Putrescine aminotransferase

Putrescine aminotransferase
Identifiers
EC number 2.6.1.82
CAS number 98982-73-1
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Putrescine aminotransferase (EC 2.6.1.82, putrescine-alpha-ketoglutarate transaminase, YgjG, putrescine:alpha-ketoglutarate aminotransferase, PAT, putrescine:2-oxoglutarate aminotransferase, putrescine transaminase) is an enzyme with systematic name butane-1,4-diamine:2-oxoglutarate aminotransferase.[1][2][3] This enzyme catalyses the following chemical reaction

putrescine + 2-oxoglutarate 1-pyrroline + L-glutamate + H2O (overall reaction)
(1a) putrescine + 2-oxoglutarate 4-aminobutanal + L-glutamate
(1b) 4-aminobutanal 1-pyrroline + H2O (spontaneous)

This enzyme is a pyridoxal-phosphate protein.

References

  1. Prieto-Santos, M.I.; Martin-Checa, J.; Balaña-Fouce, R.; Garrido-Pertierra, A. (1986). "A pathway for putrescine catabolism in Escherichia coli". Biochim. Biophys. Acta. 880 (2-3): 242–244. doi:10.1016/0304-4165(86)90085-1. PMID 3510672.
  2. Samsonova, N.N.; Smirnov, S.V.; Novikova, A.E.; Ptitsyn, L.R. (2005). "Identification of Escherichia coli K12 YdcW protein as a γ-aminobutyraldehyde dehydrogenase". FEBS Lett. 579: 4107–4112. doi:10.1016/j.febslet.2005.06.038. PMID 16023116.
  3. Samsonova, N.N.; Smirnov, S.V.; Altman, I.B.; Ptitsyn, L.R. (2003). "Molecular cloning and characterization of Escherichia coli K12 ygjG gene". BMC Microbiol. 3 (1): 2–2. PMID 12617754.
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