AFFINITY LABELING BY ATP AND GTP OF THE NUCLEAR-ENCODED OEC23 PROTEINOF THE PHOTOSYSTEM-II OXYGEN-EVOLVING COMPLEX

Authors
GAL A HERRMANN RG OHAD I
Citation
A. Gal et al., AFFINITY LABELING BY ATP AND GTP OF THE NUCLEAR-ENCODED OEC23 PROTEINOF THE PHOTOSYSTEM-II OXYGEN-EVOLVING COMPLEX, Journal of photochemistry and photobiology.B, Biology, 36(3), 1996, pp. 307-311
Citations number
25
Categorie Soggetti
Biophysics,Biology
Journal title
Journal of photochemistry and photobiology.B, Biology → ACNP
ISSN journal
10111344
Volume
36
Issue
3
Year of publication
1996
Pages
307 - 311
Database
ISI
SICI code
1011-1344(1996)36:3<307:ALBAAG>2.0.ZU;2-5
Abstract
The isolated OEC23 (oxygen evolving complex) protein of Photosystem II can be affinity-labeled by ATP and GTP in the presence of UV light. L abeling is competed by ADP, AMP and NAD as well as by the ATP analogs ATP-gamma-S and 5'-p-Fluorosulfonylbenzoyl-adenosine (FSBA) and is inh ibited by Dithiothreitol (DTT). The physiological significance of this finding and the possible implication of ATP and GTP binding in thylak oid membrane dynamics remains to be further investigated.