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TitleStructure of human cytomegalovirus virion reveals host tRNA binding to capsid-associated tegument protein pp150.
Journal, issue, pagesNat Commun, Vol. 12, Issue 1, Page 5513, Year 2021
Publish dateSep 17, 2021
AuthorsYun-Tao Liu / David Strugatsky / Wei Liu / Z Hong Zhou /
PubMed AbstractUnder the Baltimore nucleic acid-based virus classification scheme, the herpesvirus human cytomegalovirus (HCMV) is a Class I virus, meaning that it contains a double-stranded DNA genome-and no RNA. ...Under the Baltimore nucleic acid-based virus classification scheme, the herpesvirus human cytomegalovirus (HCMV) is a Class I virus, meaning that it contains a double-stranded DNA genome-and no RNA. Here, we report sub-particle cryoEM reconstructions of HCMV virions at 2.9 Å resolution revealing structures resembling non-coding transfer RNAs (tRNAs) associated with the virion's capsid-bound tegument protein, pp150. Through deep sequencing, we show that these RNA sequences match human tRNAs, and we built atomic models using the most abundant tRNA species. Based on our models, tRNA recruitment is mediated by the electrostatic interactions between tRNA phosphate groups and the helix-loop-helix motif of HCMV pp150. The specificity of these interactions may explain the absence of such tRNA densities in murine cytomegalovirus and other human herpesviruses.
External linksNat Commun / PubMed:34535641 / PubMed Central
MethodsEM (single particle)
Resolution2.9 - 3.6 Å
Structure data

EMDB-23376:
Structure of human transfer RNA visualized in the cytomegalovirus, a DNA virus
Method: EM (single particle) / Resolution: 3.2 Å

EMDB-23377:
Structure of human transfer RNA visualized in the cytomegalovirus, a DNA virus
Method: EM (single particle) / Resolution: 3.2 Å

23386

7liv

EMDB-23386, PDB-7liv:
Structure of human transfer RNA visualized in the cytomegalovirus, a DNA virus
Method: EM (single particle) / Resolution: 3.6 Å

23388

7lj3

EMDB-23388, PDB-7lj3:
Structure of human transfer RNA visualized in the cytomegalovirus, a DNA virus
Method: EM (single particle) / Resolution: 2.9 Å

Source
  • Human herpesvirus 5 strain AD169, HHV-5
  • homo sapiens (human)
  • human cytomegalovirus (strain ad169)
KeywordsVIRUS / HCMV / tRNA

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