6JKW:
reference: PNGM-1, a novel subclass B3 metallo-beta-lactamase from a deep-sea sediment metagenome., Park KS, Kim TY, Kim JH, Lee JH, Jeon JH, Karim AM, Malik SK, Lee SH, J Glob Antimicrob Resist. 2018 Sep;14:302-305. doi: 10.1016/j.jgar.2018.05.021., Epub 2018 May 26. PMID: 29842976

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