Ornithine aminotransferase

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ornithine aminotransferase
Identifiers
EC number 2.6.1.13
CAS number 9030-42-6
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum
Gene Ontology AmiGO / EGO
ornithine aminotransferase
Identifiers
Symbol OAT
Entrez 4942
HUGO 8091
OMIM 258870
RefSeq NM_000274
UniProt P04181
Other data
Locus Chr. 10 q26

Ornithine aminotransferase is an enzyme involved in the ultimate formation of proline from ornithine. Ornithine aminotransferase forms the initial intermediate in this process. It catalyzes the reverse reaction as well, and is therefore essential in creating ornithine from the starting substrate proline. Glutamate acts as the amine donor for ornithine aminotransferase, forming α-ketoglutarate. In the reverse direction, α-ketoglutarate accepts the amine group, forming glutamate and leading to the ultimate conversion of proline to ornithine. A deficiency of this enzyme causes ornithine aminotransferase deficiency, also known as gyrate atrophy of choroid and retina.[1]

Ornithine aminotransferase catalyzes the following reaction:

  • L-ornithine + a 2-oxo acid = L-glutamate 5-semialdehyde + an L-amino acid

See also[edit]

References[edit]

  1. ^ "Gyrate atrophy of the choroid and retina". National Institutes of Health. Retrieved 2012-08-23. 

External links[edit]