MethionineLeucine ZippersMethionine Sulfoxide ReductasesMethionine Adenosyltransferase5-Methyltetrahydrofolate-Homocysteine S-MethyltransferaseAmino AcidsS-AdenosylmethionineMethionyl AminopeptidasesLeucyl AminopeptidaseMolecular Sequence DataAmino Acid SequenceIsoleucineKeto AcidsHomocysteineAmino Acids, SulfurCystathionineValineAminopeptidasesKineticsMethionine SulfoximineBase SequenceEnkephalin, MethionineLeucine DehydrogenaseCarbon IsotopesEscherichia coliNorleucineCystineOxidation-ReductionMutationAmino Acids, Branched-ChainProtein BiosynthesisEthionineS-AdenosylhomocysteineVitamin B 12CysteinePhenylalanineMethionine-tRNA LigaseLiverOxidoreductasesSulfur RadioisotopesNutritional RequirementsSulfurBasic-Leucine Zipper Transcription FactorsBetaine-Homocysteine S-MethyltransferaseCarbon RadioisotopesThionucleosidesCystathionine beta-SynthaseAmino Acids, EssentialMethylationNitrogenLeucine Transaminase2-Isopropylmalate SynthaseDietary ProteinsFolic AcidGlycine N-MethyltransferaseLysineElectrophoresis, Polyacrylamide GelGlycineMutagenesis, Site-DirectedMolecular WeightDietBinding SitesSequence Homology, Amino AcidSelenomethionineProteinsVitamin UGlutamineBacterial ProteinsThreonineMethyltransferasesTetrahydrofolatesAlanineModels, MolecularRecombinant ProteinsHomocystinuriaThioglycosidesCell LineStructure-Activity RelationshipTritiumBetaineProtein ConformationHyperhomocysteinemiaProtein BindingCarbon-Oxygen LyasesTransaminasesSubstrate SpecificityCholineCulture MediaAmino Acid SubstitutionCholine DeficiencyPeptidesHomocystineChloraminesFerredoxin-NADP ReductaseRNA, MessengerLeucineCell-Free SystemEnzyme RepressionProlineCaseins