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behii208456
Joined: 14 Sep 2009
Posts: 8
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 Posted: Tue Sep 22, 2009 4:56 pm Post subject: troponin/ ca relationship |
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the release of ca is directly related to the action potential arriving at the T tubules. Troponin plays no part in the release! upon binding to ca it removes its inhibition!
so why does the answer state that the release of ca is in any way affected by the lack of troponin? |
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calena7178147
Joined: 26 Jan 2010
Posts: 43
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| Posted: Mon Feb 15, 2010 11:21 am Post subject: |
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Calcium is release, then binds to troponin; A, B, and C happen after this. So, if troponin were absent, there would be nothing for the calcium to bind to, and A, B, and C would be inhibited. Remember the question asks which of the following would NOT be inhibited
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calena7178147
Joined: 26 Jan 2010
Posts: 43
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| Posted: Mon Feb 15, 2010 11:26 am Post subject: |
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| If there were no troponin, steps 2-5 would be inhibited. The release of calcium would not be inhibited. Remember, the question asks which step would NOT be inhibited. |
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JCastell2821
Joined: 13 Apr 2011
Posts: 1
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| Posted: Tue Jun 14, 2011 7:23 pm Post subject: |
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| but the purpose of calcium binding to troponin is to uncover the active sites, so if there's no troponin, then the active sites will always be uncovered and thus actin will bind right? |
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