1 T2C (2s)-1,3-thiazolidine-2-carboxylic acid 1.000 2 2PC 3,4-dihydro-2h-pyrrolium-5-carboxylate 0.778 3 8LJ (2s)-2,3-dihydro-1h-pyrrole-2-carboxylic acid 0.778 4 A1CAB (2s)-3,4-dihydro-2h-pyrrole-2-carboxylic acid 0.778 5 C21 Thiophene-2-carboxylic acid 0.778 6 DPR D-proline 0.778 7 PRO Proline 0.778 8 PYC Pyrrole-2-carboxylate 0.778 9 UJD 1,3-dithiolane-2-carboxylic acid 0.778 10 UJM (2s)-thiolane-2-carboxylic acid 0.778 11 UJP (2r)-thiolane-2-carboxylic acid 0.778 12 XVT (2r)-2-methyl-1,3-thiazolidine 0.750 13 5XB (2~{R},4~{R})-1,3-thiazolidine-2,4-dicarboxylic acid 0.727 14 3BY 1-methyl-L-proline 0.700 15 3WX 2-methyl-L-proline 0.700 16 4FB (4s)-4-fluoro-L-proline 0.700 17 60P 3-methylthiophene-2-carboxylic acid 0.700 18 6PC Pyridine-2-carboxylic acid 0.700 19 7YO (2r)-5-oxidanylidenepyrrolidine-2-carboxylic acid 0.700 20 9E9 5-chloro thiophene-2-carboxylic acid 0.700 21 9TK 1-methylimidazole-2-carboxylic acid 0.700 22 CPI 6-carboxypiperidine 0.700 23 DPL 4-oxoproline 0.700 24 FP9 (4r)-4-fluoro-L-proline 0.700 25 G8X (2~{S},3~{R})-3-oxidanylpyrrolidine-2-carboxylic acid 0.700 26 GIW 1,3-dithiane-2-carboxylic acid 0.700 27 HY3 3-hydroxyproline 0.700 28 HYP 4-hydroxyproline 0.700 29 HZP (4s)-4-hydroxy-L-proline 0.700 30 JKH 4-amino-proline 0.700 31 MP8 (4r)-4-methyl-L-proline 0.700 32 PCA Pyroglutamic acid 0.700 33 PXU 2-hydroxy-L-proline 0.700 34 UY7 (4s)-4-hydroxy-D-proline 0.700 35 UYA (4r)-4-hydroxy-D-proline 0.700 36 VGL Pyrazine-2-carboxylic acid 0.700 37 XRE 5-hydroxyproline 0.700 38 YCP (2s)-piperidine-2-carboxylic acid 0.700