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新型冷活性奇脱乙酸酶的表征,用于生物活性奇托的绿色生产
Mohamed N Abd El-Ghany1, Salwa A Hamdi2, Ahmed K Zahran3
1Botany and Microbiology Department, Faculty of Science, Cairo University, Giza, 12613, Egypt.
AMB Express
|January 4, 2025
概括
来自Shewanella psychrophila WP2的新型冷活性酶SpsCDA有效地将基转化为基酸盐. 这种环保的奇托桑通过破坏细胞膜,对Fusarium oxysporum表现出强大的抗真菌活性.
科学领域:
- 生物技术是生物技术.
- 酶学 是一种酶学.
- 微生物学 微生物学
背景情况:
- 基是一种从基中提取的生物聚合物,具有有价值的特性,但其生产通常涉及苛刻的化学过程.
- 酶去乙化为酸盐生产提供了一个更绿色的替代方案.
- 冷活性酶对于低温生物处理是可取的,减少了能源消耗.
研究的目的:
- 描述一种来自Shewanella psychrophila WP2的新型冷活性酸脱乙酶 (SpsCDA).
- 用SpsCDA.评估使用奇托的酶性生产.
- 为了评估产生的奇托桑对虫的抗真菌性能.
主要方法:
- 在大肠杆菌中过度表达和净化复合SpsCDA.
- 在最佳条件下 (15°C,pH 8.0) 使用SpsCDA将基酶去乙化为基.
- 通过MIC,TEM和ROS测定,对SpsCDA活性,产生的奇托性质 (可溶性,脱乙烯化程度,分子量,结晶性) 和抗真菌功效的表征.
主要成果:
- 纯化SpsCDA的特异活性为92U/mg,在15°C和pH8.0时具有最佳活性.
- 酸生物转化产生了69.2%的酸盐,78.1%的脱乙基化和73.4%的溶解度.
- 生产的奇托对F. oxysporum具有显著的抗真菌活性,MIC为1.56 mg/mL,导致膜损伤和ROS积累.
结论:
- SpsCDA是一种有效的冷活性酸脱乙酶,适合绿色酸盐生产.
- 酶生成的奇托对F. oxysporum具有有前途的抗真菌特性.
- 这项研究突出了基托合成的可持续酶方法及其潜在应用.
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