1	193	(2s)-4-(beta-alanylamino)-2-aminobutanoic acid	1.000
2	9YT	(2~{S})-4-acetamido-2-azanyl-butanoic acid	0.846
3	UU4	(2s)-2-amino-4-(L-serylamino)butanoic acid	0.800
4	UU5	(2s)-2-amino-4-[(oxoacetyl)amino]butanoic acid	0.786