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| What is a contractile protein? |
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Definition
| Proteins that generate force during muscle contractions |
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Term
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Definition
| A contractile protein-- makes up thick filament-- |
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| what does myosin consist of ?? |
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Definition
| tail, 2 myosin heads--bind at myosin binding sites on actin molecules of thin filament during contraction |
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Definition
| A contractile protein--main component of thin filament--ea actin mol is a myosin-binding site where a myosin head of thick fil binds during a contraction |
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Definition
| proteins that help to switch the muscle contraction on and off |
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Definition
| a regulatory protein-- a component of thin filament--tropomyosin covers the myosin-binding site on actin molecules when a skeletal muscle is relaxed--preventing myosin from binding to actin |
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Definition
| regulatory protein--that is a compon. of thin fila-- Ca ions bind to troponin it undergoes a change in shape.... muscle contraction subsequently begins as myosing binds to actin |
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Definition
| proteins that keep the thick/thin filaments of the myobibrils in proper alignment--give myofibrils elasticity and exxtensibility--links the myofibrils to the sarcolemma and extracellular matrix |
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Definition
| structural protein connects a z eis to the m line of the sarcomere, helping to stabilize the position of the theick filament. -- accounts for much of the elasticityand extensibility of myofibrils |
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Definition
| structural protein of the A discs that attahes to the actin mol of thin filaments and to the titin molecules |
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Definition
| structural protein that forms the M line of th asarcomere, binds to the titin mol and connects adjacent thick filaments to one another |
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Definition
| structural protein that wraps around the entire length of each thin filament; it helps anchor the thin fil to the Z disc and regulates the length of the thin fila during development |
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Definition
| structural protein that links the thin filaments of the sarcomere to integral membrane proteins in the sarcolemma, which are attached in turn to proteins in the connective tissue matrix that surrounds muscle fibers. |
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