cytoskeleton

Shreya M. ModiMSc –I[Microbiology]

H.N.G.UDept. of Life Science

INDEX

Introduction Types of cytoskeleton (i) Intermediate filament (ii) Microtubules (iii) Microfilaments Comparision Conclusion References

Introduction

• The cytoskeleton is a network of fibers extending throughout the cytoplasm.

The cytoskeleton organizes the structures and activities of the cell.

Cells need a (cyto)skeleton to:•create shape•change shape•allow movement

Types of Cytoskeleton

Composition of the cytoskeleton

• actin filaments (6-10 nm)• microtubules (25 nm) & associated proteins• intermediate filaments (11 nm) & molecular

motors • nano filaments (2-6 nm)

Motility and trafficking

actin filaments myosins

microtubules kinesinsdyneins

Intermediate Filaments

Molecular motors

Microtubules Actin filaments Microtubules

nano filaments

?

?intermediatefilaments

Function of cytoskeleton

• stabilization• intracellular transport• signal transduction