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Catalysis of an oxidation-reduction (redox) reaction in which the hydrogen donor and acceptor are the same molecule, and no oxidized product appears. Catalysis of the reaction: a 3-oxo-delta(5)-steroid = a 3-oxo-delta(4)-steroid. Catalysis of an oxidation-reduction (redox) reaction in which the hydrogen donor and acceptor are the same molecule, one or more carbon-carbon double bonds in the molecule are rearranged, and no oxidized product appears.

View Gene Ontology (GO) Term

GO TERM SUMMARY

Name: steroid delta-isomerase activity
Acc: GO:0004769
Aspect: Molecular Function
Desc: Catalysis of the reaction: a 3-oxo-delta(5)-steroid = a 3-oxo-delta(4)-steroid.
Synonyms:
  • steroid D-isomerase activity
  • delta(5)-3-ketosteroid isomerase activity
  • steroid isomerase activity
  • delta5-3-ketosteroid isomerase activity
  • delta5(or delta4)-3-keto steroid isomerase activity
  • delta5-steroid isomerase activity
  • delta5-3-keto steroid isomerase activity
  • delta(5)-3-keto steroid isomerase activity
  • hydroxysteroid isomerase activity
  • delta5-3-oxosteroid isomerase activity
  • delta(5)-3-oxosteroid isomerase activity
  • delta(5)-steroid isomerase activity
  • delta5-ketosteroid isomerase activity
  • 3-oxosteroid isomerase activity
  • 3-oxosteroid delta5-delta4-isomerase activity
Proteins in PDR annotated with:
   This term: 19 [Search]
   Term or descendants: 19 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0004769 - steroid delta-isomerase activity (interactive image map)

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