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A novel surfactant-, NaCl-, and protease-tolerant β-mannanase from Bacillus sp. HJ14
R. Zhang, Z. Song, Q. Wu, J. Zhou, J. Li, Y. Mu, X. Tang, B. Xu, J. Ding, S. Deng, Z. Huang,
Folia microbiologica.
2016 ;
61 (3) :
233-42.
[pub] 20151021
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, práce podpořená grantem
Perzistentní odkaz
https://www.medvik.cz/link/bmc17004349
- MeSH
- aktivace enzymů účinky léků MeSH
- Bacillus účinky léků genetika metabolismus MeSH
- beta-mannosidasa chemie genetika izolace a purifikace metabolismus MeSH
- chlorid sodný farmakologie MeSH
- detergenty farmakologie MeSH
- endopeptidasy metabolismus MeSH
- exprese genu MeSH
- genom bakteriální MeSH
- hydrolýza MeSH
- ionty MeSH
- kovy MeSH
- povrchově aktivní látky farmakologie MeSH
- rekombinantní proteiny MeSH
- sekvence aminokyselin MeSH
- sekvenční analýza DNA MeSH
- stabilita enzymů účinky léků MeSH
- tolerance k soli * MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
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.
Citace poskytuje Crossref.org
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- $a 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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