6FTB:
reference: The role of the jaw subdomain of peptidoglycan glycosyltransferases for lipid II polymerization., Punekar AS, Samsudin F, Lloyd AJ, Dowson CG, Scott DJ, Khalid S, Roper DI, Cell Surf. 2018 Jun;2:54-66. doi: 10.1016/j.tcsw.2018.06.002. PMID: 30046666

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