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Purification and Characterization of a Small Thermostable Protease from Streptomyces sp. CNXK100 Cover

Purification and Characterization of a Small Thermostable Protease from Streptomyces sp. CNXK100

Open Access
|Apr 2024

Abstract

Proteases derived from Streptomyces demonstrate numerous commendable properties, rendering it extensively applicable in biotechnology and various industrial sectors. This study focused on the purification and characterization of the thermostable protease obtained from Streptomyces sp. CNXK100. The purified protease exhibited an estimated molecular weight of 27 kDa, with optimal activity at 75°C and pH 8.0. Notably, the enzyme remained active even without any metal ions and fully active in the presence of Na+, K+, Mg2+, and Cu2+metal ions. The kinetic parameters were determined with a KM value of 3.13 mg/ml and a Vmax value of 3.28 × 106 U/mg. Furthermore, the protease has demonstrated notable stability when subjected to a treatment temperature of up to 65°C for 60 minutes, and across a broad pH range extending from 5.0 to 10.0. This protease also demonstrated resilience against a spectrum of harsh conditions, including exposure to organic solvents, surfactants, bleaching agents, and proteolytic enzymes. Additionally, the enzyme maintained its activity following treatment with commercial detergents, accomplishing complete thrombus lysis at a concentration of 2.50 mg/ml within 4 hours. Remarkably, the protease exhibited stability in terms of activity and protein concentration for 70 days at 4°C. These findings underscore the potential industrial applications of the thermostable protease from Streptomyces sp. CNXK100.

DOI: https://doi.org/10.33073/pjm-2024-014 | Journal eISSN: 2544-4646 | Journal ISSN: 1733-1331
Language: English
Page range: 155 - 165
Submitted on: Dec 16, 2023
Accepted on: Mar 13, 2024
Published on: Apr 28, 2024
Published by: Polish Society of Microbiologists
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2024 Tan Viet Pham, Truong Chinh Hua, Ngoc An Nguyen, Hanh Thi Dieu Nguyen, published by Polish Society of Microbiologists
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.