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Different enzymatic properties between LinBMI and LinBUT. (A) β-HCH degradation reactions catalyzed by LinBMI and LinBUT. LinBMI converts β-HCH to PCHL and further to TCDL, while LinBUT catalyzes only the first-step conversion of β-HCH to PCHL. The activity of LinBMI is approximately eight times as high as that of LinBUT in the first-step dehalogenation of β-HCH to PCHL (7). (B) The seven amino acid residues that are different between LinBMI and LinBUT.
