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5 Cards in this Set
- Front
- Back
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Functions of the cytoskeleton
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-movement of organelles
-shape -motility |
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Filiments of cytoskeleton & nucleus
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-intermediate
-microtubules -microfiliments |
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Intermediate filiments
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-mechanical strength
-used to find tissues of origin i.e. mets keratins:epi desmin:muscle neurofiliments:neurons vinmentin:fibroblasts,chondroblasts lamins:nuclear lamina |
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Microtubules
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-position of organelles/direct intracellular transport
-GTP binds to + end of alpha & beta tubulin dimer shrinks & lenghtens -assoc. w/ kinesin (long)moves stuff to + end & dynein(short) - end =>movement - in mtoc i.e. cillia w/ basal bodies 9+2 arrangement |
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Microfiliments
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- aka F actin
-made of G actin binds to ATP= shortening -@ PM -has 2 actin crosslinking prot.:alpha actinin,fimbrin -has 2 actin binding prot.: spectrin,myosin |
