Abstract:
:The mRNAs of Bunyamwera virus (BUNV), the prototype of the Bunyaviridae family, possess a 5' cap structure but lack a 3' poly(A) tail, a common feature of eukaryotic mRNAs that greatly enhances translation efficiency. Viral mRNAs also contain untranslated regions (UTRs) that flank the coding sequence. Using model virus-like mRNAs that harbor the Renilla luciferase reporter gene, we found that the 3' UTR of the BUNV small-segment mRNA mediated efficient translation in the absence of a poly(A) tail. Viral UTRs did not increase RNA stability, and polyadenylation did not significantly enhance reporter activity. Translation of virus-like mRNAs in transfected cells was unaffected by knockdown of poly(A)-binding protein (PABP) but was markedly reduced by depletion of eukaryotic initiation factor 4G, suggesting a PABP-independent process for translation initiation. In BUNV-infected cells, translation of polyadenylated but not virus-like mRNAs was inhibited. Furthermore, we demonstrate that the viral nucleocapsid protein binds to, and colocalizes with, PABP in the cytoplasm early in infection, followed by nuclear retention of PABP. Our results suggest that BUNV corrupts PABP function in order to inhibit translation of polyadenylated cellular mRNAs while its own mRNAs are translated in a PABP-independent process.
journal_name
J Viroljournal_title
Journal of virologyauthors
Blakqori G,van Knippenberg I,Elliott RMdoi
10.1128/JVI.02201-08subject
Has Abstractpub_date
2009-04-01 00:00:00pages
3637-46issue
8eissn
0022-538Xissn
1098-5514pii
JVI.02201-08journal_volume
83pub_type
杂志文章abstract::Toroviruses (family Coronaviridae, order Nidovirales) are enveloped, positive-stranded RNA viruses that have been implicated in enteric disease in cattle and possibly in humans. Despite their potential veterinary and clinical relevance, little is known about torovirus epidemiology and molecular genetics. Here, we pres...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.17.9567-9577.2003
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abstract::The initiation of human immunodeficiency virus type 1 (HIV-1) reverse transcription occurs at a site in the viral RNA genome which is designated the primer-binding site (PBS). The HIV-1 PBS is an 18-nucleotide sequence that is complementary to the 3'-terminal 18 nucleotides of tRNA(3Lys), which is used as the primer f...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.10.6021-6029.1995
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journal_title:Journal of virology
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pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.7.3192-3198.1990
更新日期:1990-07-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.17.11496-11500.2005
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pub_type: 杂志文章
doi:10.1128/JVI.02397-05
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.62.10.3779-3788.1988
更新日期:1988-10-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.9.5640-5649.1995
更新日期:1995-09-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.12.10146-10157.1999
更新日期:1999-12-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.24.2.651-661.1977
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journal_title:Journal of virology
pub_type: 杂志文章
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.63.2.974-977.1989
更新日期:1989-02-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.46.1.196-203.1983
更新日期:1983-04-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01880-15
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journal_title:Journal of virology
pub_type: 杂志文章
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doi:10.1128/jvi.74.7.3141-3148.2000
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pub_type: 杂志文章
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更新日期:2001-06-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:2012-09-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.4.1675-1682.1990
更新日期:1990-04-01 00:00:00
abstract::Human T-cell lymphotropic virus type 1 (HTLV-1) is transmitted through a viral synapse and enters target cells via interaction with the glucose transporter GLUT1. Here, we show that Neuropilin-1 (NRP1), the receptor for semaphorin-3A and VEGF-A165 and a member of the immune synapse, is also a physical and functional p...
journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:2006-07-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.06967-11
更新日期:2012-04-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.43.2.482-488.1982
更新日期:1982-08-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.4.2.117-122.1969
更新日期:1969-08-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.18.8692-8699.2000
更新日期:2000-09-01 00:00:00
abstract::The emergence of antiretroviral (ARV) drug-resistant human immunodeficiency virus type 1 (HIV-1) quasispecies is a major cause of treatment failure. These variants are usually replaced by drug-sensitive ones when the selective pressure of the drugs is removed, as the former have reduced fitness in a drug-free environm...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.14.7000-7009.2002
更新日期:2002-07-01 00:00:00
abstract::Transient lymphopenia is a hallmark of measles virus (MV)-induced immunosuppression. To address to what extent replenishment of the peripheral lymphocyte compartment from bone marrow (BM) progenitor/stem cells might be affected, we analyzed the interaction of wild-type MV with hematopoietic stem and progenitor cells (...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00532-11
更新日期:2011-08-01 00:00:00