What does the Sr-substituted 2.1 Å resolution crystal structure of photosystem II reveal about the water oxidation mechanism?

Date

2014

Authors

Terrett, Richard
Petrie, Simon
Pace, Ronald
Stranger, Robert

Journal Title

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Volume Title

Publisher

Royal Society of Chemistry

Abstract

A density functional study of the Sr-substituted photosystem II water oxidising complex demonstrates that its recent X-ray crystal structure is consistent with a (MnIII)4 oxidation state pattern, and with a Sr-bound hydroxide ion. The Sr-water-hydroxide interactions rationalize differences in the exchange rates of substrate water and kinetics of dioxygen bond formation relative to the Ca-containing structure.

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Source

Chemical Communications

Type

Journal article

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2037-12-31