Kinetics of EPR signal IIvf in chloroplast Photosystem II期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Kinetics of EPR signal IIvf in chloroplast Photosystem II

Authors:	Michael Boska Kenneth Sauer

Affiliation:	Laboratory of Chemical Biodynamics and Department of Chemistry, Lawrence Berkeley Laboratory, University of California, Berkeley, CA 94720 U.S.A.

Abstract:	The risetime of EPR signal II_vf (S II_vf) has been measured in oxygen-evolving Photosystem II particles from spinach chloroplasts at pH 6.0. The EPR signal shows an instrument-limited rise upon induction ( $t_{12} ? 3 μ s$ ). These data are consistent with a model where the species Z responsible for S II_vf is the immediate electron donor to P-680⁺ in spinach chloroplasts. A new, faster decay component of S II_vf has also been detected in these experiments.

Keywords:	Photosystem II ESR Electron transport (Spinach chloroplast) Mes 4-morpholineethanesulfonic acid Chl chlorophyll PS II Photosystem II S II EPR Signal II
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