heme b haem b molecule. heme is an essential component of hemoglobin, myoglobin, cytochrome, catalase and other metalloproteins.

heme haem molecule an essential component hemoglobin myoglobin cytochrome catalase other metalloproteins blood iron ferrous porphyrin metalloprotein hemoprotein oxygenase spleen red cell erythrocyte bilirubin atoms atomic molecular compound composition chemical chemistry structure formula line drawing skeletal flat icon