Porphyrin meaning

pôr'fə-rĭn
Any of various organic compounds containing four pyrrole rings, occurring universally in protoplasm, and functioning as a metal-binding cofactor in hemoglobin, chlorophyll, and certain enzymes.
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Any of a group of pyrrole derivatives, found in cytoplasm, that combine with iron and magnesium to form heme and chlorophyll, respectively.
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Any of various organic compounds containing four pyrrole rings, occurring universally in protoplasm, and functioning as a metal-binding cofactor in hemoglobin, chlorophyll, and certain enzymes.
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Any of various organic pigments containing four pyrrole rings bonded to one another. The rings form the corners of a large flat square, in the middle of which is a cavity that often contains a metal atom. Porphyrins occur universally in protoplasm and function with bound metals such as iron in hemoglobin and magnesium in chlorophyll.
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(organic chemistry) Any of a class of heterocyclic compounds containing four pyrrole rings arranged in a square; they are important in biochemistry in a form with a metal atom in the central cavity (hemoglobin with iron, chlorophyll with magnesium, etc.).
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Origin of porphyrin

  • Greek porphurā shellfish yielding purple dye, purple –in
    From American Heritage Dictionary of the English Language, 5th Edition
  • From German Porphyrin, shortened from Hämatoporphyrin (“haematoporphyrin").
    From Wiktionary