putrescine + 2-oxoglutarate => 1-pyrroline + L-glutamate + H2O
putrescine + 2-oxoglutarate => 1-pyrroline + l-glutamate + h2o
putrescine + 2-oxoglutarate => 1-pyrroline + L-glutamate + H2O
putrescine + 2-oxoglutarate => 1-pyrroline + l-glutamate + h2o