1Y4I:
reference: Structure of Citrobacter freundii L-methionine gamma-lyase., Mamaeva DV, Morozova EA, Nikulin AD, Revtovich SV, Nikonov SV, Garber MB, Demidkina TV, Acta Crystallograph Sect F Struct Biol Cryst Commun. 2005 Jun 1;61(Pt, 6):546-9. Epub 2005 Jun 1. PMID: 16511092

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