| 释义 |
plastoquinone Biochem.|plæstəʊˈkwɪnəʊn|
[f. chloroplast + -o + quinone.]
Any of a homologous series of compounds which have a quinone nucleus with a terpenoid sidechain, and which occur in the chloroplasts of plants; spec. one having the formula C48H72O2.
1958F. L. Crane in Plant Physiol. XXXIV. 547/1 It is proposed that Q254 should be called plastoquinone... This name will serve to emphasize the localization in chloroplasts and possibly other plastid structures. 1968New Scientist 25 Jan. 189/1 Terpenoids in chloroplasts of green leaves include..plastoquinone. 1973Biochim. & Biophys. Acta CCCI. 36 Several homologues of plastoquinone..have been detected in algae and chloroplasts of higher plants... The detailed chemical structure of plastoquinones B and C is not known yet. 1975D. Jarvis tr. D. Hess's Plant Physiol. 41 Another important redox system which is engaged in electron transport in photosynthesis is plastoquinone. 1978Sci. Amer. Mar. 111/3 The two electrons that cross the membrane from P-680 are picked up at the outer surface by a hydrogen carrier similar in structure to ubiquinone but called plastoquinone, or PQ. |