3TX4:
reference: Targeting the Cell Wall of Mycobacterium tuberculosis: Structure and Mechanism of L,D-Transpeptidase 2., Erdemli SB, Gupta R, Bishai WR, Lamichhane G, Amzel LM, Bianchet MA, Structure. 2012 Dec 5;20(12):2103-15. doi: 10.1016/j.str.2012.09.016. Epub 2012, Oct 25. PMID: 23103390

This OCA Structure page
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