Asymmetry in icosahedral viruses

IF 5.1 2区 医学 Q1 VIROLOGY Current opinion in virology Pub Date : 2019-06-01 DOI:10.1016/j.coviro.2019.05.006
Daniel J Goetschius , Colin R Parrish , Susan Hafenstein
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引用次数: 8

Abstract

Although icosahedral viruses have obvious and highly symmetrical features, asymmetric structural elements are also present. Asymmetric features may be inherent since the genome and location of minor capsid proteins are typically incorporated without adhering to icosahedral symmetry. Asymmetry also develops during the virus life cycle in order to accomplish key functions such as genome packaging, release, and organization. However, resolving asymmetric features complicates image processing during single-particle cryoEM analysis. This review summarizes the current state of knowledge regarding asymmetric structural features with specific examples drawn from members of picornaviridae, parvoviradae, microviradae, and leviviridae.

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二十面体病毒的不对称性
虽然二十面体病毒具有明显的高度对称特征,但也存在不对称结构元素。不对称特征可能是固有的,因为基因组和次要衣壳蛋白的位置通常不遵循二十面体对称。在病毒生命周期中,为了完成基因组的包装、释放和组织等关键功能,也会形成不对称。然而,在单粒子低温电镜分析过程中,解决不对称特征使图像处理复杂化。本文通过对小病毒科、细小病毒科、微病毒科和活病毒科成员的具体例子,总结了目前关于非对称结构特征的知识现状。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
11.80
自引率
5.10%
发文量
76
审稿时长
83 days
期刊介绍: Current Opinion in Virology (COVIRO) is a systematic review journal that aims to provide specialists with a unique and educational platform to keep up to date with the expanding volume of information published in the field of virology. It publishes 6 issues per year covering the following 11 sections, each of which is reviewed once a year: Emerging viruses: interspecies transmission; Viral immunology; Viral pathogenesis; Preventive and therapeutic vaccines; Antiviral strategies; Virus structure and expression; Animal models for viral diseases; Engineering for viral resistance; Viruses and cancer; Virus vector interactions. There is also a section that changes every year to reflect hot topics in the field.
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