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Photosynthetic oxygen evolution does not require the participation of polypeptides of 16 and 24 kilodaltons.

Abstract：

:Oxygen evolution from Triton X-100 prepared photosystem II particles from spinach was inhibited 70-80% after treatment of the particles with high concentrations of salt (0.5 or 1 M NaCl). The salt-washed preparations were depleted of 16 and 24 kilodalton polypeptides. Nearly complete restoration of herbicide-sensitive electron transport activity was observed upon addition of Cl-. Maintenance of the maximal rates required the presence of Ca2+. Restoration of the activity did not require the readdition (reconstitution) of the extracted polypeptides indicating that the 16 and 24 kilodalton polypeptides do not participate directly in the water-oxidation process. They may, however, play a regulatory role, e.g., in the sequestering of Cl- and/or Ca2+.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Nakatani HY

doi

10.1016/0006-291x(84)91448-7

subject

Has Abstract

pub_date

1984-04-16 00:00:00

pages

299-304

issue

1

eissn

0006-291X

issn

1090-2104

pii

0006-291X(84)91448-7

journal_volume

120

pub_type

杂志文章

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