2RB5:
reference: The catalytic scaffold of the haloalkanoic acid dehalogenase enzyme superfamily acts as a mold for the trigonal bipyramidal transition state., Lu Z, Dunaway-Mariano D, Allen KN, Proc Natl Acad Sci U S A. 2008 Apr 15;105(15):5687-92. Epub 2008 Apr 8. PMID: 18398008

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