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Results 1 - 2 of 2 for Heme
  1. ... important function of porphyrins is as components of heme, which is made from iron plus protoporphyrin. Hemoglobin ... made up of four globin proteins plus 4 heme groups. Oxygen binds to the iron in the ...
  2. ... cells. It is composed of a protein called heme, which binds oxygen. In the lungs, oxygen is ...