Coordination sphere and structure of the Mn cluster of the oxygen‐evolving complex in photosynthetic organisms
- 6 January 1997
- journal article
- Published by Wiley in FEBS Letters
- Vol. 400 (3) , 259-262
- https://doi.org/10.1016/s0014-5793(96)01345-2
Abstract
The great similarity between the binding of Fe(II) and the high‐affinity Mn‐binding site in the Mn‐depleted PSII membranes (Semin et al. (1996) FEBS Lett. 375, 223–226) suggests that the coordination sphere of Mn in PSII is also suitable for iron. A comparison is performed between the primary amino acid sequences of D1 and D2 and diiron‐oxo enzymes with the function of oxygen activation. All conservative motifs (EXXH) and residues binding and stabilizing the diiron cluster in diiron‐oxo enzymes have been found in the C‐terminal domains of D1 and D2 polypeptides. On the basis of these sequence similarities we suggest a structural model for the manganese cluster in the oxygen‐evolving complex.Keywords
This publication has 23 references indexed in Scilit:
- High‐specific binding of Fe(II) at the Mn‐binding site in Mn‐depleted PSII membranes from spinachFEBS Letters, 1995
- Nearest neighbor analysis of D1 and D2 subunits in the photosystem II reaction center using a bifunctional cross‐linker, hexamethylene diisocyanateFEBS Letters, 1994
- Molecular-Biological Approaches to Analyze Photosystem II Structure and FunctionAnnual Review of Plant Biology, 1993
- Protease treatments of photosystem II membrane fragments reveal that these are four separate high-affinity manganese-binding sitesBiochemistry, 1991
- The carboxyl modifier 1-ethyl-3-[3-(dimethylamino)propyl]carbodiimide (EDC) inhibits half of the high-affinity manganese-binding site in photosystem II membrane fragmentsBiochemistry, 1991
- Site-directed mutagenesis of photosynthetic reaction centersCurrent Opinion in Structural Biology, 1991
- Proteins containing oxo-bridged dinuclear iron centers: a bioinorganic perspectiveChemical Reviews, 1990
- Electron-transfer events leading to reconstitution of oxygen-evolution activity in manganese-depleted photosystem II membranesBiochemistry, 1990
- Lack of photoactivation capacity in Scenedesmus obliquus LF-1 results from loss of half the high-affinity manganese-binding siteBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1989
- The high-affinity binding site for manganese on the oxidizing side of Photosystem IIBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1987