来自Mucor circinelloides的脂酶的异质表达和酶性质
Yao Zhang1,2, Yan Sun3,4, Zhuo Liu3,4
1Food Bioengineering and Technology Laboratory, Department of Food Science and Nutrition, College of Culture and Tourism, University of Jinan, 13 Shungeng Road, Jinan, 250022, People's Republic of China. shc_zhangy@ujn.edu.cn.
Scientific reports
|March 29, 2025
概括
来自Mucor circinelloides的新型脂酶被克隆和表达,在50°C和pH值9.0时显示最佳活性. 这种微生物脂酶表现出广泛的pH稳定性和生物技术中的工业应用潜力.
科学领域:
- 生物技术是生物技术.
- 酶学 是一种酶学.
- 微生物遗传学微生物遗传学
背景情况:
- 微生物脂酶是脂肪和油修饰的关键酶,在食品,生物能源和化学工业中具有应用.
- 甲状腺菌 (Mucor circinelloides) 已被认可为产生玛-烯酸,并拥有众多的脂酶基因.
- 了解这些脂酶是释放其工业潜力的关键.
研究的目的:
- 从Mucor circinelloides WJ11中克隆和表征一种新型脂酶 (WJ_23).
- 评估其生物化学特性,包括最佳条件,稳定性和基质偏好.
- 评估其对工业应用的潜力.
主要方法:
- 在Pichia pastoris中对脂酶基因的克隆和异质表达.
- 再组合脂酶的净化到同质性.
- 生物化学表征包括SDS-PAGE,最佳温度/pH测定,稳定性测定,基质特异性,动力分析 (Vmax,Km) 以及对金属离子和有机溶剂的耐受性.
主要成果:
- 来自M. circinelloides的重组脂酶 (WJ_23) 成功表达和净化,估计分子量为34kDa.
- 在50°C和pH9.0下观察到最佳活性,具有良好的热稳定性和广泛的pH稳定性 (pH6.011.0).
- 该酶表现出对长链基质的偏好,在长时间化后在pH值7.09.0之间表现出强大的活性,并表现出对各种金属离子和有机溶剂的耐受性.
结论:
- 来自M. circinelloides的特征性脂酶WJ_23具有有利的生化特性,可用于工业应用.
- 它的稳定性和耐受性表明它在各种生物技术过程中具有潜在的实用性.
- 这项研究为进一步探索和应用M. circinelloides衍生的脂酶提供了基础.
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