Putrescine aminotransferase

Putrescine aminotransferase (, 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. This enzyme catalyses the following chemical reaction


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

This enzyme is a pyridoxal-phosphate protein.