protoheme

/ˈproʊtoʊˌhim/
noun
  1. A type of heme (an iron-containing molecule) found in certain proteins like hemoglobin, important for carrying oxygen in the blood.
    • In the lab, they synthesized protoheme to test its chemical properties.
    • The scientist studied how protoheme binds to oxygen in red blood cells.
    • Protoheme is essential for the function of many enzymes in the body.
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