CobamidesVitamin B 12Ethanolamine Ammonia-LyaseMethylmalonyl-CoA MutasePropanediol Dehydratase5-Methyltetrahydrofolate-Homocysteine S-MethyltransferaseHomocystinuriaHydroxocobalaminClostridium sticklandiiIntramolecular TransferasesMusculocutaneous NerveAmmonia-LyasesMethanosarcina barkeriMethyl ChlorideCorrinoidsLactobacillus leichmanniiAmino Acid IsomerasesClostridiumS-AdenosylmethionineVitamin B 12 DeficiencyEnzyme ReactivatorsMethyltransferasesMethylmalonic AcidTrypan BlueAlkyl and Aryl TransferasesMethionineDeoxyadenosinesPropylene GlycolVitamin B 6Amino Acid Metabolism, Inborn ErrorsIsomerasesKineticsCoenzymesHomocysteineCobaltMethylationSpectrophotometryElectron Spin Resonance SpectroscopyFree RadicalsBacterial ProteinsMolecular StructureModels, ChemicalCatalysisEscherichia coliMolecular Sequence DataAmino Acid Sequence