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Plastoquinone vs. Plastocyanin

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Plastoquinonenoun

(biochemistry) a quinone, related to the carotenoids, involved in the electron transport process of photosynthesis

Plastocyaninnoun

(protein) A important copper-containing protein, involved in electron transfer

Plastoquinone

Plastoquinone (PQ) is an isoprenoid quinone molecule involved in the electron transport chain in the light-dependent reactions of photosynthesis. The most common form of plastoquinone, known as PQ-A or PQ-9, is a 2,3-dimethyl-1,4-benzoquinone molecule with a side chain of nine isoprenyl units.

Plastocyanin

Plastocyanin is a copper-containing protein that mediates electron-transfer. It is found in a variety of plants, where it participates in photosynthesis.

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