PenicillinsPenicillin GPenicillin VPenicillin ResistancePenicillin G ProcainePenicillin AmidasePenicillin G BenzathineDrug DiscoveryAnti-Bacterial AgentsMicrobial Sensitivity TestsPenicillin-Binding ProteinsStreptococcus pneumoniaePenicillinaseMuramoylpentapeptide CarboxypeptidaseAmpicillinPeptidyl TransferasesHexosyltransferasesCephalosporinsPneumococcal InfectionsStreptococcal InfectionsNeisseria gonorrhoeaeCloxacillinDrug HypersensitivityGonorrheaAcremoniumErythromycinbeta-LactamsDrug Resistance, MicrobialStreptococcusCeftriaxoneCefotaximeCephaloridinePharyngitisSpectinomycinbeta-LactamasesBacterial ProteinsDrug Resistance, BacterialPenicilliumCarbenicillinCephalothinOxacillinGentamicinsLactamsTetracyclineTonsillitisPeptidoglycanEndocarditis, BacterialMolecular Sequence DataNeurosyphilisStaphylococcusProteusClindamycinBacteriaPenicillanic AcidStreptomycinProbenecidSerotypingEscherichia coliAmoxicillinCulture MediaSyphilisChloramphenicolDrug DesignSequence Analysis, DNACefuroximeViridans StreptococciDicloxacillinStaphylococcus aureusMacrolidesMethicillinStreptococcus pyogenesCarrier ProteinsStreptococcus sanguisNeisseria meningitidisAmidohydrolasesPhenylacetatesCefiximeHistory, 20th CenturyTicarcillinAnti-Infective AgentsMutationMeningitis, PneumococcalStreptococcus agalactiaeCarboxypeptidasesSulfadiazineVancomycinPneumonia, PneumococcalAspergillus nidulans2-Aminoadipic AcidPeptide SynthasesAmino Acid SequenceDrug Evaluation, PreclinicalEnterococcus faecalisAminoacyltransferasesSarcinaCephalexinAmpicillin ResistanceComputational BiologyAlgorithmsSmall Molecule Libraries