1	9R7	L-gamma-glutamylglycine	1.000
2	3GC	Gamma-glutamylcysteine	0.875
3	9R4	D-gamma-glutamyl-2-methyl-L-alanine	0.875
4	85G	N-ethyl-L-glutamine	0.857
5	4JK	(S)-2-amino-5-(2-hydroxyacetimidamido)pentanoic acid	0.800
6	85J	N-propyl-L-glutamine	0.800
7	WT2	(S)-2-amino-5-(2-oxoacetimidamido)pentanoic acid	0.800
8	MEQ	N5-methylglutamine	0.786
9	KSN	(2~{S})-2-[[(4~{S})-4-azanyl-5-oxidanyl-5-oxidanylidene-pentanoyl]amino]pentanedioic acid	0.737
10	ILO	N5-iminoethyl-L-ornithine	0.733
11	ORQ	N~5~-acetyl-L-ornithine	0.733
12	QMM	N,N-dimethyl-L-glutamine	0.733
13	NLY	N-(4-aminobutyl)glycine	0.714
14	R0K	(2~{S})-2-[[(4~{S})-4-azanyl-5-oxidanyl-5-oxidanylidene-pentanoyl]amino]hexanedioic acid	0.700