KD cytoskeleton
Terms
undefined, object
copy deck
- Structure: Hollow tubes, wall consisting of 13 columns of tubulin molecules
- Microtubules
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Diameter
25 nm with 15 nm lumen - Microtubules
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Also known as
Tubulin Polymers - Microtubules
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Protein Subunits:
Tubulin - Microtubules
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Function
Maintenance of cell shape (compression-resisting) - microtubules
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Function
cell motility (cilia, flagella) - Microtubules
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Function
Chromosome movements in cell division - Microtubules
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function
organelle movements - Microtubules
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Also known as
Actin filaments - microfilaments
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structure
two intertwined strans of actin, each a polymer of actin subunits - microfilaments
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diameter
7 nm - microfilaments
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protein subunits
actin - mirofilaments
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function
maintenance of cell shape (tension bearing) - microfilaments
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function
changes in cell shape - microfilaments
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Function
Muscle contraction - Microfilaments
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Function
Cytoplasmic Streaming - Microfilaments
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Function
Cell motility (pseudopodia) - Microfilaments
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Function
Cell division (Cleavage furrow formation) - Microfilaments
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Structure
Fibrous proteins supercoiled into thicker cables - Intermediate Filaments
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Diameter
8-12 nm - Intermediate Filaments
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Protein Subunits
Keratin Family, depends - Intermediate Filaments
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Function
Maintenance of cell shape (tension-bearing elements - Intermediate filaments (though also microfilaments)
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function
Anchorage of nucleus and certain other organelles - Intermediate Filaments
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Function
Formation of nuclear lamina - Intermediate Filaments