ArticleBMC biotechnology2026
Characterization of an alkali- and glucose-tolerant β-glucosidase from Karamay saline-alkali soil and its structural basis for glucose tolerance.
Article in BMC biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundIndustrial applications of β-glucosidases are often constrained by high salinity, alkaline conditions, and glucose inhibition.
resultsA glycoside hydrolase family 1 β-glucosidase, B0-BG40, was mined from the metagenome of saline-alkali soil in Karamay, Xinjiang, China. When heterologously expressed in Escherichia coli, B0-BG40 exhibited optimal activity at 45 °C and pH 8.6, retaining > 60% of its maximal activity over 20-55 °C and pH 5.6-9.6. The enzyme was highly stable at 25 °C, 40 °C and 45 °C and under alkaline conditions, maintaining > 85% residual activity after prolonged incubation and showing activity enhancement following incubation at pH 8.0-10.0. B0-BG40 also tolerated up to 2.0 M NaCl and 4.0 M glucose, and displayed weak glucose inhibition (K
conclusionsB0-BG40 is a salt-, alkali-, and glucose-tolerant β-glucosidase with strong potential for applications in food and feed processing and cellulosic ethanol production.
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