Transcripción Flashcards

1
Q

Secuencias de regulación cis

A

Promotor: indica donde iniciar
Potenciador: aumenta
Silenciadores: lo hace lento

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2
Q

Intrones

A

no traducen

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3
Q

Exones

A

Codificantes

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4
Q

Secuencias de regulación trans

A

Activador
Represor

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5
Q

Donde se unen los factores de regulación trans

A

A los TF

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6
Q

RNA pol II que hace?

A

mRNA

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7
Q

RNA pol I que hace?

A

rRNA

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8
Q

RNA pol III que hace?

A

tRNA

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9
Q

Complejo de iniciación para transcripción

A

TFIID-TBP se une a caja TATA
TFIIA (permite que TFIID reconozca 5’
TFIIB (ancla RNA pol II al inicio)
TFIIF (fija RNA pol II)
TFIIE (regula TFIIF)
TFIIH (helicasa, desenrolla doble helice y fosforila RNA pol II)

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10
Q

Punto donde se inicia la transcripción

A

Caja TATA

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11
Q

Factores de elongación

A

TFIIS (elonguina)
hSPT4,5une RNA II al DNA)
PTEFb (fosforila RNA pol II)

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12
Q

Factores de terminación de transcripción

A

CstF (corte)
CPSF (termina en AAUAAAA)
Adición de CAP

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13
Q

Quién pone la cola de poli A?

A

poli A polimerasa

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14
Q

Quién pone la caperuza?

A

Guanil transferasa

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15
Q

Donde se encuentra la caperuza y la cola de poli A?

A

Caperuza: 5’
Cola de poli A: 3’

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