6N9R:
reference: The Structural Determinants Accounting for the Broad Substrate Specificity of the Quorum Quenching Lactonase GcL., Bergonzi C, Schwab M, Naik T, Elias M, Chembiochem. 2019 Mar 12. doi: 10.1002/cbic.201900024. PMID: 30864300

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