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 4kaq H L 0 NA NA NA NA IMMUNE SYSTEM 04/22/13 Structure of rituximab Fab HOMO SAPIENS, MUS MUSCULUS homo sapiens, mus musculus homo sapiens, mus musculus Bzymek, K.P., Williams, J.C. 2.48 X-RAY DIFFRACTION 0.230 0.180 False True IGHV1 IGKV4 Kappa None None None None None