Table 2.

Substrate specificity of purified recombinant Ht-YgjG

Substrate	Relative activity (%)a
Amino group donorb
Putrescine	100
Cadaverine	97
Spermidine	32
Agmatine	2
L-Ornithine	2
Amino group acceptorb
2-OG	100
α-ketobutyric acid	38
Pyruvic acid	12

^a The PATase activity with 2-OG as amino group acceptor was arbitrary defined as 100% relative activity. ^b 2-OG was used as amino acceptor with different polyamines and amino acid as amino group donors, and putrescine was used as amino group donor with different amino acceptors at final concentrations of 10 mM, respectively.