Heme

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Heme is the "color-furnishing portion of hemoglobin. It is found free in tissues and as the prosthetic group in many hemeproteins."[1]

Porphyrias are metabolic diseases in the heme biosynthetic pathway characterized by buildup of porphyrin precursors such as porphobilinogen (PBG).

References

  1. ↑ Anonymous, (2009) Heme (English). Medical Subject Headings. U.S. National Library of Medicine.
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