Dictionary » Q » Quinone



aromatic dicarbonyl compound derived from a dihydroxy aromatic compound. Ubiquinone (coenzyme Q) is a dimethoxy dicarbonyl derivative of benzene involved in electron transport. Other quinones may act as tanning agents.

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The Fiber Disease

... and Reaction Mechanism of Bioenergetic Apparatuses Multiple approaches have been used to study the structure, function, and mechanism of quinone-mediated electron and proton transfer complexes of mitochondrial and photosynthesis electron transfer chains. Significant progresses have been ...

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by Nadas Moksha
Sun Nov 05, 2006 4:43 am
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5560325

water oxidizing clock in light reaction of photosynthesis

... to NADP or to ferredoxin (fd). It is a powerful reductant. PS2, on the other hand, is better at grabbing electrons from water to transfer them to quinone (Q). It is a good oxidant. I think it might answer your question! Thanx! Dip Jyoti Chakraborty

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by dipjyoti
Sat Oct 14, 2006 10:21 am
Forum: Botany Discussion
Topic: water oxidizing clock in light reaction of photosynthesis
Replies: 3
Views: 5708

Tomorrow is my birthday! PLEASE HELP ME!!

... O2 Complex I: NADH, FMN, FeS-proteins (FeS N1-N3) Complex I removes two electrons from NADH and transfers them to a lipid-soluble carrier, ubiquinone (Q). The reduced product, ubiquinol (QH2) is free to diffuse within the membrane. At the same time, Complex I moves four protons (H+) across ...

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by Trev
Mon Apr 03, 2006 10:03 am
Forum: Cell Biology
Topic: Tomorrow is my birthday! PLEASE HELP ME!!
Replies: 4
Views: 3032

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