filaments intermédiaires Flashcards

1
Q

structure

A

tétramères aux extrémités identiques (non pol)

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2
Q

stabilité

A

++ stable car liens sur longueur et côtés de tétramère

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3
Q

types FI

A
  1. lamines nucléaires
  2. neurofilaments
  3. vimentines
  4. kératines
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4
Q

lamines nucléaires

A

noyau

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5
Q

neurofilaments

A

axone

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6
Q

vimentines

A

tissu conjonctif
adipocytes

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7
Q

kératines

A

cellules épithéliales

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8
Q

FI nucléaires où

A

eucaryotes

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9
Q

FI cytoplasmiques

A

cellules animales

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10
Q

ancrage filaments

A

lie cadhérines = desmosomes (formation)
intégrines = hémidesmosomes (stabilise avec conjonctif)

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11
Q

lamines nucléaires rôle

A

régule réplication ADN
cycle cellulaire
organisation chromatine

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