1R77:
reference: Cell wall-targeting domain of glycylglycine endopeptidase distinguishes among peptidoglycan cross-bridges., Lu JZ, Fujiwara T, Komatsuzawa H, Sugai M, Sakon J, J Biol Chem. 2006 Jan 6;281(1):549-58. Epub 2005 Oct 28. PMID: 16257954

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