dictionary help| porphyrins | medical dictionary |
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, haematoporphyrin, etc. The porphyrins, in combination with iron, form the haem component in biologically significant compounds such as haemoglobin and myoglobin.
(12 Dec 1998)
porphyrinogen carboxy-lyase, porphyrinogens, porphyrinopathy < Prev | Next > porphyrinuria, porphyrism, porphyrite
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