当前位置: X-MOL 学术J. Proteome Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Venom Peptide Repertoire of the European Myrmicine Ant Manica rubida: Identification of Insecticidal Toxins.
Journal of Proteome Research ( IF 3.8 ) Pub Date : 2020-03-17 , DOI: 10.1021/acs.jproteome.0c00048
Axel Touchard 1 , Samira R Aili 2 , Nathan Téné 1 , Valentine Barassé 1 , Christophe Klopp 3 , Alain Dejean 4, 5 , R Manjunatha Kini 6, 7 , Mrinalini 6 , Laurent Coquet 8 , Thierry Jouenne 8 , Benjamin Lefranc 9 , Jérôme Leprince 9 , Pierre Escoubas 10 , Graham M Nicholson 2 , Michel Treilhou 1 , Elsa Bonnafé 1
Affiliation  

Using an integrated transcriptomic and proteomic approach, we characterized the venom peptidome of the European red ant, Manica rubida. We identified 13 “myrmicitoxins” that share sequence similarities with previously identified ant venom peptides, one of them being identified as an EGF-like toxin likely resulting from a threonine residue modified by O-fucosylation. Furthermore, we conducted insecticidal assays of reversed-phase HPLC venom fractions on the blowfly Lucilia caesar, permitting us to identify six myrmicitoxins (i.e., U3-, U10-, U13-, U20-MYRTX-Mri1a, U10-MYRTX-Mri1b, and U10-MYRTX-Mri1c) with an insecticidal activity. Chemically synthesized U10-MYRTX-Mri1a, -Mri1b, -Mri1c, and U20-MYRTX-Mri1a irreversibly paralyzed blowflies at the highest doses tested (30–125 nmol·g–1). U13-MYRTX-Mri1a, the most potent neurotoxic peptide at 1 h, had reversible effects after 24 h (150 nmol·g–1). Finally, U3-MYRTX-Mri1a has no insecticidal activity, even at up to 55 nmol·g–1. Thus, M. rubida employs a paralytic venom rich in linear insecticidal peptides, which likely act by disrupting cell membranes.

中文翻译:

欧洲Mymicic蚂蚁Manica rubida的毒肽库:杀虫毒素的鉴定。

使用整合的转录组和蛋白质组学方法,我们表征了欧洲红蚂蚁Manica rubida的毒液肽组。我们鉴定了13种“ myrmicitoxins”,它们与先前鉴定的抗毒肽具有序列相似性,其中一种被鉴定为EGF样毒素,可能是由O-岩藻糖基化修饰的苏氨酸残基引起的。此外,我们对绿头苍蝇进行反相HPLC毒液馏分的杀虫试验丝光绿撒,从而允许我们能够识别6个myrmicitoxins(即,U 3 - ,U 10 - ,U 13 - ,U 20 -MYRTX-Mri1a,U 10 - MYRTX-Mri1b和U 10-MYRTX-Mri1c)具有杀虫活性。化学合成的U 10 -MYRTX-Mri1a,-Mri1b,-Mri1c和U 20 -MYRTX-Mri1a以最高测试剂量(30–125 nmol·g –1)不可逆地使蝇蝇瘫痪。U 13 -MYRTX-Mri1a,在1小时内最有效的神经毒性肽,在24小时后具有可逆作用(150 nmol·g –1)。最后,即使在高达55 nmol·g –1的条件下,U 3 -MYRTX-Mri1a也没有杀虫活性。因此,茜草分枝杆菌使用富含线性杀虫肽的麻痹毒液,其可能通过破坏细胞膜起作用。
更新日期:2020-04-24
down
wechat
bug