CATH Classification

Domain Context

CATH Clusters

Superfamily NAD(P)-binding Rossmann-like Domain
Functional Family Short-chain dehydrogenase reductase

Enzyme Information

1.1.1.236
Tropinone reductase II.
based on mapping to UniProt P50163
Pseudotropine + NADP(+) = tropinone + NADPH.
-!- Represents, along with EC 1.1.1.206, a branch point in tropane alkaloid metabolism. -!- Tropine (the product of EC 1.1.1.206) is incorporated into hyoscyamine and scopolamine whereas pseudotropine (the product of EC 1.1.1.236) is the first specific metabolite on the pathway to the calystegines. -!- Both enzymes are always found together in any given tropane-alkaloid- producing species, have a common substrate, tropinone, and are strictly stereospecific.

UniProtKB Entries (1)

P50163
TRN2_DATST
Datura stramonium
Tropinone reductase 2

PDB Structure

PDB 2AE1
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal structures of two tropinone reductases: different reaction stereospecificities in the same protein fold.
Nakajima, K., Yamashita, A., Akama, H., Nakatsu, T., Kato, H., Hashimoto, T., Oda, J., Yamada, Y.
Proc.Natl.Acad.Sci.USA