

ener

al)

Res

pir

ato

ry P

rote

ctio

n (

Spec

ify

Typ

e)

Pro

tect

ive

Glo

ves

Oth

er P

rote

ctiv

e C

loth

ing

or

Equ

ipm

ent

Wo

rk/H

ygie

nic

Pra

ctic

es

Eye

Pro

tect

ion

Haz

ard

ou

s D

eco

mp

osi

tio

n o

r B

ypro

du

cts

X

N

on

e

No

ne

Sulf

ur

oxi

des

, an

d b

rom

ides

X

N

on

e

Yes

Y

es

Yes

Acu

te e

ye c

on

tact

: M

ay c

ause

irri

tati

on

. N

o d

ata

avai

lab

le f

or

oth

er r

ou

tes.

No

dat

a av

aila

ble

May

cau

se s

kin

or

eye

irri

tati

on

No

ne

rep

ort

ed

Trea

t sy

mp

tom

atic

ally

an

d s

up

po

rtiv

ely.

Rin

se c

on

tact

ed a

rea

wit

h c

op

iou

s am

ou

nts

of

wat

er.

Wea

r ey

e an

d s

kin

pro

tect

ion

an

d m

op

sp

ill a

rea.

Rin

se w

ith

wat

er.

Ob

serv

e al

l fed

eral

, sta

te, a

nd

loca

l reg

ula

tio

ns.

Avo

id e

ye a

nd

ski

n c

on

tact

.

No

ne

Yes

No

ne

Yes

No

ne

Yes

Spla

sh p

roo

f g

og

gle

s

No

ne

req

uir

ed

Avo

id e

ye a

nd

ski

n c

on

tact

Mat

eria

l Saf

ety

Dat

a Sh

eet

May

be

use

d t

o c

om

ply

wit

h O

SHA

's H

azar

d C

om

mu

nic

atio

nSt

and

ard

. 29

CFR

191

0.12

00 S

tan

dar

d m

ust

be

con

sult

ed f

or

spec

ific

req

uir

emen

ts.

IDEN

TITY

(A

s U

sed

on

Lab

el a

nd

Lis

t)N

ote

: B

lan

k sp

aces

are

no

t p

erm

itte

d.

If a

ny

item

is n

ot

app

licab

le, o

r n

o in

form

atio

n is

ava

ilab

le, t

he

spac

e m

ust

b

e m

arke

d t

o in

dic

ate

that

.

Sect

ion

IM

anu

fact

ure

r's

Nam

e

Sect

ion

II -

Haz

ard

ou

s In

gre

die

nts

/Id

enti

fy In

form

atio

n

Emer

gen

cy T

elep

ho

ne

Nu

mb

er

Tele

ph

on

e N

um

ber

fo

r in

form

atio

n

Dat

e Pr

epar

ed

Sig

nat

ure

of

Prep

arer

(o

pti

on

al)

Ad

dre

ss (

Nu

mb

er, S

tree

t, C

ity,

Sta

te,

Zip

Co

de)

EDV

OTE

K, I

nc.

1467

6 R

oth

geb

Dri

veR

ock

ville

, MD

208

50

Haz

ard

ou

s C

om

po

nen

ts [

Spec

ific

C

hem

ical

Iden

tity

; C

om

mo

n N

ame(

s)]

O

SHA

PEL

AC

GIH

TLV

Oth

er L

imit

s R

eco

mm

end

ed%

(O

pti

on

al)

(301

) 25

1-59

90

(301

) 25

1-59

90

Bo

ilin

g P

oin

t

Sect

ion

III -

Ph

ysic

al/C

hem

ical

Ch

arac

teri

stic

s

Un

usu

al F

ire

and

Exp

losi

on

Haz

ard

s

Spec

ial F

ire

Fig

hti

ng

Pro

ced

ure

s

Vap

or

Pres

sure

(m

m H

g.)

Vap

or

Den

sity

(A

IR =

1)

Solu

bili

ty in

Wat

er

Ap

pea

ran

ce a

nd

Od

or

Sect

ion

IV -

Ph

ysic

al/C

hem

ical

Ch

arac

teri

stic

sFl

ash

Po

int

(Met

ho

d U

sed

)

Exti

ng

uis

hin

g M

edia

Flam

mab

le L

imit

sU

ELLE

L

Mel

tin

g P

oin

t

Evap

ora

tio

n R

ate

(Bu

tyl A

ceta

te =

1)

Spec

ific

Gra

vity

(H

0 =

1)

2

Prac

tice

Gel

Lo

adin

g S

olu

tio

n

10/0

5/06

This

pro

du

ct c

on

tain

s n

o h

azar

do

us

mat

eria

ls a

s d

efin

ed b

y th

e O

SHA

Haz

ard

Co

mm

un

icat

ion

Stan

dar

d.

No

dat

a

No

dat

a

No

dat

a

No

dat

a

No

dat

a

No

dat

a

Solu

ble

B

lue

liqu

id, n

o o

do

r

No

dat

aN

o d

ata

No

dat

a

Dry

ch

emic

al, c

arb

on

dio

xid

e, w

ater

sp

ray

or

foam

Use

age

nts s

uita

ble

for t

ype

of su

rrou

ndin

g fir

e. K

eep

upw

ind,

avo

idb

reat

hin

g h

azar

do

us

sulf

ur

oxi

des

an

d b

rom

ides

. W

ear

SCB

A.

Un

kno

wn

ED

VO

TE

K®

Documents

DNA Fingerprinting II - Austin Community College District · DNA Fingerprinting II Usage of Restriction Enzymes in DNA Fingerprinting Analysis EVT 002127K 3 EDVOTEK - The Biotechnology