1	UU4	(2s)-2-amino-4-(L-serylamino)butanoic acid	1.000
2	193	(2s)-4-(beta-alanylamino)-2-aminobutanoic acid	0.800
3	9YT	(2~{S})-4-acetamido-2-azanyl-butanoic acid	0.786
4	UU5	(2s)-2-amino-4-[(oxoacetyl)amino]butanoic acid	0.733
5	UM2	(2s)-2-amino-N-butyl-propanamide	0.714
6	58B	L-alanyl-D-alpha-glutamine	0.706