Arn

  • November 2019
  • PDF

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ARN POLIMERASAS EUCARIOTICAS Y FACTORES DE TRANSCRIPCION

ARN POLIMERASA II (ARNm)

ARN POLIMERASA I (ARNr)

ARN POLIMERASA III

REGULACION DE LA TRANSCRIPCION EN EUCARIOTAS ESTIMULADORES ACTIVADORES BLOQUEADORES

ESTIMULADORES

SIN UN ESTIMULADOR EL GEN SE TRANSCRIBE A UN NIVEL BASAL BAJO

ACTIVADORES

DOMINIO DE UNION AL ADN (ANCLA) DOMINIO CON LA MAQUINARIA TRANSCRIPCIONAL (ACTIVA)

REPRESORES

POSEEN SOLO DOMINIO DE UNION AL ADN (GENERALMENTE)

MADURACION DEL ARN

ARN RIBOSOMICO

ARN TRANSFERENCIA

ARN MENSAJERO

“SOLO EN EUCARIOTAS”

CORTE Y EMPALME O SPLICING

ENSAMBLAJE DEL ESPLICEOSOMA

AUTOEMPALME O SELF-SPLICING

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