CATH Classification

Domain Context

CATH Clusters

Superfamily Acyl-CoA dehydrogenase/oxidase, N-terminal domain
Functional Family

Enzyme Information

1.14.14.12
3-hydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione monooxygenase.
based on mapping to UniProt Q0S811
3-hydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione + FMNH(2) + O(2) = 3,4-dihydroxy-9,10-secoandrosta-1,3,5(10)-triene-9,17-dione + FMN + H(2)O.
-!- This bacterial enzyme participates in the degradation of several steroids, including cholesterol and testosterone. -!- It can use either FADH or FMNH(2) as flavin cofactor. -!- The enzyme forms a two-component system with a reductase (HsaB) that utilizes NADH to reduce the flavin, which is then transferred to the oxygenase subunit.

UniProtKB Entries (1)

Q0S811
HSAA_RHOJR
Rhodococcus jostii RHA1
Flavin-dependent monooxygenase, oxygenase subunit HsaA

PDB Structure

PDB 2RFQ
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structure of 3-HSA hydroxylase, oxygenase from Rhodococcus sp. RHA1.
Chang, C., Skarina, T., Kagan, O., Savchenko, A., Edwards, A.M., Joachimiak, A.
To be Published