[Establishment of the site of electron transport chain disruption in mutant Chlamydomonas chloroplasts with an inactive photosystem 2].
It has been shown in the studies of 6 strains of non-synthesizing Chlamydomonas reinhardi mutants with a damaged electron-transport chain (ETC) in the region of the Photosystem 2 (PS 2) that the damage is localized on the oxidizing side of PS 2. The ESR studies of the mutants have shown that signal 2 is absent in all the mutants, the width of signal 1 in some mutants is lower than in the control, which is, probably, concerned with the differences in the reaction centre structures. The ETC region from electron inlet from the donor--diphenylcarbaside to P700 is capable of functioning. It is suggested that in all the mutants studied the complex responsible for photodissociation of water is damaged.
D015086:2,6-Dichloroindophenol; D002696:Chlamydomonas / Q000235:genetics / Q000378:metabolism*; D002736:Chloroplasts / Q000378:metabolism*; D004160:Diphenylcarbazide / Q000378:metabolism; D004578:Electron Spin Resonance Spectroscopy; D004579:Electron Transport; D009154:Mutation; D010788:Photosynthesis
D004160:Diphenylcarbazide; D015086:2,6-Dichloroindophenol
Ustanovlenie mesta narusheniia élektrontransportnoĭ tsepi khloroplastov mutantov Chlamydomonas s neaktivnoĭ fotosistemoĭ 2.