Term
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Definition
| actin cross-linking protein. It is short and rigid for bundles like microvillus |
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Term
| What are α-actinin, filamin and spectrin? |
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Definition
They are actin cross-linking proteins..
α-actinin - contractile bundles; loose packing
spectrin - connects actin filaments to form actin-spectrin cytoskeleton network
filamin - flexible; gives properties of gel |
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Term
| What is myosin II? What are the cellular involvements of myosin II? |
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Definition
- is an actin-binding motor protein consisting of 2 heacy chains and 4 light chains
- it's involved in muscle contraction, contractile ring during mitosis, stress bivers in fibroblast cells, adhesion belt in epithelial cells. |
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Term
| What are the functions of Myosin I and V? |
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Definition
myosin I - move vesicles around the cell and attach to plasma membrane; links PM to actin bundles in microvilli
myosin V - vesicular transport of secretory vesicles |
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