Myoglobin and Hemoglobin

[morganm]

Can someone explain what Lavelle was discussing regarding heme complexes, myoglobin, and hemoglobin? I didn't write down great notes for this part.

[305892961]

A myoglobin is a iron bound to a porphyrin ligand, called a heme complex. Which is then bonded to a protein and this constitutes a myoglobin. A hemoglobin is then made up of 4 myoglobins.

[CristinaG]

Myoglobin and hemoglobin are oxygen binding proteins. Hemoglobin is found in the blood and contains 4 heme groups. Myoglobin is found in muscles and contains only one heme group. Hemoglobin often passes off oxygen to myoglobin in oxygen deficient muscle tissue.