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连续闪光后反应中心半醌吸收中振荡的阻尼：Q(-)AQB与QAQ(-)B之间平衡的测定

Damping of oscillations in the semiquinone absorption in reaction centers after successive flashes determination of the equilibrium between Q(-)AQB and QAQ(-)B.

作者信息

Kleinfeld D, Abresch E C, Okamura M Y, Feher G

出版信息

Biochim Biophys Acta. 1984 Jun 26;765(3):406-9. doi: 10.1016/0005-2728(84)90183-x.

DOI:10.1016/0005-2728(84)90183-x
PMID:21780326
Abstract

A quantitative model for the damping of oscillations of the semiquinone absorption after successive light flashes is presented. It is based on the equilibrium between the states Q(A)-Q(B) and Q(A) Q(-B). A fit of the model to the experimental results obtained for reaction centers from Rhodopseudomonas sphaeroides gave a value of α = [Q(A)-Q(B)I/(IQ(A)-Q(Bl)+ [Q(A)Q(-B)I) = 0.065 +/- 0.005 (T= 21°C, pH 8).

摘要

提出了一个关于连续闪光后半醌吸收振荡衰减的定量模型。它基于Q(A)-Q(B)和Q(A)Q(-B)状态之间的平衡。将该模型与球形红假单胞菌反应中心获得的实验结果进行拟合，得到α = [Q(A)-Q(B)]/([Q(A)-Q(B)] + [Q(A)Q(-B)]) = 0.065±0.005（T = 21°C，pH 8）。

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