>2r1w_B mol:protein length:222 Fab, antibody fragment (IgG1k), heavy chainEVKLVESGGGLVQSGGSLRLSCATSGFTFTDYYMSWVRQPPGKALEWLGFIRNKANGYTTEYSPSVKGRFTISRDNSQSILYLQMNTLRAEDSATYYCARDHDGYYERFSYWGQGTLVTVSAAKTTPPSVYPLAPGSAAQTNSMVTLGCLVKGYFPEPVTVTWNSGSLSSGVHTFPAVLQSDLYTLSSSVTVPSSTWPSETVTCNVAHPASSTKVDKKIVPR