球形红假单胞菌R-26的载色体对泛醌的还原作用及质子摄取：连续光闪中二者的周期性
Ubiquinone reduction and proton uptake by chromatophores of Rhodopseudomonas sphaeroides R-26: periodicity of two in consecutive light flashes.
作者信息
Barouch Y, Clayton R K
出版信息
Biochim Biophys Acta. 1977 Dec 23;462(3):785-8. doi: 10.1016/0005-2728(77)90120-7.
PMID:304359
Abstract
Chromatophores of Rhodopseudomonas sphaeroides strain R-26 were subjected to a series of brief flashes of light in the presence of diaminodurene as an electron donor. Odd-numbered flashes induced the reduction of ubiquinone to the anionic semiquinone, as indicated by absorbance changes near 450 nm. This reaction was not attended by proton binding. Even-numbered flashes caused disappearance of the semiquinone, presumably by conversion to the fully reduced form. This reaction was attended by proton uptake.
摘要
在作为电子供体的二氨基杜烯存在的情况下，对球形红假单胞菌R-26菌株的载色体进行一系列短暂的闪光照射。奇数闪光诱导泛醌还原为阴离子半醌，这由450nm附近的吸光度变化表明。该反应没有质子结合。偶数闪光导致半醌消失，推测是转化为完全还原形式。该反应伴随着质子摄取。
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