Iron K-edge X-ray absorption spectroscopy of the iron-molybdenum cofactor of nitrogenase from Klebsiella pneumoniae.
Biochem J
; 252(2): 421-5, 1988 Jun 01.
Article
em En
| MEDLINE
| ID: mdl-3046607
ABSTRACT
Iron K-edge X-ray absorption data for the iron-molybdenum cofactor ('FeMoco') from Klebsiella pneumoniae reported here provide the first evidence for long-range structural order in the cofactor [Fe...Fe(Mo) = 0.368 nm in addition to Fe...S = 0.22 nm and Fe...Fe(Mo) = 0.27 nm] and, in contrast with previously published data [Antonio, Teo, Orme-Johnson, Nelson, Groh, Lindahl, Kauzlarich & Averill (1982) J. Am. Chem. Soc. 104, 4703-4705], indicate that most of the iron centres are not co-ordinated to light (oxygen, nitrogen) atoms. This demonstrates that presently available chemical models for FeMoco are inadequate.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ferredoxinas
/
Ferro
/
Klebsiella pneumoniae
/
Molibdoferredoxina
/
Nitrogenase
Idioma:
En
Revista:
Biochem J
Ano de publicação:
1988
Tipo de documento:
Article
País de afiliação:
Reino Unido