CATH Classification

Domain Context

CATH Clusters

Superfamily NAD(P)-binding Rossmann-like Domain
Functional Family NAD(P) transhydrogenase subunit alpha

Enzyme Information

7.1.1.1
Proton-translocating NAD(P)(+) transhydrogenase.
based on mapping to UniProt Q2RSB2
NADPH + NAD(+) + H(+)(Side 1) = NADP(+) + H(+)(Side 2) + NADH.
-!- The enzyme is a membrane bound proton-translocating pyridine nucleotide transhydrogenase that couples the reversible reduction of NADP by NADH to an inward proton translocation across the membrane. -!- In the bacterium Escherichia coli the enzyme provides a major source of cytosolic NADPH. -!- Detoxification of reactive oxygen species in mitochondria by glutathione peroxidases depends on NADPH produced by this enzyme. -!- Formerly EC 1.6.1.5.

UniProtKB Entries (1)

Q2RSB2
PNTAA_RHORT
Rhodospirillum rubrum ATCC 11170
NAD(P) transhydrogenase subunit alpha part 1

PDB Structure

PDB 1L7D
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal Structures of Transhydrogenase Domain I with and without Bound NADH
Prasad, G.S., Wahlberg, M., Sridhar, V., Yamaguchi, M., Hatefi, Y., Stout, C.D.
Biochemistry