1	QMM	N,N-dimethyl-L-glutamine	1.000
2	1HB	(4s)-4-amino-5-hydroxy-N,N-dimethylpentanamide	0.917
3	MEQ	N5-methylglutamine	0.917
4	85G	N-ethyl-L-glutamine	0.846
5	85J	N-propyl-L-glutamine	0.786
6	A1IM7	C-methylamino-glutamic acid	0.769
7	A1L4B	(2s)-2-azanyl-5-nitroso-5-oxidanylidene-pentanoic acid	0.769
8	HGA	Glutamine hydroxamate	0.769
9	ORT	(4~{S})-4-azanyl-5-oxidanylidene-pentanehydrazide	0.769
10	A1AUG	5-oxo-L-norvaline	0.750
11	AA4	2-amino-5-hydroxypentanoic acid	0.750
12	5KJ	N~5~-(N-hydroxycarbamimidoyl)-N~5~-methyl-L-ornithine	0.733
13	9R7	L-gamma-glutamylglycine	0.733
14	4VI	(2z,4e)-5-carbamimidamido-2-iminopent-4-enoic acid	0.714
15	AR7	Amino{[(4s)-4-amino-5,5-dihydroxypentyl]amino}methaniminium	0.714
16	ARG	Arginine	0.714
17	CIR	Citrulline	0.714
18	DAR	D-arginine	0.714
19	FH7	N^5^-formyl-N^5^-hydroxy-D-ornithine	0.714
20	FHO	N^5^-formyl-N^5^-hydroxy-L-ornithine	0.714
21	GND	2-amino-5-guanidino-pentanoic acid	0.714
22	IAR	(2e)-5-[(diaminomethylidene)amino]-2-iminopentanoic acid	0.714
23	ILO	N5-iminoethyl-L-ornithine	0.714
24	ORQ	N~5~-acetyl-L-ornithine	0.714
25	SCI	L-thiocitrulline	0.714