3W4Q:
reference: Insights into beta-lactamases from Burkholderia species, two phylogenetically related yet distinct resistance determinants., Papp-Wallace KM, Taracila MA, Gatta JA, Ohuchi N, Bonomo RA, Nukaga M, J Biol Chem. 2013 Jun 28;288(26):19090-102. doi: 10.1074/jbc.M113.458315. Epub, 2013 May 8. PMID: 23658015

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