microtubules Flashcards

1
Q

structure

A

13 protofilaments +/- avec v de poly diff

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2
Q

protofilaments structure

A

hétérodimères tubuline alpha et beta
tubuline lié à GTP

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3
Q

beta

A

hydrolyse GTP après assemblage

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4
Q

polymérisation

A

fav +

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5
Q

MTOC

A

centre organisateur des microtubules

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6
Q

MTOC structure

A

liés avec y tubuline à toutes ext. -

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7
Q

dépoly

A

ext. + si microtubule arrête de croitre + hydrolyser tous GTP

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8
Q

taxol

A

empêche dépoly

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9
Q

rôles

A

mitose
cils et flagelle

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10
Q

cils et flagelle

A

microtubules arrangés = axonème = 9 doublets MT autour 2 MT centraux

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