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Interaction of product analogues with the active site of rhodobacter sphaeroides dimethyl sulfoxide reductase.

ABSTRACT: We report a structural characterization using X-ray absorption spectroscopy of Rhodobacter sphaeroides dimethyl sulfoxide (DMSO) reductase reduced with trimethylarsine and show that this is structurally analogous to the physiologically relevant dimethyl sulfide reduced DMSO reductase. Our data unambiguously indicate that these species should be regarded as formal MoIV species and indicate a classical coordination complex of trimethylarsine oxide, with no special structural distortions. The similarity of the trimethylarsine and dimethyl sulfide complexes suggests, in turn, that the dimethyl sulfide reduced enzyme possesses a classical coordination of DMSO with no special elongation of the S-O bond, as previously suggested.

SUBMITTER: George GN

PROVIDER: S-EPMC1945231 | biostudies-literature | 2007 Apr

REPOSITORIES: biostudies-literature

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Interaction of product analogues with the active site of rhodobacter sphaeroides dimethyl sulfoxide reductase.

George Graham N GN Nelson Kimberly Johnson KJ Harris Hugh H HH Doonan Christian J CJ Rajagopalan K V KV

Inorganic chemistry 20070316 8

We report a structural characterization using X-ray absorption spectroscopy of Rhodobacter sphaeroides dimethyl sulfoxide (DMSO) reductase reduced with trimethylarsine and show that this is structurally analogous to the physiologically relevant dimethyl sulfide reduced DMSO reductase. Our data unambiguously indicate that these species should be regarded as formal MoIV species and indicate a classical coordination complex of trimethylarsine oxide, with no special structural distortions. The simil ...[more]

PMID: 17361996

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