Evidence for the role of myoglobin in facilitating oxygen transport.
Cyclic voltammetric studies of the heterogeneous electron-transfer reactions of myoglobin under aerobic and anaerobic conditions are reported. Evidence for a role of myoglobin that has not been previously measured directly, namely, facilitation of oxygen transport, is presented. It is suggested that one molecule of oxygen can be contained within the structure of the oxidized form of myoglobin, but is not co-ordinated to the heme iron. Reduced myoglobin binds one molecule of oxygen to the heme iron but no reports have been found that suggest that the oxidized form of myoglobin binds to, or contains a molecule of, oxygen.
King
B C
BC
Department of Chemistry, Virginia Commonwealth University, Box 2006, Richmond, VA 23284, U.S.A.
Hawkridge
F M
FM