6D5A:
reference: Structural Basis for the Interaction and Processing of beta-Lactam Antibiotics by l,d-Transpeptidase 3 (LdtMt3) from Mycobacterium tuberculosis., Libreros-Zuniga GA, Dos Santos Silva C, Salgado Ferreira R, Dias MVB, ACS Infect Dis. 2019 Feb 8;5(2):260-271. doi: 10.1021/acsinfecdis.8b00244. Epub, 2018 Dec 28. PMID: 30556998

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