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Literature DB >> 12390018

Calcium EXAFS establishes the Mn-Ca cluster in the oxygen-evolving complex of photosystem II.

Roehl M Cinco¹, Karen L McFarlane Holman, John H Robblee, Junko Yano, Shelly A Pizarro, Emanuele Bellacchio, Kenneth Sauer, Vittal K Yachandra.

Abstract

The proximity of Ca to the Mn cluster of the photosynthetic water-oxidation complex is demonstrated by X-ray absorption spectroscopy. We have collected EXAFS data at the Ca K-edge using active PS II membrane samples that contain approximately 2 Ca per 4 Mn. These samples are much less perturbed than previously investigated Sr-substituted samples, which were prepared after Ca depletion. The new Ca EXAFS clearly shows backscattering from Mn at 3.4 A, a distance that agrees with that surmised from previously recorded Mn EXAFS. This result is also consistent with earlier related experiments at the Sr K-edge, using samples that contained functional Sr, that show Mn is approximately 3.5 A distant from Sr. The totality of the evidence clearly advances the notion that the catalytic center of oxygen evolution is a Mn-Ca heteronuclear cluster.

Entities: Chemical

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Year: 2002 PMID： 12390018 PMCID： PMC3947642 DOI： 10.1021/bi026569p

Source DB: PubMed Journal: Biochemistry ISSN： 0006-2960 Impact factor: 3.162

32 in total

1. Chelator-induced disappearance of carboxylate stretching vibrational modes in S2/S1 FTIR spectrum in oxygen-evolving complex of photosystem II.

Authors: Y Kimura; T Ono
Journal: Biochemistry Date: 2001-11-20 Impact factor: 3.162

2. Theoretical models for the oxygen radical mechanism of water oxidation and of the water oxidizing complex of photosystem II.

Authors: P E Siegbahn
Journal: Inorg Chem Date: 2000-06-26 Impact factor: 5.165

3. Calcium induces binding and formation of a spin-coupled dimanganese(II,II) center in the apo-water oxidation complex of photosystem II as precursor to the functional tetra-Mn/Ca cluster.

Authors: G M Ananyev; G C Dismukes
Journal: Biochemistry Date: 1997-09-23 Impact factor: 3.162

4. An e.x.a.f.s. study of the manganese O2-evolving complex in purified Photosystem II membrane fractions. The S1 and S2 states.

Authors: D J MacLachlan; B J Hallahan; S V Ruffle; J H Nugent; M C Evans; R W Strange; S S Hasnain
Journal: Biochem J Date: 1992-07-15 Impact factor: 3.857

5. Quantifying the ion selectivity of the Ca2+ site in photosystem II: evidence for direct involvement of Ca2+ in O2 formation.

Authors: J S Vrettos; D A Stone; G W Brudvig
Journal: Biochemistry Date: 2001-07-03 Impact factor: 3.162

6. Electron-transfer events leading to reconstitution of oxygen-evolution activity in manganese-depleted photosystem II membranes.

Authors: A F Miller; G W Brudvig
Journal: Biochemistry Date: 1990-02-13 Impact factor: 3.162

7. Studies on 17,24 kD Depleted Photosystem II Membranes : I. Evidences for High and Low Affinity Calcium Sites in 17,24 kD Depleted PSII Membranes from Wheat versus Spinach.

Authors: K V Cammarata; G M Cheniae
Journal: Plant Physiol Date: 1987-07 Impact factor: 8.340

8. Studies of Ca2+ binding in spinach photosystem II using 45Ca2+.

Authors: P Adelroth; K Lindberg; L E Andréasson
Journal: Biochemistry Date: 1995-07-18 Impact factor: 3.162

9. High-resolution kinetic studies of the reassembly of the tetra-manganese cluster of photosynthetic water oxidation: proton equilibrium, cations, and electrostatics.

Authors: G M Ananyev; G C Dismukes
Journal: Biochemistry Date: 1996-11-19 Impact factor: 3.162

10. Evidence for the proximity of calcium to the manganese cluster of photosystem II: determination by X-ray absorption spectroscopy.

Authors: M J Latimer; V J DeRose; I Mukerji; V K Yachandra; K Sauer; M P Klein
Journal: Biochemistry Date: 1995-08-29 Impact factor: 3.162

32 in total

1. Kinetics of proton-coupled electron-transfer reactions to the manganese-oxo "cubane" complexes containing the Mn4O4(6+) and Mn4O4(7+) core types.

Authors: Marcelino Maneiro; Wolfgang F Ruettinger; Emilie Bourles; George L McLendon; G Charles Dismukes
Journal: Proc Natl Acad Sci U S A Date: 2003-03-18 Impact factor: 11.205

Review 2. The water-oxidation complex in photosynthesis.

Authors: Kenneth Sauer; Vittal K Yachandra
Journal: Biochim Biophys Acta Date: 2004-04-12

3. Synthetic model of the asymmetric [Mn3CaO4] cubane core of the oxygen-evolving complex of photosystem II.

Authors: Shreya Mukherjee; Jamie A Stull; Junko Yano; Theocharis C Stamatatos; Konstantina Pringouri; Troy A Stich; Khalil A Abboud; R David Britt; Vittal K Yachandra; George Christou
Journal: Proc Natl Acad Sci U S A Date: 2012-01-30 Impact factor: 11.205

4. Functional Models for the Oxygen-Evolving Complex of Photosystem II.

Authors: Clyde W Cady; Robert H Crabtree; Gary W Brudvig
Journal: Coord Chem Rev Date: 2008-02-01 Impact factor: 22.315

Review 5. X-ray spectroscopy of the Mn4Ca cluster in the water-oxidation complex of Photosystem II.

Authors: Kenneth Sauer; Junko Yano; Vittal K Yachandra
Journal: Photosynth Res Date: 2005 Impact factor: 3.573

6. Where water is oxidized to dioxygen: structure of the photosynthetic Mn4Ca cluster.

Authors: Junko Yano; Jan Kern; Kenneth Sauer; Matthew J Latimer; Yulia Pushkar; Jacek Biesiadka; Bernhard Loll; Wolfram Saenger; Johannes Messinger; Athina Zouni; Vittal K Yachandra
Journal: Science Date: 2006-11-03 Impact factor: 47.728

7. On the structure of the manganese complex of photosystem II: extended-range EXAFS data and specific atomic-resolution models for four S-states.

Authors: Holger Dau; Alexander Grundmeier; Paola Loja; Michael Haumann
Journal: Philos Trans R Soc Lond B Biol Sci Date: 2008-03-27 Impact factor: 6.237