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Rubisco

Discussion of all aspects of biological molecules, biochemical processes and laboratory procedures in the field.

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Rubisco

Postby shardy7984 on Mon Nov 21, 2005 2:51 am

I have a question about Rubisco & light reactions.

Why does a poison that inhibits rubisco in the Calvin Cycle, also inhibit light reactions?

Is it b/c of carbon fixation & photorespiration? Or does that have nothing to do with it? But Oxygen is the poison that inhibits the enzyme right?
Sorry, this is something that just confuses me.
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The light reactions stop....

Postby MasterChief on Tue Nov 22, 2005 12:20 am

Poison that affects rubisco causes a stop in the calvin cycle. This means that all the NADPH from the light reactions have no where to place their electrons and become NADP+. This causes a stop in the light reactions because excitating the electrons in chlorophyll no longer produces useable electrons.
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Postby shardy7984 on Tue Nov 22, 2005 4:15 am

THANK YOU :D
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