Characterization of the native form and the carboxy-terminally truncated halotolerant form of α-amylases from Bacillus subtilis strain FP-133
© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Two amylases, amylase I and amylase II from Bacillus subtilis strain FP-133, were purified to homogeneity and characterized. Their stabilities toward temperature, pH, and organic solvents, and their substrate specificities toward polysaccharides...
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th-cmuir.6653943832-392402015-06-16T08:17:58Z Characterization of the native form and the carboxy-terminally truncated halotolerant form of α-amylases from Bacillus subtilis strain FP-133 Takenaka S. Miyatake A. Tanaka K. Kuntiya A. Techapun C. Leksawasdi N. Seesuriyachan P. Chaiyaso T. Watanabe M. Yoshida K. Applied Microbiology and Biotechnology © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Two amylases, amylase I and amylase II from Bacillus subtilis strain FP-133, were purified to homogeneity and characterized. Their stabilities toward temperature, pH, and organic solvents, and their substrate specificities toward polysaccharides and oligosaccharides were similar. Under moderately high salt conditions, both amylases were more stable than commercial B. licheniformis amylase, and amylase I retained higher amylase activity than amylase II. The N-terminal amino acid sequence, genomic southern blot analysis, and MALDI-TOFF-MS analysis indicated that the halotolerant amylase I was produced by limited carboxy-terminal truncation of the amylase II peptide. The deduced amino acid sequence of amylase II was >95% identical to that of previously reported B. subtilis α-amylases, but their carboxy-terminal truncation points differed. Three recombinant amylases - full-length amylase corresponding to amylase II, an artificially truncated amylase corresponding to amylase I, and an amylase with a larger artificial C-terminal truncation - were expressed in B. subtilis. The artificially truncated recombinant amylases had the same high amylase activity as amylase I under moderately high salt conditions. Sequence comparisons indicated that an increased ratio of Asp/Glu residues in the enzyme may be one factor responsible for increasing halotolerance. 2015-06-16T08:17:58Z 2015-06-16T08:17:58Z 2015-01-01 Article 0233111X 2-s2.0-84930275511 10.1002/jobm.201400813 http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84930275511&origin=inward http://cmuir.cmu.ac.th/handle/6653943832/39240 Wiley-VCH Verlag |
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Applied Microbiology and Biotechnology Takenaka S. Miyatake A. Tanaka K. Kuntiya A. Techapun C. Leksawasdi N. Seesuriyachan P. Chaiyaso T. Watanabe M. Yoshida K. Characterization of the native form and the carboxy-terminally truncated halotolerant form of α-amylases from Bacillus subtilis strain FP-133 |
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© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Two amylases, amylase I and amylase II from Bacillus subtilis strain FP-133, were purified to homogeneity and characterized. Their stabilities toward temperature, pH, and organic solvents, and their substrate specificities toward polysaccharides and oligosaccharides were similar. Under moderately high salt conditions, both amylases were more stable than commercial B. licheniformis amylase, and amylase I retained higher amylase activity than amylase II. The N-terminal amino acid sequence, genomic southern blot analysis, and MALDI-TOFF-MS analysis indicated that the halotolerant amylase I was produced by limited carboxy-terminal truncation of the amylase II peptide. The deduced amino acid sequence of amylase II was >95% identical to that of previously reported B. subtilis α-amylases, but their carboxy-terminal truncation points differed. Three recombinant amylases - full-length amylase corresponding to amylase II, an artificially truncated amylase corresponding to amylase I, and an amylase with a larger artificial C-terminal truncation - were expressed in B. subtilis. The artificially truncated recombinant amylases had the same high amylase activity as amylase I under moderately high salt conditions. Sequence comparisons indicated that an increased ratio of Asp/Glu residues in the enzyme may be one factor responsible for increasing halotolerance. |
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Article |
author |
Takenaka S. Miyatake A. Tanaka K. Kuntiya A. Techapun C. Leksawasdi N. Seesuriyachan P. Chaiyaso T. Watanabe M. Yoshida K. |
author_facet |
Takenaka S. Miyatake A. Tanaka K. Kuntiya A. Techapun C. Leksawasdi N. Seesuriyachan P. Chaiyaso T. Watanabe M. Yoshida K. |
author_sort |
Takenaka S. |
title |
Characterization of the native form and the carboxy-terminally truncated halotolerant form of α-amylases from Bacillus subtilis strain FP-133 |
title_short |
Characterization of the native form and the carboxy-terminally truncated halotolerant form of α-amylases from Bacillus subtilis strain FP-133 |
title_full |
Characterization of the native form and the carboxy-terminally truncated halotolerant form of α-amylases from Bacillus subtilis strain FP-133 |
title_fullStr |
Characterization of the native form and the carboxy-terminally truncated halotolerant form of α-amylases from Bacillus subtilis strain FP-133 |
title_full_unstemmed |
Characterization of the native form and the carboxy-terminally truncated halotolerant form of α-amylases from Bacillus subtilis strain FP-133 |
title_sort |
characterization of the native form and the carboxy-terminally truncated halotolerant form of α-amylases from bacillus subtilis strain fp-133 |
publisher |
Wiley-VCH Verlag |
publishDate |
2015 |
url |
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84930275511&origin=inward http://cmuir.cmu.ac.th/handle/6653943832/39240 |
_version_ |
1681421618788696064 |