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Enhanced catalytic activity of Bacillus aryabhattai P1 protease by modulation with nanoactivator.


ABSTRACT: In the developing area of modern nanobiotechnology, the research is being focused on enhancement of catalytic performance in terms of efficiency and stability of enzymes to fulfill the industrial demand. In the context of this interdisciplinary era, we isolated and identified alkaline protease producer Bacillus aryabhattai P1 by polyphasic approach and then followed one variable at a time approach to optimize protease production from P1. The modified components of fermentation medium (g/L) were wheat bran 10, soybean flour 10, yeast extract 5, NaCl 10, KH2PO4 1, K2HPO4 1 and MgSO4·7H2O 0.2 (pH 9). The optimum alkaline protease production from P1 was recorded 75 ± 3 U/mg at 35 °C and pH 9 after 96 h of fermentation period. Molecular weight of partially purified P1 alkaline protease was 26 KDa as revealed by SDS-PAGE. Calcium based nanoceramic material was prepared by wet chemical precipitation method and doped in native P1 protease for catalytic activity enhancement. Catalytic activity of modified P1 protease was attained by nanoactivator mediated modulation was more by 5.58 fold at pH 10 and 30 °C temperature. The nanoceramic material named as nanoactivator, with grain size of 40-60 nm was suitable to redesign the active site of P1 protease. Such types of modified proteases can be used in different nanobiotechnological applications.

SUBMITTER: Pathak AP 

PROVIDER: S-EPMC7276444 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature

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Enhanced catalytic activity of <i>Bacillus aryabhattai</i> P1 protease by modulation with nanoactivator.

Pathak Anupama P AP   Rathod Mukundraj G MG   Mahabole Megha P MP   Khairnar Rajendra S RS  

Heliyon 20200604 6


In the developing area of modern nanobiotechnology, the research is being focused on enhancement of catalytic performance in terms of efficiency and stability of enzymes to fulfill the industrial demand. In the context of this interdisciplinary era, we isolated and identified alkaline protease producer <i>Bacillus aryabhattai</i> P1 by polyphasic approach and then followed one variable at a time approach to optimize protease production from P1. The modified components of fermentation medium (g/L  ...[more]

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