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Mol Biol Rep ; 51(1): 767, 2024 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-38878205

RESUMO

BACKGROUND: Esterases (EC 3.1.1.X) are enzymes that catalyze the hydrolysis ester bonds. These enzymes have large potential for diverse applications in fine industries, particularly in pharmaceuticals, cosmetics, and bioethanol production. METHODS AND RESULTS: In this study, a gene encoding an esterase from Thermobifida fusca YX (TfEst) was successfully cloned, and its product was overexpressed in Escherichia coli and purified using affinity chromatography. The TfEst kinetic assay revealed catalytic efficiencies of 0.58 s-1 mM-1, 1.09 s-1 mM-1, and 0.062 s-1 mM-1 against p-Nitrophenyl acetate, p-Nitrophenyl butyrate, and 1-naphthyl acetate substrates, respectively. Furthermore, TfEst also exhibited activity in a pH range from 6.0 to 10.0, with maximum activity at pH 8.0. The enzyme demonstrated a half-life of 20 min at 70 °C. Notably, TfEst displayed acetyl xylan esterase activity as evidenced by the acetylated xylan assay. The structural prediction of TfEst using AlphaFold indicated that has an α/ß-hydrolase fold, which is consistent with other esterases. CONCLUSIONS: The enzyme stability over a broad pH range and its activity at elevated temperatures make it an appealing candidate for industrial processes. Overall, TfEst emerges as a promising enzymatic tool with significant implications for the advancement of biotechnology and biofuels industries.


Assuntos
Acetilesterase , Esterases , Thermobifida , Acetilesterase/metabolismo , Acetilesterase/genética , Acetilesterase/química , Concentração de Íons de Hidrogênio , Cinética , Especificidade por Substrato , Thermobifida/enzimologia , Thermobifida/genética , Esterases/metabolismo , Esterases/genética , Esterases/química , Estabilidade Enzimática , Temperatura , Escherichia coli/genética , Escherichia coli/metabolismo , Clonagem Molecular/métodos , Hidrólise , Xilanos/metabolismo , Butiratos/metabolismo , Proteínas de Bactérias/metabolismo , Proteínas de Bactérias/genética , Proteínas de Bactérias/química , Nitrofenóis
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