>3kj4_B mol:protein length:219 Fab fragment 1D9 light chainDIVMSQSPSSLAVSAGEKVTMSCKSSQSLLNSRNRKNYLAWYQQKPGQSPKPLIYWASTRESGVPDRFTGSGSGTDFTLTISSVQAEDLAVYYCMQSYNLFTFGSGTKLEIKRADAAPTVSIFPPSSEQLTSGGASVVCFLNNFYPKDINVKWKIDGSERQNGVLNSWTDQDSKDSTYSMSSTLTLTKDEYERHNSYTCEATHKTSTSPIVKSFNRNEC