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Bio Mol > TranscripciĆ³n > Flashcards

TranscripciĆ³n Flashcards

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Biology 101 flashcards
1
Q

Copia una determinada secuencia de DNA

A

mRNA

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2
Q

Forma ribosomas

A

rRNA

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3
Q

Se adaptan a aminoƔcidos y las colocan en el ribosoma para formar proteƭnas

A

tRNA

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4
Q

Secuencias codificantes

A

Intrones: No son traducidos
Exones: Codifican el producto

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5
Q

Secuencias reguladoras

A

Promotores: Regulan la expresiĆ³n
Potenciadores: Expresan el gen
Silenciadores: Inhiben el gen

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6
Q

tipos ARN polimerasa

A

ARN pol I (TF I): 45S se rompe en 18S, 5.8S y 28S
ARN pol II (TF II): Sintetiza molƩculas de mRNA y miRNA
ARN pol III (TF III): Sintesis de tRNA y rRNA 5S

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7
Q

IniciaciĆ³n: TFIID

A

UniĆ³n de la proteĆ­na a la caja TATA

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8
Q

IniciaciĆ³n: TFIIA

A

Estabiliza la uniĆ³n del tata binding protein y del TFIID (UniĆ³n TBP) y permite que el TFIID encuentre el extremo 5ā€™

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9
Q

IniciaciĆ³n: TFIIB

A

Se une al TBP, proporciona mejor anclaje a la RNA polimerasa II

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10
Q

IniciaciĆ³n: TFIIF

A

marca al RNA polimerasa II y se une al TBP

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11
Q

IniciaciĆ³n: TFIIH

A

Empieza a fosforilar al RNA polimerasa II y desenrolla

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12
Q

IniciaciĆ³n: TFIIE

A

Regula la funciĆ³n de TFIIH

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13
Q

IniciaciĆ³n: QuĆ© permite el mediador

A

Permite que las proteĆ­nas activadoras se comuniquen con la RNA pol y el TF.
Ve si hay un potenciador o un silenciador, un activador o represor recibe la info y la lleva al RNA pol

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14
Q

ElongaciĆ³n: TEFb

A

Fosforila al RNA pol y se activa

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15
Q

ElongaciĆ³n: TFIIS

A

Ancla al RNA pol

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16
Q

ElongaciĆ³n: hSPt4.5

A

mantiene a todos unidos.

Sale la hebra de mRNA y se le une la caperuza

17
Q

ElongaciĆ³n: CPSF

A

Detecta que el mRNA llega a mucha adeninas

18
Q

ElongaciĆ³n: CtsF

A

Corta el mRNA t y sale

19
Q

ElongaciĆ³n: Poli A polimerasa

A

Pone 200 nucleĆ³tidos de adenina

20
Q

TerminaciĆ³n:

A
  • ## Se adiciona el CAP al RNA transcrito

Bio Mol (17 decks)

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