plastoquinone


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plastoquinone

(ˌplæstəʊˈkwɪnəʊn)
n
(Biochemistry) biochem any compound having a quinone nucleus with a terpenoid side chain
References in periodicals archive ?
Quantitation of the rapid electron donors to P700, the functional plastoquinone pool, and the ratio of the photosystems in spinach chloroplasts.
In this compound named SkQ1, ubiquinone was replaced by plastoquinone (Figure 2) [54, 73].
This normalization serves to distinguish the sequence of events from exciton trapping by PSII up to plastoquinone (PQ) reduction (O-I phase; [W.
Chistyakov VA, Prazdnova EV, Gutnikova LV, Sazykina MA, Sazykin IS (2012) Superoxide scavenging activity of plastoquinone derivative 10-(6'-plastoquinonyl) decyltriphenylphosphonium (SkQ1).
Photosystem II (PSII) of the photosynthetic apparatus is a multi subunit pigment-protein complex in the thylakoid membrane, which performs light-induced oxidation of water and reduction of plastoquinone.
are undermining the activity cycle of carbon fixation (ABDEL-LATIF, 2008) can also be a reason for the rate of reoxidation of the plastoquinone (Qa) being less than the rate of reduction, thus leading to a reduction of [F.
is mediated by two photosystems, operating in series through a chain of redox transporters that comprises plastoquinone, the cytochrome [b.
From the PS II reaction center, electrons flow to plastoquinone molecules, which are floating freely in the thylakoid membrane, and from there to another membrane-protein complex, the cytochrome [b.
PS II transfers electrons from water to plastoquinone, and PSI move electrons from plastocyanin to NADP+ (Allakhverdiev et al.
Another synthetic mitochondrial scavenger is the plastoquinone SkQ1, which used in a lower concentration than that of MitoQ was also able to reduce the infarct size and arrhythmias in rats subjected to I/R [190].
It is known that most PSII reaction centers are localized in the appressed region of the thylakoid membrane, within the grana stacks [6,7] and that diffusion of plastoquinone (PQ) is restricted to small membrane domains, including a few PSII centers [8,] Consequently, PQH2 generated by PSII can only be reoxidized by that fraction of cyt bf also localized in the appressed region ([approximately equal to] 47%) (6).