>5kem_J mol:protein length:107 c13C6 variable Fab domain light chainDIVMTQSPLSLSTSVGDRVSLTCKASQNVGTAVAWYQQKPGQSPKLLIYSASNRYTGVPDRFTGSGSGTDFTLTISNMQSEDLADYFCQQYSSYPLTFGAGTKLELR