>7k93_I mol:protein length:251 2B7 single chain fab variable regionSNAEVQLQQSGPELVKPGASVKMSCKASGCTLTNCFMHWMKQKPGQDLEWIGYINPYNDMTKYSENFKGKATLTSDKSSSTAFMELSSLTSEDSAVYYCARGYLLRTGCFDYWGQGTTLTVSSGGSGGGSGGGSGGGSGGNIVLTQSPASLAVSLGQRATISCRASESVDSYGYSFMHWYQQKPGQPPKVLIYLASNLESGVPARFSGSGSRTDFTLTIDPVEADDAATYYCQQNNENPLTFGAGTKLELK