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 5ivo A NA 0 NA NA NA NA PEPTIDE BINDING PROTEIN 03/21/16 BC2 nanobody VICUGNA PACOS vicugna pacos Braun, M.B., Stehle, T. 1.8 X-RAY DIFFRACTION 0.222 0.187 False True IGHV1 NA NA None None None None None