2VD9:
reference: Structures of an alanine racemase from Bacillus anthracis (BA0252) in the presence and absence of (R)-1-aminoethylphosphonic acid (L-Ala-P)., Au K, Ren J, Walter TS, Harlos K, Nettleship JE, Owens RJ, Stuart DI, Esnouf RM, Acta Crystallogr Sect F Struct Biol Cryst Commun. 2008 May 1;64(Pt, 5):327-33. Epub 2008 Apr 5. PMID: 18453697

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