Protein kinase CK2 phosphorylates the Nef protein from a neurovirulent simian immunodeficiency virus.

Protein kinase CK2 phosphorylates the Nef protein from a neurovirulent simian immunodeficiency virus.
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蛋白激酶 CK2 磷酸化神经毒力猿猴免疫缺陷病毒的 Nef 蛋白。

DOI:
10.1016/j.virol.2005.12.028
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发表时间:
2006
期刊:
Virology.
影响因子:
--
通讯作者:
Barber,SheilaA
Barber,SheilaA
中科院分区:
--
文献类型:
--
作者:
Caples,MatthewJ;Clements,JaniceE;Barber,SheilaA

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人类免疫缺陷病毒 (HIV) 和猿猴免疫缺陷病毒 (SIV) 的 Nef 蛋白是一种多能辅助蛋白,在疾病进展中发挥关键作用。 SIV 和 HIV 的 Nef 蛋白的一项类似特征是与细胞激酶结合的能力。我们之前报道过,来自嗜巨噬细胞的神经毒力 SIV 克隆 SIV/17E-Fr 的 Nef 蛋白与一种未知的激酶活性相关,该活性不同于与 SIVmac239 Nef 相互作用的 p21 相关激酶。使用定点诱变和激酶特异性抑制剂,我们已将该激酶鉴定为普遍存在的丝氨酸/苏氨酸激酶,即蛋白激酶 CK2。
The Nef protein of Human Immunodeficiency Virus (HIV) and Simian Immunodeficiency Virus (SIV) is a pluripotent accessory protein that plays a critical role in disease progression. One analogous characteristic of Nef proteins from SIV and HIV is the ability to associate with cellular kinases. We have previously reported that the Nef protein from a macrophage-tropic neurovirulent SIV clone, SIV/17E-Fr, is associated with an unknown kinase activity that is distinct from the p21-associated kinase that interacts with SIVmac239 Nef. Using site-directed mutagenesis and kinase-specific inhibitors, we have identified this kinase as the ubiquitous serine/threonine kinase, protein kinase CK2.