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Proton magnetic resonance studies of 7Fe ferredoxins
Author(s) -
Nagayama K.,
Imax T.,
Ohmori D.,
Oshima T.
Publication year - 1984
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(84)80293-8
Subject(s) - thermus thermophilus , ferredoxin , chemistry , ferricyanide , redox , proton nmr , mycobacterium smegmatis , nuclear magnetic resonance , inorganic chemistry , stereochemistry , biochemistry , mycobacterium tuberculosis , tuberculosis , medicine , physics , escherichia coli , pathology , gene , enzyme
The redox couples in 7Fe ferredoxins (Fd) treated with ferricyanide were monitored by 1 H‐NMR. An excess amount of ferricyanide was found to effect conversion of one of the two redox centers, the 4Fe core, to a 3Fe core in the ferredoxins extracted from Thermus thermophilus, Mycobacterium smegmatis and Pseudomonas ovalis . On long term incubation in air, the converted 3Fe core showed even further change in NMR spectra.