3D2O:
reference: Zinc-independent folate biosynthesis: genetic, biochemical, and structural investigations reveal new metal dependence for GTP cyclohydrolase IB., Sankaran B, Bonnett SA, Shah K, Gabriel S, Reddy R, Schimmel P, Rodionov DA, de Crecy-Lagard V, Helmann JD, Iwata-Reuyl D, Swairjo MA, J Bacteriol. 2009 Nov;191(22):6936-49. Epub 2009 Sep 18. PMID: 19767425

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