1	PVH	Histidine-methyl-ester	1.000
2	HSO	L-histidinol	0.833
3	HSV	L-histidinal	0.833
4	DHI	D-histidine	0.769
5	HHI	(2z)-3-(1h-imidazol-5-yl)-2-iminopropanoic acid	0.769
6	HIA	L-histidine amide	0.769
7	HIS	Histidine	0.769
8	2HF	2-fluoro-L-histidine	0.714
9	A1AS0	5-selanyl-L-histidine	0.714
10	A1ASZ	5-sulfanyl-L-histidine	0.714
11	A1AZ2	3-methyl-D-histidine	0.714
12	A1I9G	3(S)-methyl-histidine	0.714
13	B3U	2-amino-L-histidine	0.714
14	EI4	Enduracididine	0.714
15	HIC	4-methyl-histidine	0.714
16	HSK	3-hydroxy-L-histidine	0.714
17	MHS	N1-methylated histidine	0.714
18	OHI	3-(2-oxo-2h-imidazol-4-yl)-L-alanine	0.714
19	V5N	(2s,3s)-2-azanyl-3-(1h-imidazol-5-yl)-3-oxidanyl-propanoic acid	0.714