
Human ANP32A/B are SUMOylated and utilized by avian influenza …
2024年12月30日 · Human ANP32A/B (huANP32A/B) poorly support the polymerase activity of avian influenza viruses (AIVs), thereby limiting interspecies transmission of AIVs from birds to humans. The...
Avian ANP32A incorporated in avian influenza A virions promotes ...
2024年1月31日 · AIV packages avANP32A through its association with vPol in the context of vRNP when replicated in avian hosts. The packaged avANP32A will be released into target cells and selectively promotes the AIV vPol activity with AIV jumping into mammals.
Cell丨流感病毒RNA聚合酶完整的转录周期模型 - 知乎
流感病毒RNA聚合酶与核蛋白(NP)、vRNA一起构成 核糖核蛋白体 (vRNP)。流感病毒进入宿主细胞后,vRNP被运送到细胞核与转录中的 Pol Ⅱ 结合,病毒聚合酶开始进行“初级”转录,产生病毒mRNA,进而合成病毒蛋白【1,2】。
NEIL1 block IFN-β production and enhance vRNP function to
2024年11月21日 · After infection with AIV, the expression levels of mRNA, cRNA and vRNA of the NP gene of AIV were significantly upregulated in cells overexpressing NEIL1 (Fig. 7e), in which the up-regulation...
Human ANP32A/B are SUMOylated and utilized by avian influenza …
2024年12月30日 · The SIM-SUMO-mediated interactions between NS2 and huANP32A/B function to promote AIV polymerase activity by positively regulating AIV vRNP-huANP32A/B interactions and AIV vRNP assembly. Our study offers insights into the mechanism of NS2-SIM in facilitating AIVs adaptation to mammals.
Human ANP32A/B (huANP32A/B) poorly support the polymerase activity of avian influenza viruses (AIVs), thereby limiting interspecies transmission of AIVs from birds to humans. The SUMO-interacting...
科研进展 | 中国农业科学院哈尔滨兽医研究所王晓钧/陈化兰院士揭 …
2023年7月16日 · 该研究发现,禽流感病毒NS2蛋白通过促进禽vRNP组装和增强哺乳动物ANP32A/B-vRNP相互作用,有助于克服哺乳动物ANP30A/B介导的对禽vPol活性的限制。 而破坏NS2中的SIM完整性会损害禽流感病毒在哺乳动物宿主中的复制和致病性,但在鸟类宿主中不会。 研究结果表明,NS2是禽流感病毒对哺乳动物适应过程中的辅助因子。 最近的研究表明, 酸性核磷蛋白32(ANP32)家族蛋白质的物种特异性差异决定了鸟类vPol在哺乳动物细胞中的限制 …
Frontiers | Avian Influenza A Virus Polymerase Recruits Cellular …
2019年7月15日 · Additionally, we confirmed that in specific deletion of eIF4A3, the synthesis of reduced NS2 can significantly impair neo-synthetized viral ribonucleoprotein (vRNP) nuclear export. Taken together, our findings revealed that eIF4A3 is a key mediator of AIV polymerase activity, mRNA splicing, and spliced mRNA nuclear export.
Adv Sci丨华中农业大学金梅林/张强团队研究揭示NEP S-S-S基序磷酸化在vRNP …
2024年11月23日 · 流感病毒核糖核蛋白(vRNP)的核输出依赖于核输出受体染色体区域维持1 (CRM1)介导的核输出途径,由基因组RNA、病毒核蛋白(NP)和三计量RNA依赖的RNA聚合酶复合物组成,是病毒生命周期的重要步骤。 病毒核输出蛋白(NEP),又称非结构蛋白2 (NS2),在vRNP核输出中起关键作用。 根据目前vRNP核输出模型,vRNP通过形成“菊花链”复合物从细胞核中输出,其中NEP作为连接vRNP-M1(基质蛋白1)和CRM1-GTPase Ran-GTP的 …
2024年1月31日 · glutinin (HA) and polymerase of AIV, as well as nucleoprotein (NP), are the major viral determinants to overcome the mammalian cell bar - rier (2–4, 6). The IAV viral RNA polymerase (vPol) is a heterotrimer composed of the polymerase acidic(PA), polymerase basic 2 (PB2), and polymerase basic 1 (PB1), which forms viral ribonucleoprotein
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