2BBK:
reference: Refined crystal structure of methylamine dehydrogenase from Paracoccus denitrificans at 1.75 A resolution., Chen L, Doi M, Durley RC, Chistoserdov AY, Lidstrom ME, Davidson VL, Mathews FS, J Mol Biol 1998 Feb 13;276(1):131-49. PMID: 9514722

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