Funding Information: This work was supported by the European Union Marie Sklodowska Curie Innovative Training Networks (contract number 642068) to AOH and AF was the recipient of a PhD fellowship under that contract. This project was supported by award PTDC/BIA\u2010MIC/29293/2017 to MS. This work was also financially supported by Project LISBOA\u201001\u20100145\u2010FEDER\u2010007660 (\u201CMicrobiologia Mole...
Funding Information: We thank Aleksandra Zielińska for help in the initial phase of the project, Manuel Osorio-Valeriano for advice on protein purification and biochemistry, Julia Rosum and Olga Ebers for excellent technical assistance, Daniela Vollmer for the purification of peptidoglycan, and the staff of the ALBA Synchrotron facility for support during crystallographic data collection. This work was supporte...