>5kem_G mol:protein length:121 BDBV91 variable Fab domain heavy chainQVQLVQSGAELKPPGASVKVSCKPSGYTFTDYYIHWVRQAPGQGLEWMGWINPKSGETHYAQKFRGWVTLTRDTSISTTYMDLTRLKSDDTAVYFCARGDLETTIFFYNAVDVWGQGTLVT