>8r1d_D mol:protein length:121 SD1-3 Fab Heavy ChainQVQLVESGGGLVQPGGSLRLSCTASGVTFSSYAMSWVRQAPGKGLEWVSGISGSGDSTYYADSVKGRFTISRDNSKNTLYLQMNSLRVEDTAVYYCATHYCSGGSCPFDYWGQGTLVTVSS