BSCI 207 Lecture Notes - Lecture 33: Tubulin, Motility, Motor Protein
28 Nov 2016
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Force is typically applied to a stationary object: can be applied on the: There are three kinds of filaments: microfilaments. Forms part of the cytoskeleton and is important in cell division (it divides the cell) Forms the structure and shape of the cell. Will not be talking about this filament much: microtubules. Tubulin consists of alpha and beta tubulins that creates a tube shape. Maintains cell shape and moves chromosomes and organelles: the centrioles are made of tubulin. Example of transport in squid axons: neurons need to get proteins where they are needed in a cell, microtubules forms a highway . Transport vesicles are walked by motor proteins along the tubulin highway. This movement of transport vesicles is disrupted when the tubulin highway is severed as a result of injury: motor proteins move the transport vesicles along. They are comprised of a tail, stalk, and head. Head units move the protein by hydrolyzing.
