Skip navigation
Skip navigation

The two substrate-water molecules are already bound to the oxygen evolving complex in the S2 state of photosystem II

Hendry, G; Wydrzynski, Thomas


The first direct evidence which shows that both substrate-water molecules are bound to the O2-evolving catalytic site in the S2 state of photosystem II (PSII) is presented. Rapid 18O isotope exchange measurements between H218O incubated in the S2 state of PSII-enriched membrane samples and the photogenerated O2 reveal a fast and a slow phase of exchange at m/e 34 (which measures the level of the 16O18O product). The rate constant for the slow phase of exchange (34k1) equals 1.9 ± 0.3 s-1 at 10...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Biochemistry
DOI: 10.1021/bi026246t


File Description SizeFormat Image
01_Hendry_The_two_substrate-water_2002.pdf133.6 kBAdobe PDF    Request a copy

Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  17 November 2022/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator