>8b50_L mol:protein length:219 Fab fragment K12F9-22 - light chainDIELTQSPSSVPVTLGESVSISCRSSTSLLHSSGKHRLYWFLQRPGQSPQLLIYYVSNLASGVSDRFSGSGSGTDFTLRISRVEAGDFGVYYCLQSLEYPFTFGSGTKLEIKRTVAAPSVFIFPPSDEQLKSGTASVVCLLNNFYPREAKVQWKVDNALQSGNSQESVTEQDSKDSTYSLSSTLTLSKADYEKHKVYACEVTHQGLSSPVTKSFNRGEC