EXAFS studies of nickel(II) and nickel(I) factor 430 M. Conformational flexibility of the F430 skeleton

Journal Article · Tue Nov 20 23:00:00 EST 1990 · Journal of the American Chemical Society; (United States)

DOI:https://doi.org/10.1021/ja00180a058· OSTI ID:5192050

Furenlid, L R; Renner, M W; Fajer, J ^[1]

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1. Brookhaven National Lab., Upton, NY (USA)

Factor 430 (F430) is a Ni(II) tetrapyrrole (corphin) found in methyl coenzyme M reductase, the enzyme catalyzes the terminal stages of the conversion of carbon dioxide in methane biogenesis. The authors present here EXAFS results for the low-spin (LS) Ni(II) form of F430 M{sup 10} and for its paramagnetic Ni(I) reduction intermediate. The significant differences in Ni-N bond lengths found for the low- and high-spin Ni(II), 1.90 vs. 2.10 {angstrom}, demonstrate the considerable conformational flexibility of the F430 skeleton.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5192050
• Journal Information: Journal of the American Chemical Society; (United States), Journal Name: Journal of the American Chemical Society; (United States) Vol. 112:24; ISSN 0002-7863; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
550200* -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
ABSORPTION SPECTROSCOPY
AZOLES
BACTERIA
BIOCHEMISTRY
CHEMISTRY
COENZYMES
COMPLEXES
CONFORMATIONAL CHANGES
DATA
ENZYMES
EXPERIMENTAL DATA
HETEROCYCLIC COMPOUNDS
INFORMATION
METHANOGENIC BACTERIA
MICROORGANISMS
NICKEL COMPLEXES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDOREDUCTASES
PYRROLES
SPECTROSCOPY
TRANSITION ELEMENT COMPLEXES