1	VBP	4-({3-[(2r)-2-amino-2-carboxyethyl]-2,6-dioxo-3,6-dihydropyrimidin-1(2h)-yl}methyl)benzoic acid	1.000
2	UBC	(S)-1-(2-amino-2-carboxyethyl)-3-(2-carboxybenzyl)pyrimidine-2,4-dione	0.778