在Pichia pastoris中表达的来自昆虫的奇特纳菌的功能性表征和抗真菌活性
Katia Celina Santos Correa1, Gabriel Henrique Ribeiro2, Odair Correa Bueno3
1Department of Chemistry, Federal University of Sao Carlos, São Carlos 13565-905, SP, Brazil.
Polymers
|February 13, 2026
概括
来自剪叶的三种重组基因酶的特征被描述了. 这些来自昆虫的酸酶表现出特定物种的抗真菌活性,突出了它们在生物技术应用中的潜力.
科学领域:
- 生物化学 生物化学
- 酶学 是一种酶学.
- 菌类学 菌类学是指菌类学.
背景情况:
- 基提纳酶是分解基的酶,基是一种重要的结构生物聚合物.
- 关于昆虫衍生的酸酶的研究是有限的,尽管它们的生物学作用多样化.
- 性腺酸酶为新型生物技术工具提供了潜在的来源.
研究的目的:
- 克隆,表达和生化表征来自阿塔性质的三种重组基因酶.
- 评估这些基提纳酶对人类和植物病原体的抗真菌活性.
- 探索昆虫衍生的酸酶在医学和农业的潜在应用.
主要方法:
- 在Pichia pastoris中,三种阿塔性腺基因酶 (AsChtII-C2B3,AsChtII-C3C4,AsChtII-C5B1) 的重组表达.
- 生物化学表征,包括最佳pH值,温度和基质特异性,使用合基.
- 对Candida albicans,Aspergillus fumigatus和Lasiodiplodia theobromae进行抗真菌活性测定.
- 使用扫描电子显微镜 (SEM) 对形变形的结构分析.
主要成果:
- 在pH4-5和50°C时观察到所有三个基因酶的最佳活性.
- 质子核磁共振 (1H NMR) 光谱学证实了基因酶活性.
- AsChtII-C5B1显示出对Candida albicans (87.6%) 的显著抑制.
- AsChtII-C3C4对Aspergillus fumigatus (60%的抑制) 是最有效的.
- AsChtII-C2B3独特地抑制了Lasiodiplodia theobromae,导致严重的形变形.
结论:
- 再组合的阿塔·塞克斯登斯基他酶具有独特的,特定于物种的抗真菌特性.
- 这些酶显示出作为向抗真菌剂的潜力.
- 这些发现支持使用来自昆虫的酸酶作为医疗和农业应用的有价值的生物技术工具.
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