1RVU:
reference: Serine Hydroxymethyltransferase: Role of Glu75 and Evidence that Serine Is Cleaved by a Retroaldol Mechanism., Szebenyi DM, Musayev FN, Di Salvo ML, Safo MK, Schirch V, Biochemistry 2004 Jun 8;43(22):6865-76. PMID: 15170323

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