On the role of water‐soluble polypeptides (17, 23 kDa), calcium and chloride in photosynthetic oxygen evolution

FEBS Letters

Babcock, Gerald T.¹  Yocum, Charles F.²  Ghanotakis, Demetrios F.² 

[1] Department of Chemistry, Michigan State University, East Lansing, MI 48824, USA;Division of Biological Sciences, The University of Michigan, Ann Arbor, MI 48109 USA

关键词: Photosystem II;    Polypeptide;    Oxygen evolution;    Calcium;    Chloride;   

DOI  :  10.1016/0014-5793(85)80030-2

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Contrary to the assertion by Preston and Critchley [(1985) FEBS Lett. 184, 318-332] that there is no correlation between calcium and water-soluble 23 and 17 kDa polypeptides in promoting oxygen evolution activity, it can be shown that both calcium and the polypeptides are required for activity under physiological conditions. In the absence of the two polypeptides, non-physiological concentrations of both calcium and chloride must be present for activity; neither ion can, by itself, promote high rates of oxygen evolution.

【 授权许可】

Unknown