1 DYT (2~{S})-2-chloranyl-3-(1~{H}-imidazol-5-yl)propanoic acid 1.000 2 MWQ 3-(1~{H}-imidazol-5-yl)propanoic acid 0.909 3 URO (2e)-3-(1h-imidazol-4-yl)acrylic acid 0.909 4 DHI D-histidine 0.833 5 ECD (4r)-4-(2-carboxyethyl)imidazolidin-2-iminium 0.833 6 HHI (2z)-3-(1h-imidazol-5-yl)-2-iminopropanoic acid 0.833 7 HIS Histidine 0.833 8 O66 3-[(4~{R})-5-oxidanylidene-1,4-dihydroimidazol-4-yl]propanoic acid 0.833 9 2HF 2-fluoro-L-histidine 0.769 10 B3U 2-amino-L-histidine 0.769 11 DI6 3-[(4s)-2,5-dioxoimidazolidin-4-yl]propanoic acid 0.769 12 E9V N-methyl-L-histidine 0.769 13 EI4 Enduracididine 0.769 14 HIC 4-methyl-histidine 0.769 15 HSK 3-hydroxy-L-histidine 0.769 16 MHS N1-methylated histidine 0.769 17 OHI 3-(2-oxo-2h-imidazol-4-yl)-L-alanine 0.769 18 U8S 3-[(2s)-2-hydroxy-2,3-dihydro-1h-imidazol-4-yl]-L-alanine 0.769 19 V5N (2s,3s)-2-azanyl-3-(1h-imidazol-5-yl)-3-oxidanyl-propanoic acid 0.769 20 HSO L-histidinol 0.750 21 HSV L-histidinal 0.750 22 AVI N,N-dimethyl-L-histidine 0.714 23 HOO (2~{S})-2-azanyl-3-[2,5-bis(oxidanylidene)imidazol-4-yl]propanoic acid 0.714 24 OGC Gamma-N-methyl-beta-oh-histidine 0.714 25 OYL 1-ethyl-L-histidine 0.714