1. cytoskeleton
Shreya M. Modi
MSc –I[Microbiology]
H.N.G.U
Dept. of Life Science

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

3. 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

4. Types of Cytoskeleton

5. 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)

6. Motility and trafficking
actin filaments
myosins
microtubules
kinesins
dyneins

7. Intermediate Filaments

8. Molecular motors
nano filaments
?
intermediate
filaments
Microtubules Actin filaments Microtubules
?

10. Function of cytoskeleton
• stabilization
• intracellular transport
• signal transduction