Table 1. Substrate specificity of Cr-DapL using four amino donors.

Amino Donor	Relative Activity (%)	Amino Acceptor	Relative Activity (%)
l,l-DAP	100	2-Ketoglutarate	100
meso-DAP	0	Pyruvate	0
l-Lysine	0	Prephenate	0
l-Ornithine	0	Oxaloacetate	0
		Oxovelarate	0

Relative substrate specificity of Cr-DapL using various amino donors. The assay measured the production of dihyrdoquinazolium using the OAB assay at 400 nm using 0.5 mM amino donor and 2 mM 2-oxoglutarate. Relative substrate specificity of Cr-DapL using various amino acceptors. The assay measured the production of dihyrdoquinazolium using the OAB assay at 400 nm using 2 mM of each acceptor and 0.5 mM of l,l-DAP.