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Notes de cours Biologie cellulaire (BIO301) : Le cytosquelette

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Prise de notes de l'UE BIO 301 : UGA DLST niveau L2 Cours sur le cytosquelette et sur les différents constituants de ce dernier

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Uploaded on
July 8, 2024
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Written in
2023/2024
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Adrien antkowiak
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Bio 301 – Biologie cellulaire 2
Le cytosquelette


Résumé
Présentation générale des différents éléments du cytosquelette et de leurs rôles au sein de la
cellule
Prise de notes de l’UE BIO 301 : UGA DLST niveau L2




LILIAN MOREAUX

, Table des matières
1) Introduction.......................................................................................................................... 2
2) Cartes d’identité des cytosquelettes ................................................................................ 2
A) Les microfilaments d’actine ........................................................................................... 2
B) Les microtubules ............................................................................................................. 3
C) Les filaments intermédiaires ......................................................................................... 3
3) Organisation des cytosquelettes dans les cellules .......................................................... 5
A) Maintien d’une organisation cellulaire stable............................................................. 5
B) Division cellulaire ............................................................................................................ 6
C) Migration cellulaire ......................................................................................................... 7
4) Les filaments intermédiaires .............................................................................................. 8
5) Points communs : actine et microtubule ......................................................................... 9
A) Paramètres cinétiques .................................................................................................... 9
B) Nucléation ........................................................................................................................ 9
C) Concentration critique..................................................................................................10
D) Dynamique de polymérisation ....................................................................................10
E) Extrémités des filaments ..............................................................................................11




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