Overview of Cell Biology/Evolution of the Cytoskeleton
Readings[edit | edit source]
- Study guide:
- Wikipedia article: The Cytoskeleton
The Cytoskeleton[edit | edit source]
The Cytoskeleton consists of several different systems called filamentous polymers:
Critical concentration (Cc): If concentration of monomer < Cc, no polymerization occurs. If concentration of monomer > Cc, polymerization occurs.
Some cytoskeletal polymers are polar and have structural directionality. Due to this directionality, proteins can be transported along the polymer.
Mutants[edit | edit source]
FtsZ(-) mutants fail to undergo cytokinesis or cell division at restrictive temperatures
MreB(-) mutants of normally rod shaped bacteria assume a spherical shape
CreS(-) mutants of normally crescent shaped bacteria assume a rod shape
ParM(-) mutants fail to segregate plasmids between daughter cells