pdb Hchain Lchain model antigen_chain antigen_type antigen_het_name antigen_name short_header date compound organism heavy_species light_species antigen_species authors resolution method r_free r_factor scfv engineered heavy_subclass light_subclass light_ctype affinity delta_g affinity_method temperature pmid 2yk1 H L 0 H Hapten NCT (S)-3-(1-METHYLPYRROLIDIN-2-YL)PYRIDINE IMMUNE SYSTEM 05/25/11 Structure of human anti-nicotine Fab fragment in complex with nicotine HOMO SAPIENS homo sapiens homo sapiens homo sapiens Tars, K., Kotelovica, S., Lipowsky, G., Bauer, M., Beerli, R., Bachmann, M., Maurer, P. 1.85 X-RAY DIFFRACTION 0.26434 0.22446 False True IGHV4 IGLV1 Lambda 7.40E-09 -11.09 Other NA 22079050