首页> 外文期刊>Journal of King Saud University >Partial characterization of phenoloxidase enzyme in the hemocytes of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae)
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Partial characterization of phenoloxidase enzyme in the hemocytes of Helicoverpa armigera Hübner (Lepidoptera: Noctuidae)

机译:棉铃虫Hübner(鳞翅目:夜蛾科)血细胞中酚氧化酶的部分表征

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Phenoloxidase (PO) activity plays a key role in the innate immune responses of insects, which catalyzes the biosynthesis of quinones and other reactive intermediates to eliminate invading pathogens and parasites. This study was conducted to characterize the biochemical properties of the PO enzyme from the hemocytes of the cotton bollworm Helicoverpa armigera Hübner. The maximum activity of PO occurred at pH 6 and at 30 °C and it was stable for 12–24 h. The Michaelis–Menten constant ( K m ) and the maximal velocity ( V max ) were determined as 1.86 mM and 0.35 U/mg protein, respectively. This is the first report of PO characterization in H. armigera from Iran that provided biochemical optimized conditions for its activity, and with these ongoing studies, our aim will be to develop new strategies for cotton bollworm control using disruptors of the immune system.
机译:酚氧化酶(PO)活性在昆虫的先天免疫反应中起关键作用,它催化醌和其他反应性中间体的生物合成,以消除入侵的病原体和寄生虫。进行这项研究来表征棉铃虫Helicoverpa armigeraHübner的血细胞中PO酶的生化特性。 PO的最大活性发生在pH值为6和30°C时,其稳定时间为12–24 h。 Michaelis-Menten常数(K m)和最大速度(V max)分别确定为1.86 mM和0.35 U / mg蛋白。这是来自伊朗棉铃虫的PO表征的第一份报告,为它的活性提供了生物化学优化条件,通过这些正在进行的研究,我们的目标是开发利用免疫系统破坏剂控制棉铃虫的新策略。

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