Klebsiella pneumoniaeKlebsiella InfectionsEscherichia coli ProteinsKlebsiella oxytocaEscherichia coliEscherichia coli InfectionsBacterial ProteinsGenes, BacterialMolecular Sequence DataPlasmidsDNA, Bacterialbeta-LactamasesEscherichia coli O157Base SequenceAmino Acid SequenceCloning, MolecularEnterobacteriaceaeMutationEscherichiaMicrobial Sensitivity TestsEscherichia coli K12Gene Expression Regulation, BacterialEnterobacterOperonAdhesins, Escherichia coliKineticsbeta-Lactam ResistanceConjugation, GeneticChromosomes, BacterialCarbapenemsBacterial Outer Membrane ProteinsRNA, BacterialGram-Negative BacteriaCulture MediaRecombinant ProteinsDrug Resistance, BacterialEnterobacteriaceae InfectionsGenesDrug Resistance, Multiple, Bacterialbeta-LactamsGenetic Complementation TestRestriction MappingColiphagesFimbriae, BacterialNitrogenaseSequence Homology, Amino AcidSequence Analysis, DNAEnterobacter aerogenesNitrogen FixationCephalosporinsLiver AbscessBinding SitesTemperatureCross InfectionBacterial AdhesionFecesUrinary Tract InfectionsElectrophoresis, Polyacrylamide GelSubstrate SpecificityPolymerase Chain ReactionCeftazidimeTranscription, GeneticEnterotoxigenic Escherichia coliPolysaccharides, BacterialSpecies SpecificityShiga-Toxigenic Escherichia coliO AntigensProteusBacterial ToxinsDNA Transposable ElementsElectrophoresis, Gel, Pulsed-FieldMolecular WeightChloramphenicolAnti-Bacterial AgentsAnaerobiosisbeta-GalactosidaseEnterotoxinsFimbriae ProteinsGenes, RegulatorEnteropathogenic Escherichia coliChromosome MappingSerotypingProteus mirabilisBacteriological TechniquesHydrogen-Ion ConcentrationProtein ConformationColony Count, MicrobialTransformation, BacterialVirulencePorinsAmpicillinBacteremiaCarrier ProteinsRecombinant Fusion ProteinsModels, MolecularProtein BindingMutagenesis, Site-DirectedTransduction, GeneticDNA-Directed RNA PolymerasesMembrane Transport Proteins