Device RemovalProsthesis-Related InfectionsPacemaker, ArtificialDefibrillators, ImplantableCardiac Resynchronization Therapy DevicesEndocarditisThoracic NeoplasmsPeriodontal PocketModels, MolecularBinding SitesCrystallography, X-RayProtein ConformationProtein BindingGingival PocketAmino Acid SequenceMolecular Sequence DataProtein Structure, TertiaryLigandsCatalytic DomainMutagenesis, Site-DirectedStructure-Activity RelationshipProtein Structure, SecondarySubstrate SpecificityHydrogen BondingAmino Acid Substitution