>4fo2_S mol:protein length:98 Heat-labile enterotoxin IIB, B chainGASQFFKDNCNRITASLVEGVELTKYISDINNNTDGMYVVSSTGGVWRISRAKDYPDNVMTAEMRKIAMAAVLSGMRVNMCASPASSPNVIWAIELEA