Molecular Cloning, Expression, and Identification of Bre Genes Involved in Glycosphingolipids Synthesis in Helicoverpa armigera (Lepidoptera: Noctuidae)
文献类型: 外文期刊
第一作者: Xiao, Yutao
作者: Xiao, Yutao;Dhiloo, Khalid Hussain;Wu, Kongming;Soberon, Mario;Bravo, Alejandra
作者机构:
关键词: Helicoverpa armigera;glycosyltransferase;molecular cloning;subcellular localization
期刊名称:JOURNAL OF ECONOMIC ENTOMOLOGY ( 影响因子:2.381; 五年影响因子:2.568 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Glycosphingolipids (GSLs) play important roles in the cellular biology of vertebrate and invertebrate organisms, such as cell differentiation, tumor metastasis, and cell coordination. GSLs also serve as receptors for different bacterial toxins. For example, in the nematode Caenorhabditis elegans, GSLs function as receptors of the insecticidal Cry toxins produced by Bacillus thuringiensis (Bt), and mutations in bre genes involved in GSLs synthesis resulted in resistance to Cry5 toxin in this organism. However, the information of GSLs function in insects is still limited. In this study, three genes for glycosyltransferases, bre2, bre3, and bre4, from Helicoverpa armigera were identified and cloned. The previously reported bre5 gene from H. armigera was also analyzed. Protein sequence alignments revealed that proteins codified by H. armigera Bre shared high identity with homologous proteins from other organisms. Expression profile analysis revealed that the expressions of bre genes varied in the different tissues and also in the different developmental stages of H. armigera. Finally, the heterologous expression of bre genes in Trichoplusia ni Hi5 cell line showed that the corresponding translated proteins were localized in the cytoplasm of Hi5 cells. These results provide the bases for further functional studies of bre genes and analyzing potential roles of GSLs in mode of action of Cry1A toxin in H. armigera.
分类号: Q969.9
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