atp synthase question

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goteamramrod
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atp synthase question

Post by goteamramrod » Mon Nov 16, 2009 3:54 am

will h+ ions still pass through atp synthase if there's no Pi present, or does the enzyme need the presence of h+, adp and Pi to function?

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JackBean
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Post by JackBean » Mon Nov 16, 2009 4:49 am

In my opinion, they will flow through anyway. But I'm not sure about that
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zami'87.
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Re: atp synthase question

Post by zami'87. » Mon Nov 16, 2009 6:23 am

Flow of H+ depends on it's electrochemical gradient..pH between inner and outer membrane should be more acidic than in mitochondrial matrix in order for H+ flow into matrix.
On the other hand ATP synthesis depends on concentrations of ATP,ADP and Pi...
...so H+ should pass into matrix.
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JackBean
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Post by JackBean » Mon Nov 16, 2009 6:32 am

the direction of H+ gradient actually doesn't matter ;)
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zami'87.
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Post by zami'87. » Mon Nov 16, 2009 8:43 am

It doesn't..you're right..but it's easier(at least for me)to use an example.
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jwalin
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Post by jwalin » Mon Nov 16, 2009 8:47 am

but the only thing that will not happen is atp synthesis
the alpha molecule will still be rotating but atp won't be formed
it isn't what you do that matters but it is how you do it

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JackBean
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Post by JackBean » Mon Nov 16, 2009 9:11 am

of course. If you don't have parts, you can build house ;)
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