3R4C:
reference: The X-ray crystallographic structure and specificity profile of HAD superfamily phosphohydrolase BT1666: Comparison of paralogous functions in B. thetaiotaomicron., Lu Z, Dunaway-Mariano D, Allen KN, Proteins. 2011 Nov;79(11):3099-107. doi: 10.1002/prot.23137. Epub 2011 Aug, 30. PMID: 21989931

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