Monday, September 5, 2011

Cytoskeleton

There are three different types of filaments in the cytoskeleton.
1. Microfilaments: this is a system of filaments that are responsible for anchoring plasma membrane proteins, cell movement, and cell division.

  • usually found in the periphery of the cell, where they assist in anchoring plasma membrane proteins
  • also can be found in bundles where they also act somewhat like muscles

2. Microtubules: positioned near the nucleus, they serve as 'tracks' for organelles such as mitochondria and vesicles ready for excretion

  • very dynamic and important for mitosis where they segregate the choromosomes

3. Intermediate filaments: link the cell surface and the nucleus, and stabilize structural integrity

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