The Tomato yellow leaf curl virus (TYLCV) V2 protein inhibits enzymatic activity of the host papain-like cysteine protease CYP1.

The Tomato yellow leaf curl virus (TYLCV) V2 protein inhibits enzymatic activity of the host papain-like cysteine protease CYP1.
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DOI:
10.1016/j.bbrc.2015.03.063
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发表时间:
2015-05-08
影响因子:
3.1
通讯作者:
Gafni, Yedidya
Gafni, Yedidya
中科院分区:
生物学4区
文献类型:
--
作者:
Bar-Ziv, Amalia;Levy, Yael;Citovsky, Vitaly;Gafni, Yedidya

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病毒V2蛋白是番茄黄化曲叶病毒(TYLCV)利用来对抗寄主防御的关键因子之一。除了通过靶向沉默机制的宿主SGS3成分来抑制植物RNA沉默防御外,V2还与宿主CyP1蛋白相互作用,CyP1蛋白是一种木瓜蛋白酶样半胱氨酸蛋白酶,可能参与过敏性反应。然而,V2-CyP1相互作用的生物学效应仍不清楚。我们通过证明V2抑制CYP1的酶活性,但不干扰该蛋白的翻译后成熟来解决这个问题。
The viral V2 protein is one of the key factors that Tomato yellow leaf curl geminivirus (TYLCV), a major tomato pathogen worldwide, utilizes to combat the host defense. Besides suppressing the plant RNA silencing defense by targeting the host SGS3 component of the silencing machinery, V2 also interacts with the host CYP1 protein, a papain-like cysteine protease likely involved in hypersensitive response reactions. The biological effects of the V2-CYP1 interaction, however, remain unknown. We addressed this question by demonstrating that V2 inhibits the enzymatic activity of CYP1, but does not interfere with post-translational maturation of this protein.
DOI: 10.1371/journal.pone.0029317
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