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Biologia




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Volume 64, Issue 4

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Insoluble but enzymatically active α-amylase from Bacillus licheniformis

Naeem Rashid / Alia Farooq
  • School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan
  • Institute of Industrial Biotechnology, Government College University, Lahore, 54000, Pakistan
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/ Ikram-ul-Haq / Muhammad Akhtar
Published Online: 2009-07-17 | DOI: https://doi.org/10.2478/s11756-009-0132-5

Abstract

The gene encoding thermostable α-amylase from Bacillus licheniformis consisting of 483 amino acid residues (mature protein) was cloned and expressed in Escherichia coli under the control of T7 promoter. The analysis of the soluble and insoluble fractions after lyzing the host cells revealed that recombinant α-amylase was produced in insoluble aggregates. Despite being produced in the insoluble aggregates the recombinant enzyme was highly active with a specific activity of 408 U/mg.

Keywords: Bacillus licheniformis; cloning; α-amylase; inclusion bodies

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About the article

Published Online: 2009-07-17

Published in Print: 2009-08-01


Citation Information: Biologia, Volume 64, Issue 4, Pages 660–663, ISSN (Online) 1336-9563, ISSN (Print) 0006-3088, DOI: https://doi.org/10.2478/s11756-009-0132-5.

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© 2009 Slovak Academy of Sciences. This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License. BY-NC-ND 3.0

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