ArticleFolia microbiologica2016
A novel surfactant-, NaCl-, and protease-tolerant β-mannanase from Bacillus sp. HJ14.
Article in Folia microbiologica, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 13 citations in OpenAlex.
- Biochemical analyses of a novel acidophilic GH5 β-mannanase fromFrontiers in microbiology · 2023Article
- Improvement of the Catalytic Ability of a Thermostable and Acidophilic β-Mannanase Using a Consensus Sequence Design Strategy.Frontiers in microbiology · 2021Article
- Applications of Microbial β-Mannanases.Frontiers in bioengineering and biotechnology · 2020Review
- Characterization and high-efficiency secreted expression in Bacillus subtilis of a thermo-alkaline β-mannanase from an alkaliphilic Bacillus clausii strain S10.Microbial cell factories · 2018Article
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Authors and funding
11 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
A glycoside hydrolase family 5 β-mannanase-encoding gene was cloned from Bacillus sp. HJ14 isolated from saline soil in Heijing town. Coding sequence of mature protein (without the predicted signal peptide from M1 to A30) was successfully expressed in Escherichia coli BL21 (DE3). Purified recombinant mannanase (rMan5HJ14) exhibited optimal activity at pH 6.5 and 65 °C. The enzyme showed good salt tolerance, retaining more than 56 % β-mannanase activity at 3.0-30.0 % (w/v) NaCl and more than 94 % of the initial activity after incubation with 3.0-30.0 % (w/v) NaCl at 37 °C for 60 min. Almost no mannanase activity was lost after incubation of rMan5HJ14 with trypsin, proteinase K, and Alcalase at 37 °C for 60 min. Surfactants and chelating agents, namely SDS, CTAB, Tween 80, Triton X-100, EDTA, and sodium tripolyphosphate, showed little or no effect (retaining >82.4 % activity) on enzymatic activity. Liquid detergents, namely Tupperware, Walch, Bluemoon, Tide, and OMO, also showed little or no effect (retaining >72.4 % activity) on enzymatic activity at 0.5-2.0 % (v/v). The enzyme further presents a high proportion (11.97 %) of acidic amino acid residues (D and E), which may affect the SDS and NaCl tolerance of the enzyme. Together, the mannanase may be an alternative for potential use in liquid detergent industry.
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