BIO 1140 Lecture Notes - Bacteriostatic Agent, Kasserine, Covalent Bond
5 Sep 2013
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Document Summary
Structural support: cytoskeleton allows cell to take on different shapes (1) also important in allowing things around within the cell (molecule, vesicles, organelles) by movinf things around it becomes important in organizing the contents within the cell. (2)=intracellular transport. Without the cytoskeleton your cuts would never heal because they rely on cell movements. Muscle cells would be useless without one (4) the positioning of organelles within the cell. Hollow tube like structure. (avg 25nm size), found in cytoplasm, very dynamic and constantly changing shape, and also in cylia and flagella (where very stable) Important are alpha and beta tubulins (slightly different proteins) they form a hetero dimer. 2-units, each is different. they are the building blocks. Positive end has beta tubulin exposed, and at minus end an alpha tubulin is exposed. 13 protofilaments in a circle give you a microtubule.
