Evidence for a Direct Manganese-Oxygen Ligand in Water Binding to the S2 State of the Photosynthetic Water Oxidation Complex

M. C.W. Evans; J. H.A. Nugent; R. J. Ball; I. Muhiuddin; R. J. Pace

doi:10.1021/bi035489y

Evidence for a Direct Manganese-Oxygen Ligand in Water Binding to the S₂ State of the Photosynthetic Water Oxidation Complex

M. C.W. Evans^*, J. H.A. Nugent, R. J. Ball, I. Muhiuddin, R. J. Pace

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

The interaction of water with the water oxidizing Mn complex of photosystem II has been investigated using electron spin-echo envelope modulation spectroscopy in the presence of H₂¹⁷O. The spectra show interaction of the ¹⁷O with the preparation in the S₂ state induced by 200 K illumination. The modulation is observed only in the center of the multiline spectrum. The inferred hyperfine coupling terms are compatible with water (not hydroxyl) oxygen bound to a particular quasi-axial Mn^III center in a coupled Mn cluster.

Original language	English
Pages (from-to)	989-994
Number of pages	6
Journal	Biochemistry
Volume	43
Issue number	4
DOIs	https://doi.org/10.1021/bi035489y
Publication status	Published - 3 Feb 2004

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title = "Evidence for a Direct Manganese-Oxygen Ligand in Water Binding to the S2 State of the Photosynthetic Water Oxidation Complex",

abstract = "The interaction of water with the water oxidizing Mn complex of photosystem II has been investigated using electron spin-echo envelope modulation spectroscopy in the presence of H217O. The spectra show interaction of the 17O with the preparation in the S2 state induced by 200 K illumination. The modulation is observed only in the center of the multiline spectrum. The inferred hyperfine coupling terms are compatible with water (not hydroxyl) oxygen bound to a particular quasi-axial MnIII center in a coupled Mn cluster.",

author = "Evans, \{M. C.W.\} and Nugent, \{J. H.A.\} and Ball, \{R. J.\} and I. Muhiuddin and Pace, \{R. J.\}",

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T1 - Evidence for a Direct Manganese-Oxygen Ligand in Water Binding to the S2 State of the Photosynthetic Water Oxidation Complex

AU - Evans, M. C.W.

AU - Nugent, J. H.A.

AU - Ball, R. J.

AU - Muhiuddin, I.

AU - Pace, R. J.

PY - 2004/2/3

Y1 - 2004/2/3

N2 - The interaction of water with the water oxidizing Mn complex of photosystem II has been investigated using electron spin-echo envelope modulation spectroscopy in the presence of H217O. The spectra show interaction of the 17O with the preparation in the S2 state induced by 200 K illumination. The modulation is observed only in the center of the multiline spectrum. The inferred hyperfine coupling terms are compatible with water (not hydroxyl) oxygen bound to a particular quasi-axial MnIII center in a coupled Mn cluster.

AB - The interaction of water with the water oxidizing Mn complex of photosystem II has been investigated using electron spin-echo envelope modulation spectroscopy in the presence of H217O. The spectra show interaction of the 17O with the preparation in the S2 state induced by 200 K illumination. The modulation is observed only in the center of the multiline spectrum. The inferred hyperfine coupling terms are compatible with water (not hydroxyl) oxygen bound to a particular quasi-axial MnIII center in a coupled Mn cluster.

UR - https://www.scopus.com/pages/publications/0942268918

U2 - 10.1021/bi035489y

DO - 10.1021/bi035489y

M3 - Article

SN - 0006-2960

VL - 43

SP - 989

EP - 994

JO - Biochemistry

JF - Biochemistry

IS - 4

ER -

Evidence for a Direct Manganese-Oxygen Ligand in Water Binding to the S₂ State of the Photosynthetic Water Oxidation Complex

Abstract

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