Proton Magnetic Resonance Study of Ferredoxin from Clostridium pasteurianum*
AUTOR(ES)
Poe, M.
RESUMO
Magnetic susceptibilities of both reduced and oxidized ferredoxin from Clostridium pasteurianum were obtained in solution. Whereas the reduced form exhibits a Curie law behavior, the magnetic susceptibility of oxidized ferredoxin in fact increases with temperature and suggests extensive antiferromagnetic exchange coupling between the component iron atoms. Contact-shifted resonances are observed for both forms of ferredoxin that are attributed to the β-CH2 protons of the eight cysteine residues. A model based on these results is presented.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=282985Documentos Relacionados
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