Replacement of the proximal ligand of sperm whale myoglobin with free imidazole in the mutant His-93-->Gly.
Barrick, D.(1994) Biochemistry 33: 6546-6554
- PubMed: 8204590 
- PubMed Abstract: 
The proximal bond between the iron atom of the heme group and the N epsilon of histidine F8 in myoglobin (Mb) and hemoglobin (Hb) is presumed to be an important determinant of heme binding, protein structure, and oxygen binding. Here a system is desc ...