1 XPC (3s,4r)-4-aminopyrrolidine-3-carboxylic acid 1.000 2 PKN 1h-pyrrole-3-carboxylic acid 0.889 3 9FB (1~{S},2~{R})-2-azanylcyclopentane-1-carboxylic acid 0.800 4 XCP (1s,2s)-2-aminocyclopentanecarboxylic acid 0.800 5 XZP (1r,2r)-2-aminocyclopentane-1-carboxylic acid 0.800 6 4SV 3-aminopyridine-4-carboxylic acid 0.727 7 BE2 2-aminobenzoic acid 0.727 8 E6F (1~{S},2~{S})-2-azanylcyclohexane-1-carboxylic acid 0.727 9 IQ0 Cyclopentanecarboxylic acid 0.700 10 TX0 Thiophene-3-carboxylic acid 0.700 11 XH7 (3r)-thiolane-3-carboxylic acid 0.700