On the change of the charges in the four photo‐induced oxidation steps of the water‐splitting enzyme system S
- 15 October 1984
- journal article
- Published by Wiley in FEBS Letters
- Vol. 176 (1) , 83-87
- https://doi.org/10.1016/0014-5793(84)80916-3
Abstract
After dark adaptation of oxygen‐evolving PS II complexes, oscillatory absorption changes (stable > 0.5 s) with a periodicity of 4 were detected at 514 nm. They have been correlated with the four oxidation states of the water‐splitting enzyme system S. Supposing that the changes are due to electrochromic shifts, they might indicate a positive surplus charge in states S2and S3. This means that the electron release pattern 1:1:1:1 is accompanied by a pattern of charge formation 0: + : + : 0 and an intrinsic proton release stoichiometry 1:0:1:2 for the transitions So→S1, S1→S2, S2→S3, S3→S0.Keywords
This publication has 21 references indexed in Scilit:
- Analysis of the Chl-a+II reduction kinetics with nanosecond time resolution in oxygen-evolving Photosystem II particles from Synechococcus at 680 and 824 nmBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1984
- Optical characterization of Photosystem II electron donorsBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1984
- Spectral characterization in the ultraviolet region of the precursor of photosynthetically evolved oxygen in isolated trypsinized chloroplastsBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1983
- Electron transfer and proton pumping under excitation of dark-adapted chloroplasts with flashes of lightBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1981
- Kinetic models for the electron donors of photosystem II of photosynthesisBiochimica et Biophysica Acta (BBA) - Reviews on Bioenergetics, 1980
- Energy conversion in the functional membrane of photosynthesis. Analysis by light pulse and electric pulse methodsBiochimica et Biophysica Acta (BBA) - Reviews on Bioenergetics, 1979
- Proton evolution from photosystem II stoichiometry and mechanistic considerationsBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1977
- Analysis of absorption changes in the ultraviolet related to charge-accumulating electron carriers in Photosystem II of chloroplastsBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1977
- Absorbance changes due to the charge-accumulating species in System 2 of photosynthesisBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1976
- Further evidence of X‐320 as a primary acceptor of photosystem II in photosynthesisFEBS Letters, 1973