Infrared spectroscopic evidence of hydrogen bonding between carbon monoxide and protein in carbonylhorseradish peroxidase C
1983
Carbonylhorseradish peroxidase isoenzyme C2 (EC 1.11.1.7) exhibits two bands in the infrared spectrum attributable to the ligand CO at 1933.5 and 1905 cm−1. Replacement of H2O by D2O results in shifts to both bands to new positions at 1932.5 and 1902.5 cm−1. The results indicate strong hydrogen bonding to the terminal oxygen of CO, of strength comparable to that recently observed for oxyhemoglobin and oxymyoglobin.
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