[Effect of deuteration on the kinetics of photoinduced electron transport in the reaction centers of purple bacteria].
Substitution of H2O for D2O in the preparations of reaction centres from chromatophore membranes of photosynthesizing bacteria Rhodopseudomonas sphaeroides, 1760-1 results in a decrease of the efficiency of direct electron transfer from photoreduced primary quinone X1- to the secondary ones and in rising possibilities for reversible reaction X1- with photooxidized bacteriochlorophyll. The value of isotope effect which does not usually exceed 1.2 depends on temperature; it is not found in the temperature range below -60 degrees divided by -80 degrees C.
D020130:Bacterial Chromatophores / Q000528:radiation effects; D001429:Bacteriochlorophylls / Q000528:radiation effects*; D002734:Chlorophyll / Q000031:analogs & derivatives*; D003903:Deuterium; D004579:Electron Transport / Q000528:radiation effects*; D007700:Kinetics; D008027:Light; D010777:Photochemistry; D011809:Quinones / Q000528:radiation effects*; D012242:Rhodobacter sphaeroides / Q000032:analysis; D013696:Temperature
D001429:Bacteriochlorophylls; D011809:Quinones; D002734:Chlorophyll; D003903:Deuterium
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