期刊
STRUCTURE
卷 24, 期 4, 页码 528-536出版社
CELL PRESS
DOI: 10.1016/j.str.2016.02.008
关键词
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资金
- Wellcome Trust [102572/B/13/Z, 1052221/Z/14/Z, 096685/Z/11/Z]
- MRC [MR/K012665/1]
- Yorkshire Kidney Research Fund
- Kidney Research UK [RP25/2013]
- [090932/Z/09/Z]
- [094232/Z/10/Z]
- Kidney Research UK [ST_006_20151127, RP25/2013, ST4/2014] Funding Source: researchfish
- Medical Research Council [MR/K012665/1] Funding Source: researchfish
- Wellcome Trust [096685/Z/11/Z] Funding Source: Wellcome Trust
BK polyomavirus is the causative agent of several diseases in transplant patients and the immunosuppressed. In order to better understand the structure and life cycle of BK, we produced infectious virions and VP1-only virus-like particles in cell culture, and determined their three-dimensional structures using cryo-electron microscopy (EM) and single-particle image processing. The resulting 7.6-angstrom resolution structure of BK and 9.1-angstrom resolution of the virus-like particles are the highest-resolution cryo-EM structures of any polyomavirus. These structures confirm that the architecture of the major structural protein components of these human polyomaviruses are similar to previous structures from other hosts, but give new insight into the location and role of the enigmatic minor structural proteins, VP2 and VP3. We also observe two shells of electron density, which we attribute to a structurally ordered part of the viral genome, and discrete contacts between this density and both VP1 and the minor capsid proteins.
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