EPR signals from modified charge accumulation states of the oxygen-evolving enzyme in calcium-deficient photosystem II

Boussac, Alain; Luc Zimmermann, Jean; William Rutherford, A.

doi:10.1021/bi00449a005

Public

EPR signals from modified charge accumulation states of the oxygen-evolving enzyme in calcium-deficient photosystem II

Published in Biochemistry • Nov 14, 1989

Authors:

Alain Boussac

Jean Luc Zimmermann

A. William Rutherford

Abstract

Photosystem II enriched membranes were depleted of Ca2+ and the 17- and 23-kDa polypeptides by treatment with NaCl and EGTA. The 17- and 23-kDa polypeptides were then reconstituted. This preparation was incapable of O2 evolution until Ca2+ was added. An EPR study revealed the presence of two new EPR...

Subject

Photosystem II

Electron paramagnetic resonance

Oxygen

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