plastoquinone


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plastoquinone

[‚plas·tə·kwə′nōn]
(biochemistry)
Any of a group of quinones that are involved in electron transport in chloroplasts during photosynthesis.
References in periodicals archive ?
The kinetic difference between points I and P (30 ms to nearly 300 ms) reflects changes in the flow of electrons from plastoquinone (PQ) to the final electron acceptor of PSI (Yusuf et al.
In another experimental study, the authors used a mitochondria-targeted compound containing a charged rhodamine molecule conjugated with plastoquinone named SkQR1 (Figure 2) [76].
The plastid ndh genes encode components of the thylakoid Ndh complex, which is analogous to the NADH dehydrogenase or complex I of the mitochondrial respiratory chain and catalyzes the transfer of electrons from NADH to plastoquinone [32,6,28].
m] indicates that the initial rate of reduction of the plastoquinone (Qa) was higher than the rate of plastoquinone reoxidation by b (Qb) and the activity of photosystem I (PSI) when plants were exposed to higher concentrations of NaCl.
is a moderately reductant plastoquinone unable to reduce the [NADP.
2[Alpha]] was to inhibit the successive PS-I reactions from plastoquinone through P700 to the methylviologen acceptance site in the electron transport chain.
Neuroprotective effects of mitochondria-targeted plastoquinone and thymoquinone in a rat model of brain ischemia/reperfusion injury," Molecules, vol.
The ratio RC/CSm is the amount of RCs per excited cross section (CSm), which is the density of second plastoquinone acceptors (QA) reducing PSII RC per CSm.
should be shifted to the left in case of ubiquinone and to the right in case of plastoquinone, in agreement with our observations and also the earlier reports on the long life of pulse-generated ubiquinone radicals in the presence of oxygen [117, 119].