Conflicts of Interest The authors declare no conflicts of interest. Data Availability Statement Crystallographic data for compound 8 produced by CtdE and PldCG61S have been deposited at the Cambridge Crystallographic Data Centre (CCDC) under deposition numbers 2521192 and 2521890, respectively, and can be obtained free of charge via www.ccdc.cam.ac.uk/data_request/cif. Coordinates and associated structure factors of PldC have been deposited in the Protein Data Bank (PDB) with accession code 26WF.
