相关实验视频

Updated: Jan 13, 2026

Crystal Structure of the N-terminal Domain of Ryanodine Receptor from Plutella xylostella

Crystal Structure of the N-terminal Domain of Ryanodine Receptor from Plutella xylostella

Published on: November 30, 2018

结构解,生物和分子对接研究来自Bacillus thuringiensis菌株BUPM14的 δ-Endotoxin Cry1Ca17

Fatma Driss¹, Syrine Ben Abdallah¹, Ameny Farhat¹

¹Laboratory of Biopesticides, Centre of Biotechnology of Sfax, University of Sfax, Sidi Mansour Road km 6, B.P 1177, Sfax 3018, Tunisia.

|January 8, 2026

概括

研究人员发现了一种新的杀虫蛋白,Cry1Ca17,来自Bacillus thuringiensis (Bt) 亚种. 库尔斯塔基. 这是. 这种新型内毒素对白类害虫具有很高的毒性,并为综合性害虫管理策略提供了潜力.

科学领域:

微生物学微生物学
分子生物学分子生物学
昆虫学昆虫学是一门学科.

背景情况:

修灵菌 (Bt) 产生δ-内毒素用于杀虫.
持续发现新的Bt毒素对于害虫耐药性管理至关重要.
cry1C基因编码了白类活跃晶体蛋白.

研究的目的:

为了识别和描述来自Bacillus thuringiensis菌株的新型δ-内毒素.
为了研究新发现的cry1C基因的杀虫活性和分子特性.
用分子对接来探索毒素受体相互作用.

主要方法:

使用常规技术和16S rDNA分析分离和识别Bacillus thuringiensis菌株.
克隆和对cry1C基因进行测序.
蛋白质分子质量的确定和同质分析.
分子对接研究来分析毒素受体相互作用.

主要成果:

一个新的Bacillus thuringiensis亚种. 鉴定了携带cry1C基因的库尔斯塔基菌株 (BUPM14).
孤立的cry1C基因 (3573 bp) 编码了一个134.673 kDa的蛋白质,称为Cry1Ca17.
Cry1Ca17对白类昆虫具有显著的杀虫毒性.
Cry1Ca17与已知的Cry1C δ-内毒素具有99%的同质性,具有利比多菌活性蛋白特征的保存域.
分子对接揭示了参与毒素受体结合和催化相互作用的关键氨基酸残留物.

结论:

这种新型的Cry1Ca17 δ-endotoxin来自Bacillus thuringiensis亚种. 库尔斯塔基是对抗白虫害的有力药剂.
对Cry1Ca17的表征提供了关于Bt毒素机制和在害虫控制中的潜在应用的见解.
了解毒素受体相互作用有助于开发更有效和更有针对性的杀虫剂策略.

更多相关视频

Recombinant Protein Expression, Crystallization, and Biophysical Studies of a Bacillus-conserved Nucleotide Pyrophosphorylase, BcMazG

Recombinant Protein Expression, Crystallization, and Biophysical Studies of a Bacillus-conserved Nucleotide Pyrophosphorylase, BcMazG

Published on: May 16, 2017

The Insect Galleria mellonella as a Powerful Infection Model to Investigate Bacterial Pathogenesis

The Insect Galleria mellonella as a Powerful Infection Model to Investigate Bacterial Pathogenesis

Published on: December 11, 2012

相关概念视频

Endospores and Sporulation

Endospores and Sporulation

Endospores are specialized, dormant cells primarily formed by Gram-positive bacteria, including Bacillus and Clostridium, enabling survival under extreme environmental conditions. Due to their unique composition and formation process, these structures are highly resistant to physical and chemical insults, such as extreme heat, ultraviolet and ionizing radiation, desiccation, and toxic chemicals. Rare instances of endospore-like structures have also been observed in some Gram-negative bacteria,...