马类ANP32蛋白支持A型流感病毒RNA聚合酶活性
Yuan Zhang1, Xing Guo1, Mengmeng Yu1
1State Key Laboratory for Animal Disease Control and Prevention, Harbin Veterinary Research Institute, the Chinese Academy of Agricultural Sciences, Harbin, 150069, China.
Virologica Sinica
|November 4, 2024
概括
马类ANP32A变异X2是马流感病毒 (EIV) 复制的关键,支持RNA聚合酶活性. 马匹ANP32B显示最小的支持,突出显示ANP32A_X2
科学领域:
- 病毒学 病毒学
- 分子生物学分子生物学
- 蛋白质科学 蛋白质科学
背景情况:
- 主体ANP32家族蛋白质对于流感RNA聚合酶活性和病毒跨物种传播至关重要.
- 了解马体ANP32 (eqANP32) 蛋白在马体流感病毒 (EIV) 复制中的作用是有限的.
研究的目的:
- 研究马匹ANP32A (eqANP32A) 和马匹ANP32B (eqANP32B) 的分子特性.
- 确定这些蛋白质如何影响EIVRNA聚合酶活性和病毒复制效率.
主要方法:
- 对eqANP32A.的替代拼接变体的分析.
- 对EIVRNA聚合酶活性的评估得到了不同eqANP32变异的支持.
- 对eqANP32A和eqANP32B蛋白质进行序列分析.
主要成果:
- 确定了六种equANP32A的替代拼接变体,表达水平各不相同.
- 该 eqANP32A_X2 变体显示了最高的表达和最大的支持EIV RNA聚合酶活性.
- 在eqANP32A变体的N-Cap区域的差异影响了形状,但不影响RNA聚合酶结合.
- 由于其C端序列,马类ANP32B对EIVRNA聚合酶活性的支持非常低.
- eqANP32A_X2被确定为马匹EIV复制效率的主要决定因素.
结论:
- 马类ANP32A,特别是X2变种,对于EIV复制至关重要.
- ANP32A的N-cap区域在支持流感病毒聚合酶活性方面发挥着重要作用.
- 马类ANP32B在支持EIVRNA聚合酶活性方面具有有限的作用.
更多相关视频
11:20Affinity Purification of Influenza Virus Ribonucleoprotein Complexes from the Chromatin of Infected Cells
Published on: June 3, 2012
13.1K
12:18Expression of Functional Recombinant Hemagglutinin and Neuraminidase Proteins from the Novel H7N9 Influenza Virus Using the Baculovirus Expression System
Published on: November 6, 2013
24.0K
相关概念视频
02:28Leaky Scanning
5.1K
During most eukaryotic translation processes, the small 40S ribosome subunit scans an mRNA from its 5' end until it encounters the first start AUG codon. The large 60S ribosomal subunit then joins the smaller one to initiate protein synthesis. The location of the translation initiation is largely determined by the nucleotides near the start codon as there may be multiple translation initiation sites present on the mRNA. Marilyn Kozak discovered that the sequence RCCAUGG (where R...
5.1K
00:58Eukaryotic RNA Polymerases
23.7K
RNA Polymerase (RNAP) is conserved in all animals, with bacterial, archaeal, and eukaryotic RNAPs sharing significant sequence, structural, and functional similarities. Among the three eukaryotic RNAPs, RNA Polymerase II is most similar to bacterial RNAP in terms of both structural organization and folding topologies of the enzyme subunits. However, these similarities are not reflected in their mechanism of action.
All three eukaryotic RNAPs require specific transcription factors, of which the...
All three eukaryotic RNAPs require specific transcription factors, of which the...
23.7K
02:36RNA Polymerase II Accessory Proteins
3.1K
3.1K