1XR2: Crystal Structure Of Oxidized T. Maritima Cobalamin-Independ Methionine Synthase Complexed With Methyltetrahydrofolate
reference: Cobalamin-Independent Methionine Synthase (MetE): A Face-to-Face Double Barrel That Evolved by Gene Duplication., Pejchal R, Ludwig ML, PLoS Biol 2005 Feb;3(2):e31. Epub 2004 Dec 28. PMID: 15630480

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