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"Protease I" of Escherichia coli functions as a thioesterase in vivo.

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PMC
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  • Biology
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Abstract

Escherichia coli protease I is assayed as an esterase active with certain synthetic model chymotrypsin substrates. However, the gene encoding protease I has the same DNA sequence and genomic location as tesA, a gene that encodes E. coli thioesterase I. We report that both hydrolase activities utilize the same active site and demonstrate that the protein functions as a thioesterase in vivo.

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