6DDD:
reference: cryoEM-Guided Development of Antibiotics for Drug-Resistant Bacteria., Belousoff MJ, Venugopal H, Wright A, Seoner S, Stuart I, Stubenrauch C, Bamert RS, Lupton DW, Lithgow T, ChemMedChem. 2019 Mar 5;14(5):527-531. doi: 10.1002/cmdc.201900042. Epub 2019 Feb, 12. PMID: 30667174

This OCA Structure page
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