1 05N (3r,4r)-4-hydroxy-3-methyl-L-proline 1.000 2 DPL 4-oxoproline 0.900 3 HYP 4-hydroxyproline 0.900 4 HZP (4s)-4-hydroxy-L-proline 0.900 5 UY7 (4s)-4-hydroxy-D-proline 0.900 6 UYA (4r)-4-hydroxy-D-proline 0.900 7 6IW (2s,4s)-1-methyl-4-oxidanyl-pyrrolidine-2-carboxylic acid 0.818 8 87I (2r,4r)-1-methyl-4-hydroxyl-pyrrolidine-2-carboxylic acid 0.818 9 POM Cis-5-methyl-4-oxoproline 0.818 10 2PC 3,4-dihydro-2h-pyrrolium-5-carboxylate 0.800 11 8LJ (2s)-2,3-dihydro-1h-pyrrole-2-carboxylic acid 0.800 12 DPR D-proline 0.800 13 PRO Proline 0.800 14 PYC Pyrrole-2-carboxylate 0.800 15 0XW (2s,4r)-4-hydroxy-1,1-dimethylpyrrolidinium-2-carboxylate 0.750 16 4OP (2s,4s)-2-carboxy-4-hydroxy-1,1-dimethylpyrrolidinium 0.750 17 BG5 5-hydroxyamino-3-methyl-pyrrolidine-2-carboxylic acid 0.750 18 PF0 3-hydroxy-2-methylbenzoic acid 0.750 19 1AB 1,4-dideoxy-1,4-imino-D-arabinitol 0.727 20 3BY 1-methyl-L-proline 0.727 21 3WX 2-methyl-L-proline 0.727 22 4FB (4s)-4-fluoro-L-proline 0.727 23 60P 3-methylthiophene-2-carboxylic acid 0.727 24 EDG 1,4-dideoxy-1,4-imino-L-arabinitol 0.727 25 EX8 (2~{R},3~{R},4~{S})-3-fluoranyl-4-oxidanyl-pyrrolidine-2-carbaldehyde 0.727 26 FP9 (4r)-4-fluoro-L-proline 0.727 27 G8X (2~{S},3~{R})-3-oxidanylpyrrolidine-2-carboxylic acid 0.727 28 HY3 3-hydroxyproline 0.727 29 IMR Iminoribitol 0.727 30 JKH 4-amino-proline 0.727 31 KLF (2~{S},4~{R})-4-oxidanylpyrrolidine-2-carboxamide 0.727 32 LDU Dideoxy-imino-lyxitol 0.727 33 MP8 (4r)-4-methyl-L-proline 0.727 34 PCA Pyroglutamic acid 0.727 35 PXU 2-hydroxy-L-proline 0.727 36 8WQ (2~{S},3~{R},4~{R})-3-(carboxycarbonyl)-4-oxidanyl-pyrrolidine-2-carboxylic acid 0.714 37 8GZ D-prolinol 0.700 38 PRI Pyrrolidine-2-carbaldehyde 0.700