Proteins that are rich in the amino acid histidine (and hence basic), relatively deficient in isoleucine, and contain average amounts of arginine and tryptophan. Often found as the protein part of conjugated proteins such as haemoglobin.
A protein which combines with other substances to form compounds such as haemoglobin and myoglobin.
The polypeptide components of myoglobin and hemoglobin.
Protein in hemoglobin, the oxygen-carrying compound of red blood cells.
A protein, found in the body, that can combine with iron-containing groups to form hemoglobin (found in red blood cells) and myoglobin (found in muscle).