2.6.1.113 1,2-diaminoethane + pyruvate 38% of the activity with beta-alanine 2.6.1.113 1,6-diaminohexane + pyruvate 87% of the activity with beta-alanine 2.6.1.113 1,7-diaminoheptane + pyruvate 92% of the activity with beta-alanine 2.6.1.113 1,8-diaminooctane + pyruvate 55% of the activity with beta-alanine 2.6.1.113 beta-alanine + pyruvate best substrate 2.6.1.113 cadaverine + pyruvate 12% of the activity with beta-alanine 2.6.1.113 additional information one of the two amino groups of 1,2-diaminoethane, putrescine and cadaverine transaminates to pyruvate. The transamination between putrescine and pyruvate proceeds by a ping-pong bi bi mechanism. No substrate: 1,3-diaminopropane 2.6.1.113 putrescine + pyruvate 55% of the activity with beta-alanine