porphyrin definition

  • noun:
    • Any of different organic substances containing four pyrrole rings, happening universally in protoplasm, and working as a metal-binding cofactor in hemoglobin, chlorophyll, and particular enzymes.
    • some of a course of heterocyclic compounds containing four pyrrole bands organized in a square; these are generally essential in biochemistry in a questionnaire with a metal atom inside main cavity (hemoglobin with metal, chlorophyll with magnesium, etc.).
    • some of various pigments distributed commonly in residing areas

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