从Bacillus sp修饰以乙基甲基硫酸盐为改进的应用程序生产的pullulanase的净化和生物化学表征
Oladipo O Olaniyi1, Blessing Oriade1, Olusola T Lawal2
1Microbiology Department, Federal University of Technology, Akure, Nigeria.
Preparative biochemistry & biotechnology
|August 17, 2023
概括
突变的细菌sp. 突变的细菌sp. 与野生类型相比,pullulanase表现出增强的酶特性和稳定性. 这种改进的pullulanase酶为更广泛的工业应用提供了潜力.
科学领域:
- 生物化学 生物化学
- 酶学 是一种酶学.
- 微生物生物技术 微生物生物技术
背景情况:
- 菌株的改善对于增强酶的生产和特性至关重要.
- 化学变异原体可以在微生物中诱导有益的遗传修饰.
- 普卢拉纳酶酶具有重要的工业应用.
研究的目的:
- 调查和比较来自野生型和突变型Bacillus sp.的pullulanase的物理化学特性.
- 评估乙基甲基硫酸盐诱导的突变对拉酶特征的影响.
- 评估突变的普鲁酶的潜在工业用途.
主要方法:
- 从野生和突变的Bacillus sp.中净化pullulanase. 使用一个三步程序.
- 酶性质的表征包括分子质量,最佳温度和pH值.
- 评估酶稳定性,基质亲和力 (Km),以及对金属离子和化剂的耐受性.
主要成果:
- 突变的pullulanase (43.23 kDa) 的产量和净化折叠率略低于野生类型 (40 kDa).
- 最佳活动和稳定性各不相同,突变者比野生类型 (1.6mM) 具有更广泛的pH耐受性 (pH6-9) 和更低的Km (0.03mM).
- 突变的pullulanase表现出对金属离子和化剂的优越耐受性.
结论:
- 乙基甲基硫酸诱导的突变显著增强了Bacillus sp.的物理化学特性. 拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉拉
- 突变的pullulanase表现出更好的特征,包括更广泛的pH稳定性和更好的耐受性.
- 这些增强的特性表明,突变的普鲁酶在各种工业应用中具有更大的潜力.
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