A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is
The 'H and 13C NMR peaks from the imidazole rings of the two histidine residues in Anabaena variabilis ferredoxin I1 (histidine-16 and histidine-93) were assigned by reference to spectra of the homologous ferredoxin from Spirulina maxima which contains only one histidine residue (histidine-93). The conserved histidine-93 has unusual properties: its pKL in the oxidized protein is abnormally low (5.3 in A . variabilis ferredoxin and 5.9 in S . maxima ferredoxin); its chemical shifts do not change with temperature butdoi:10.1021/bi00294a044 fatcat:vmybw3q6cngejk5qvi6jgdzqt4