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Information on EC 2.6.1.81 - succinylornithine transaminase

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EC Tree
     2 Transferases
         2.6 Transferring nitrogenous groups
             2.6.1 Transaminases
                2.6.1.81 succinylornithine transaminase
IUBMB Comments
A pyridoxal-phosphate protein. Also acts on N2-acetyl-L-ornithine and L-ornithine, but more slowly . In Pseudomonas aeruginosa, the arginine-inducible succinylornithine transaminase, acetylornithine transaminase (EC 2.6.1.11) and ornithine aminotransferase (EC 2.6.1.13) activities are catalysed by the same enzyme, but this is not the case in all species . This is the third enzyme in the arginine succinyltransferase (AST) pathway for the catabolism of arginine . This pathway converts the carbon skeleton of arginine into glutamate, with the concomitant production of ammonia and conversion of succinyl-CoA into succinate and CoA. The five enzymes involved in this pathway are EC 2.3.1.109 (arginine N-succinyltransferase), EC 3.5.3.23 (N-succinylarginine dihydrolase), EC 2.6.1.81 (succinylornithine transaminase), EC 1.2.1.71 (succinylglutamate-semialdehyde dehydrogenase) and EC 3.5.1.96 (succinylglutamate desuccinylase) [3,6].
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Word Map
The expected taxonomic range for this enzyme is: Bacteria, Eukaryota
Synonyms
sot, soat, n2-succinylornithine 5-aminotransferase, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
N2-succinyl-L-ornithine + 2-oxoglutarate = N-succinyl-L-glutamate 5-semialdehyde + L-glutamate
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