CATH Classification

Domain Context

CATH Clusters

Superfamily Isopropylmalate Dehydrogenase
Functional Family Isocitrate dehydrogenase [NADP]

Enzyme Information

1.1.1.42
Isocitrate dehydrogenase (NADP(+)).
based on mapping to UniProt P33198
Isocitrate + NADP(+) = 2-oxoglutarate + CO(2) + NADPH.
-!- Unlike EC 1.1.1.41, oxalosuccinate can be used as a substrate. -!- In eukaryotes, isocitrate dehydrogenase exists in two forms: an NAD(+)-linked enzyme found only in mitochondria and displaying allosteric properties, and a non-allosteric, NADP(+)-linked enzyme that is found in both mitochondria and cytoplasm. -!- The enzyme from some species can also use NAD(+) but much more slowly.

UniProtKB Entries (1)

P33198
IDHP_PIG
Sus scrofa
Isocitrate dehydrogenase [NADP], mitochondrial

PDB Structure

PDB 1LWD
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Crystal Structure of Porcine Mitochondrial NADP+-Dependent Isocitrate Dehydrogenase Complexed with Mn2+ and Isocitrate
Ceccarelli, C., Grodsky, N.B., Ariyaratne, N., Colman, R.F., Bahnson, B.J.
J.Biol.Chem.