plastoquinone

American  

[plas-toh-kwuh-nohn, -kwin-ohn] / ˌplæs toʊ kwəˈnoʊn, -ˈkwɪn oʊn /

noun

Biochemistry.

1. a quinone that occurs in the chloroplasts of plants and functions as an electron carrier during photosynthesis.

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Etymology

Origin of plastoquinone

1955–60; (chloro)plast or plast(id) + -o- + quinone

Example Sentences

In theory, electrons should move from chlorophyll to pheophytin and then to plastoquinone along both branches.

From Science Daily

Specifically, the transfer of electrons from pheophytin to plastoquinone in D2 requires twice as much activation energy as D1 -- a barrier that electrons seem unable to overcome, preventing energy from flowing forward.

From Science Daily