Plastoquinone (PQ) is a quinone molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis. Plastoquinone is reduced (accepts two protons (H+) from the stromal matrix of the chloroplast, coupled to two electrons (e-) from photosystem II), forming plastoquinol. It transports the protons to the lumen of thyl...
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http://en.wikipedia.org/wiki/Plastoquinone
(from the article `photosynthesis`) Small molecules called plastoquinones are found in substantial numbers in the lamellae. Like the cytochromes, quinones have important roles in ...
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http://www.britannica.com/eb/a-z/p/77
<plant biology> A quinone present in chloroplasts, forming part of the photosynthetic electron transport chain. Closely associated with photosystem II. May be stored in plastoglobuli. ... (31 Dec 1997) ...
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http://www.encyclo.co.uk/local/20973
A quinone present in chloroplasts, forming part of the photosynthetic electron transport chain. Closely associated with photosystem II. May be stored in plastoglobuli.
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http://www.encyclo.co.uk/visitor-contributions.php
(PQ) Type: Term Pronunciation: plas′tō-kwin′ōn Definitions: 1. a trivial name sometimes used for plastoquinone-9.
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http://www.medilexicon.com/medicaldictionary.php?t=69507
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