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Updated: Jul 10, 2026
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Crystal Structure of the N-terminal Domain of Ryanodine Receptor from Plutella xylostella
Published on: November 30, 2018
The insecticidal crystal protein Cry2Ab10 from Bacillus thuringiensis: cloning, expression, and structure simulation.
Yi Lin1, Guangwei Fang, Fuying Cai
1Department of Bioengineering and Biotechnology, HuaQiao University, Key Laboratory of Industrial Biotechnology of Fujian Province Universities, Quanzhou, Fujian, China. lyhxm@hqu.edu.cn
Biotechnology Letters
|November 2, 2007
Summary
Bacillus thuringiensis produced a new Cry2Ab10 protein highly toxic to Plutella xylostella. Researchers used modeling to predict its structure and receptor-binding sites for pest control applications.
Area of Science:
- Molecular biology
- Biochemistry
- Insect toxicology
Background:
- Bacillus thuringiensis (Bt) produces insecticidal proteins.
- Cry2Ab proteins are a class of Bt toxins.
- Plutella xylostella is a significant agricultural pest.
Purpose of the Study:
- To clone and express a novel cry2Ab-type gene.
- To evaluate the insecticidal activity of the recombinant protein.
- To predict the protein's structure and receptor interactions.
Main Methods:
- Gene cloning from Bacillus thuringiensis.
- Recombinant protein expression in E. coli.
- Toxicity assays against Plutella xylostella.
- Homology modeling for protein structure prediction.
- Molecular docking for receptor-binding site analysis.
Main Results:
- The cry2Ab10 gene was successfully cloned and expressed.
- The recombinant Cry2Ab10 protein exhibited high toxicity to Plutella xylostella.
- The 3D structure of Cry2Ab10 was modeled.
- Potential receptor-binding sites were identified.
Conclusions:
- The novel Cry2Ab10 protein is a potent insecticide against Plutella xylostella.
- Structural and binding site information can guide further development of Bt-based pesticides.
- This research contributes to the understanding of Cry protein mechanisms.
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