5N9M:
reference: First insights of peptidoglycan amidation in Gram-positive bacteria - the high-resolution crystal structure of Staphylococcus aureus glutamine amidotransferase GatD., Leisico F, V Vieira D, Figueiredo TA, Silva M, Cabrita EJ, Sobral RG, Ludovice AM, Trincao J, Romao MJ, de Lencastre H, Santos-Silva T, Sci Rep. 2018 Mar 28;8(1):5313. doi: 10.1038/s41598-018-22986-3. PMID: 29593310

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