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Proton Motive Force

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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Proton Motive Force

Postby Dawn » Thu Nov 03, 2005 8:37 pm

I need information about proton motive force in bacteria.How can asidophilic or alkalophililc bacteria produce pmf in different pH conditions :?:
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Postby Fried Zygote Sandwich » Fri Nov 04, 2005 3:21 am

Okay I'm not very sure about PMF at all. But from what I gather it's the sum of the pH change and electrical potential difference over a membrane.

Just by analysis I'm going to say acidophillic bacteria will produce PMF in a low pH (acidic) whereas alkaliphillic probably produce PMF in a high pH?

Maybe you're looking for something different. Wish I could help more.
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Postby thecow135 » Fri Nov 04, 2005 4:04 am

that guy has it rite
CUZ EVERYBODY NOE THAT THE GAME DONT STOP TRY TO MAKE IT TO THE TOP
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Postby Dawn » Fri Nov 04, 2005 8:19 am

I mean mechanism of pmf
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Postby Juanu » Mon Nov 07, 2005 1:21 pm

Hi!,

I decided to add my little grain of salt in here, hopefully it will help you.

I am not sure what you need to know of the mechanism of PMF. In the case of acidophilic microorganism, where there is a high concentration of proton on the outside, there is a flux of proton to the inside of the microorganism, force that is used for the synthesis of ATP. In some organism (like the one that I study..jeje), they use the electrons obtained from the oxidation of mineral compounds to generate the necessary energy to eliminate the proton from the inside (cytoplasm), in this way preserving the pH difference that exist between the inside/outside of the cell.
For the case of alkalophilic I am not really sure.

Anyway, I have some papers in pdf format that I can send you. Just let me know. Greetings!

Juan
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Postby Dawn » Mon Nov 14, 2005 10:06 am

thanks Juan I would like to see those papers
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