Upload
allyson-gardner
View
219
Download
4
Embed Size (px)
Citation preview
Visualizing AngiogenesisA CREST Initiative
Elise A. Pellmann – Marquette UniversityDaniel Sem, Ph.D. – Concordia University WisconsinDavid Goodsell, Ph.D. – Scripps Research Institute
1. Cellular landscape
• 2 x 107 magnification
• Show:
• MAPK and receptor tyrosine kinase signaling
• VEGF, plurality of biochemical cascades
• angiogenesis
• cell permeability
Knowledge needed for landscape
• pathway: which proteins?
• size, domain arrangement/shape, assembly, modifications, interactions/function
DUSP-5
• ERK-2 phosphatase: P-T183, P-Y185
• C-terminal phosphatase domain
• N-terminal ERK-binding domain
• linker region
• Ser to Pro mutation (hemangiomas)
DUSP-5 model
C
N
catalytic domain
ERK-binding domain
++
––
•C: PDB 2G6Z
•N: Homology model, NMR
•Linker: hand-drawn
•Domain orientation: good guess?
DUSP-5 model
C
N
catalytic domain
ERK-binding domain
++
––
1.ERK binding
2.catalytic domain “clamps” down
3.phosphates removed from ERK
Drug impedes catalytic action, may also prevent ERK binding if DUSP-5 clamps down on drug