Porphyrins
A group of compounds containing the porphin structure, four pyrrole rings connected by methine bridges in a cyclic configuration to which a variety of side chains are attached. The nature of the side chain is indicated by a prefix, as uroporphyrin, hematoporphyrin, etc. The porphyrins, in combination with iron, form the heme component in biologically significant compounds such as hemoglobin and myoglobin.
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Tree Number(s): D03.383.129.578.840.500, D03.633.400.909.500, D04.345.783.500, D23.767.727
MeSH Unique ID: D011166
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