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AbstractDesulforedoxin is a simple dimeric protein isolated from Desulfovibriogigas containing a distorted rubredoxin-like center with one iron coordinated by four cysteinyl residues (7.9kDa with a 36-amino-acid monomer). 1H NMR spectra of the oxidized Dx(Fe3+) and reduced Dx(Fe2+) forms were analyzed. The spectra show substantial line broadening due to the paramagnetism of iron. However, very low-field-shifted...
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