This article is cited in 1 paper

Early reactions in green-plant photosystem I

B. Ke^ab, V. A. Shuvalov^ba, E. Dolan<sup>ab

a</sup> Research laboratory of them. Charles F. Kettering, Yellow Springs, Ohio, USA
^b Institute of photosynthesis USSR Academy of Sciences, Pushchino-on-Oka

Abstract: A report is given of the recent progress in studies of the nature of the earliest electron acceptors in greenplant photosystem I and of the spectral and kinetic properties of these acceptors. These studies were carried out by optical and ESR spectroscopy methods, and also by subnanosecond detection of shortlived compounds. A sequence of the primary processes in the reaction centers of photosystem I was established. It was found that an electron passes from P700 to a primary acceptor (chlorophyll-a dimer) in less than 60 psec and then, in the next 200 psec, the anion radical of this dimer donates an electron to iron-sulfur proteins. It is concluded that the primary reactions in the centers of photosystem I are very similar to the reactions in bacterial reaction centers.

UDC: 541.144.7:621.373.826

PACS: 87.25.Bd

Received: 27.03.1979

 English version: Soviet Journal of Quantum Electronics, 1980, 10:3, 266–270

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