4IF2:
reference: The crystal structure of the phosphotriesterase from M. tuberculosis, another member of phosphotriesterase-like lactonase family., Zhang L, Wang H, Liu X, Zhou W, Rao Z, Biochem Biophys Res Commun. 2019 Mar 5;510(2):224-229. doi:, 10.1016/j.bbrc.2019.01.069. Epub 2019 Jan 28. PMID: 30704759

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