>4rgm_C mol:protein length:223 20B1 heavy chainQIQLVQSGPELKKPGETVRISCKASGYIFTIAGIQWVQKMPGRGLRWIGWINTHSGVPEYAEEFKGRFAFSLETSARTAYLQISNLKDEDTATYFCARIYYGNNGGVMDYWGQGTSVTVSSAKTTPPSVYPLAPGSAAQTNSMVTLGCLVKGYFPEPVTVTWNSGSLSSGVHTFPAVLQSDLYTLSSSVTVPSSTWPSETVTCNVAHPASSTKVDKKIVPRDC