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Glossary of KD cytoskeleton

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Created by kdillane

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

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