A comparison between the multiline EPR signals of spinach andAnacystis nidulansand their temperature dependence
- 14 September 1987
- journal article
- Published by Wiley in FEBS Letters
- Vol. 221 (2) , 245-248
- https://doi.org/10.1016/0014-5793(87)80934-1
Abstract
The multiline EPR signals arising from manganese in the S2state of the oxygen‐evolving system of spinach and the cyanobacteriumAnacystis nidulanshave very similar properties and are affected identically by NH3, suggesting that the system is highly conserved. The temperature dependence of the signal amplitude follows Curie behavior down to sub‐helium temperatures. This is in contrast to previous reports, which were taken as evidence for a tetrameric manganese cluster. Thus, it seems that it is not yet possible from EPR data alone to distinguish between this model and a dimeric structure.Keywords
This publication has 12 references indexed in Scilit:
- The Origin of the Multiline and g = 4.1 Electron Paramagnetic Resonance Signals from the Oxygen-Evolving System of Photosystem IIBiophysical Journal, 1987
- Evidence for an association between a 33 kDa extrinsic membrane protein, manganese and photosynthetic oxygen evolution. I. Correlation with the S2 multiline EPR signalBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1987
- Spectroscopic Characterization of a Photosystem II Preparation from the Blue-Green Alga (Cyanobacterium) Anacystis nidulans.Acta Chemica Scandinavica, 1987
- Magnetic properties of manganese in the photosynthetic O2-evolving complex. 2. Evidence for a manganese tetramerJournal of the American Chemical Society, 1986
- Studies on the polypeptide composition of the cyanobacterial oxygen-evolving complexBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1985
- Active and resting states of the oxygen-evolving complex of photosystem IIBiochemistry, 1985
- The roles of the extrinsic subunits in Photosystem II as revealed by EPRBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1985
- Calcium reconstitutes high rates of oxygen evolution in polypeptide depleted Photosystem II preparationsFEBS Letters, 1984
- Intermediates of a polynuclear manganese center involved in photosynthetic oxidation of waterProceedings of the National Academy of Sciences, 1981
- Determination of the zero-field splitting of Fe3+ in heme proteins from the temperature dependence of the spin-lattice relaxation rateBiochimica et Biophysica Acta (BBA) - General Subjects, 1971