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Proton pump

proton pump

integral membrane proteins that transport protons across a membrane against a concentration gradient. This transport is driven by hydrolysis of aTP by hydrogen-transporting ATP synthase.


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ETC - purpose of having different dehydrogenases?

... between the two is the fact that NDH-1 is a coupling site (so pumps out protons while transferring electrons) while NDH-2 is not; will not pump out any protons. As ...

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by keetner
Sat Dec 15, 2012 2:28 am
 
Forum: Molecular Biology
Topic: ETC - purpose of having different dehydrogenases?
Replies: 1
Views: 2419

Hydrochloric acid (HCL) in the stomach..

... mamalian stomach secrete HCL at a concentration of 0.1M. The secreted -protons, which are derived from the intracellular hydration of CO2 by carbonic anhydrase, are pumped out by an (H+ k+) ATPase antiport transporter is also required to complete the overall ...

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by TwinkleK
Fri Feb 10, 2012 12:58 pm
 
Forum: Molecular Biology
Topic: Hydrochloric acid (HCL) in the stomach..
Replies: 9
Views: 4546

Re: Free hydrogen in humans

... http://en.wikipedia.org/wiki/Chemiosmosis The ATPase is basically a proton pump running in reverse.

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by jonmoulton
Fri Jun 10, 2011 3:37 pm
 
Forum: Molecular Biology
Topic: Free hydrogen in humans
Replies: 8
Views: 4457

Proton gradients (chemiosmosis)

-flagellar movement in bacteria -search for proton pump in google scholar, tons of examples

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by canalon
Fri Oct 22, 2010 2:34 am
 
Forum: Cell Biology
Topic: Proton gradients (chemiosmosis)
Replies: 1
Views: 1802

aerobic and anaerobic glucose degeneration in a cell

... use of the reduced state of these molecules to fuel the production of a proton gradient. During this process NADH and FADH2 donate electrons to ETC Complex 1 and 2. Complex 1 uses the electrons to pump hydrogen ions (protons) across the cristae membrane creating a proton gradient. ...

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by Jesse2504
Tue Jun 23, 2009 3:43 am
 
Forum: Cell Biology
Topic: aerobic and anaerobic glucose degeneration in a cell
Replies: 2
Views: 15986
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