>7m42_B mol:protein length:229 REGN10989 antibody Fab fragment heavy chainQVQLVQSGAEVKKPGASVKVSCKASGYIFTGYYMHWVRQAPGQGLEWMGWINPNSGGANYAQKFQGRVTLTRDTSITTVYMELSRLRFDDTAVYYCARGSRYDWNQNNWFDPWGQGTLVTVSSASTKGPSVFPLAPSSKSTSGGTAALGCLVKDYFPEPVTVSWNSGALTSGVHTFPAVLQSSGLYSLSSVVTVPSSSLGTQTYICNVNHKPSNTKVDKKVEPKSCDKT