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Composición de los ácidos nucleicos: DNA, RNA
RNA
Citosina
Uraci lo
Adenina
Guanina
DNA
Citosina
Timina
Adenina
Guanina
Nomenclatura para los nucleótidosNucleótidos de DNA
Nucleótidos de RNA
Nucleótido de adenina
dAMP AMP
Nucleótido de guanina
dGMP GMP
Nucleótido de citosina
dCMP CMP
Nucleótido de timina
dTMP ---
Nucleótido de Uracilo
--- UMP
Nomenclatura para los nucleótidosNucleótidos trifosfatados de DNA
Nucleótidos trfosfatados de RNA
Nucleótido trifosfatado de adenina
dATP ATP
Nucleótido trifosfatado de guanina
dGTP GTP
Nucleótido trifosfatado de citosina
dCTP CTP
Nucleótido trifosfatado de timina ( uracilo)
dTTP UTP ( por uracilo)
Promotor a 20-200 pb del codón inicial con secuencia
TATATA o CGCGCGSecuencia de terminación
Estructura del GEN
Two views of a model of the 30-nm solenoid showing histone octamers as purple disks. (Left) Partly unwound lateral view. (Right) End view. The additional histone H1 is shown running down the center of the coil, probably acting as a stabilizer. With increasing salt concentrations, the nucleosomes close up to form a solenoid with six nucleosomes per turn.
Model for chromosome structure. On the left is shown tight coiling, representing metaphase: here the loops are so densely packed that only their tips are visible. At the free ends, a solenoid is shown uncoiled to give an approximation of relative scale. On the right is shown a relaxed supercoil, as at interphase.