mammalian protein found in Homo sapiens

Myoglobin is a protein that is able to bind oxygen. Myoglobin, which is similar to haemoglobin, is the main oxygen-carrying pigment of muscle tissues.[1] Like haemoglobin, it has a porphyrin ring with an iron atom at its centre. It is in the muscle tissue of most mammals. Seals and other marine mammals have more myoglobin in their muscles than land animals.

Myoglobin 3-D structre

In humans, increased level of myoglobin in the serum of the blood can be an indication of myocardial infarction. Other factors for a higher level can be damage to the muscles, epileptic seizures, polytrauma. If the value is much too high, this can lead to kidney failure.


  1. Ordway G.A. & Garry D.J. (2004). "Myoglobin: an essential hemoprotein in striated muscle". J. Exp. Biol. 207 (Pt 20): 3441–6. doi:10.1242/jeb.01172. PMID 15339940. S2CID 26237923.