AN ELECTROGENIC REACTION ASSOCIATED WITH THE REREDUCTION OF P680 BY TYR-Z IN PHOTOSYSTEM-II

Autor(en): POKORNY, A
WULF, K
TRISSL, HW
Stichwörter: Biochemistry & Molecular Biology; Biophysics; COMPLEX; KINETICS; LOCATION; OXYGEN-EVOLVING SYSTEM; PHOTOSYNTHESIS; PHOTOSYNTHETIC REACTION-CENTER; PHOTOSYSTEM II; PHOTOVOLTAGE; PROTEIN; RHODOPSEUDOMONAS-VIRIDIS; SINGLE FLASHES; THYLAKOID MEMBRANE; TYROSINE Z; WATER OXIDATION
Erscheinungsdatum: 1994
Herausgeber: ELSEVIER SCIENCE BV
Journal: BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
Volumen: 1184
Ausgabe: 1
Startseite: 65
Seitenende: 70
Zusammenfassung: 
The location of tyrosine Z (D1 Tyr-161), the immediate donor to photooxidized P680, has been probed using a fast photovoltage technique. We found an electrogenic reaction with an amplitude of 16% of the charge separated state P680(+)Q(A)(-) and a time constant of 29 ns which is attributed to the electron transfer between Tyr Z and P680. The result is discussed in the light of current structural models.
ISSN: 00052728
DOI: 10.1016/0005-2728(94)90154-6

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