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 2xa8 H L 0 NA NA NA NA IMMUNE SYSTEM 03/30/10 Crystal structure of the Fab domain of omalizumab at 2.41A HOMO SAPIENS homo sapiens homo sapiens Huang, C.H., Hung, F.H.A., Lim, C., Chang, T.W., Ma, C. 2.42 X-RAY DIFFRACTION 0.269 0.221 False False IGHV3 IGKV1 Kappa None None None None None