ribosomas Flashcards

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1
Q

composición de los ribosomas

A

estructuras basófilas compuestas por ARN y proteínas
- dos subunidades (mayor y menor)

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2
Q

unidad S (Sredberg)

A

medida del coeficiente de sedimentación en ultracentrifugación

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3
Q

traducción

A

lectura y traducción del ARNm que reconoce los codones del ARNm por los anticodones del ARNt

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4
Q

codon

A

secuencia de 3 bases nitrogenadas que indica el aminoácido

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5
Q

total de tripletes

A

64

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6
Q

AUG

A

metonina
codon inicial

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7
Q

ARNt

A

ARN de 4s
portan aminoácidos

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8
Q

polirribosoma

A

asociación de ribosomas en el ARNm para la síntesis de proteínas

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9
Q

sitio A

A

aminoacil

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10
Q

Sitio P

A

péptido

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11
Q

Sitio E

A

exit

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12
Q

codones de paro

A

UAG
UAA
UGA

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13
Q

proteínas libres

A

ribosomas libres

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14
Q

proteínas perifericas de la membrana

A

ribosomas libres

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15
Q

proteínas constituyenetes del citoesqueleto

A

ribosomas libres

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16
Q

proteínas de organulos que no son del sistema endomembranoso

A

ribosomas libres

17
Q

proteínas del núcleo

A

ribosomas libres

18
Q

proteínas glicosiladas

A

ribosomas del RER

19
Q

proteínas de organulos del sistema endomebranoso

A

ribosomas del RER

20
Q

proteínas transmembranales

A

ribosomas del RER

21
Q

proteínas para la secreción

A

ribosomas del RER

22
Q

subunidad mayor

A

5.8s, 28s y 5s nuclear
49 proteínas
60s

23
Q

subunidad menor

A

18s
33 proteínas
40s

24
Q

s del ARNr y en que subunidades se divide

A

45s
18s, 5.8s, 28s