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... > Heterocyclic Compounds > Heterocyclic Compounds, Fused-Ring > Heterocyclic Compounds, 4 or More Rings > Tetrapyrroles > Porphyrins > Porphyrinogens > Uroporphyrinogens
... > Polycyclic Compounds > Macrocyclic Compounds > Tetrapyrroles > Porphyrins > Porphyrinogens > Uroporphyrinogens
... > Heterocyclic Compounds > Heterocyclic Compounds, 1-Ring > Azoles > Pyrroles > Tetrapyrroles > Porphyrins > Porphyrinogens > Uroporphyrinogens
Biological Factors > Pigments, Biological > Porphyrins > Porphyrinogens > Uroporphyrinogens

Preferred term

Uroporphyrinogens  

Type

  • Topical Descriptor

Broader concept

Entry terms

  • Uroporphyrinogen III

Note

  • porphyrins

Scope note

  • Porphyrinogens which are intermediates in heme biosynthesis. They have four acetic acid and four propionic acid side chains attached to the pyrrole rings. Uroporphyrinogen I and III are formed from polypyrryl methane in the presence of uroporphyrinogen III cosynthetase and uroporphyrin I synthetase, respectively. They can yield uroporphyrins by autooxidation or coproporphyrinogens by decarboxylation.

History note

  • 91(76); was see under PORPHYRINOGENS 1976-90

In other languages

URI

http://www.yso.fi/onto/mesh/D014577

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