Abstract:
:The small envelope protein (E) plays a role of central importance in the assembly of coronaviruses. This was initially established by studies demonstrating that cellular expression of only E protein and the membrane protein (M) was necessary and sufficient for the generation and release of virus-like particles. To investigate the role of E protein in the whole virus, we previously generated E gene mutants of mouse hepatitis virus (MHV) that were defective in viral growth and produced aberrantly assembled virions. Surprisingly, however, we were also able to isolate a viable MHV mutant (DeltaE) in which the entire E gene, as well as the nonessential upstream genes 4 and 5a, were deleted. We have now constructed an E knockout mutant that confirms that the highly defective phenotype of the DeltaE mutant is due to loss of the E gene. Additionally, we have created substitution mutants in which the MHV E gene was replaced by heterologous E genes from viruses spanning all three groups of the coronavirus family. Group 2 and 3 E proteins were readily exchangeable for that of MHV. However, the E protein of a group 1 coronavirus, transmissible gastroenteritis virus, became functional in MHV only after acquisition of particular mutations. Our results show that proteins encompassing a remarkably diverse range of primary amino acid sequences can provide E protein function in MHV. These findings suggest that E protein facilitates viral assembly in a manner that does not require E protein to make sequence-specific contacts with M protein.
journal_name
J Viroljournal_title
Journal of virologyauthors
Kuo L,Hurst KR,Masters PSdoi
10.1128/JVI.01577-06subject
Has Abstractpub_date
2007-03-01 00:00:00pages
2249-62issue
5eissn
0022-538Xissn
1098-5514pii
JVI.01577-06journal_volume
81pub_type
杂志文章abstract::Recombinant human metapneumovirus (HMPV) in which the SH, G, or M2 gene or open reading frame was deleted by reverse genetics was evaluated for replication and vaccine efficacy following topical administration to the respiratory tract of African green monkeys, a permissive primate host. Replication of the deltaSH viru...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.19.12608-12613.2005
更新日期:2005-10-01 00:00:00
abstract::Hepadnaviruses contain a relaxed circular DNA genome (RC-DNA) with discontinuities in both strands. Upon infectious entry into a host cell, this genome is converted into a covalently closed superhelical form (CCC-DNA), which later serves as the template for transcription. Here we examined whether the viral polymerase ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.8.4867-4874.1993
更新日期:1993-08-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.2.4.365-375.1968
更新日期:1968-04-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.61.10.3109-3113.1987
更新日期:1987-10-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01770-08
更新日期:2009-02-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00593-10
更新日期:2010-09-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.05859-11
更新日期:2011-11-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.3.1350-1356.1993
更新日期:1993-03-01 00:00:00
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pub_type: 杂志文章
doi:10.1128/jvi.77.21.11347-11356.2003
更新日期:2003-11-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00736-14
更新日期:2014-07-01 00:00:00
abstract::The distribtuion of various amino acid tRNA's in the 4S RNA components of avian myeloblastosis virus (AMV) and in 4S RNA prepared from chicken cmbryo cells, chicken myeloblasts, and chicken livers was determined. This was done by aminoacylating the 4S RNA samples with a mixture of 17 radioactive amino acids and subseq...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.16.6.1608-1614.1975
更新日期:1975-12-01 00:00:00
abstract::To date, no vaccine that is safe and effective against herpes simplex virus 2 (HSV-2) disease has been licensed. In this study, we evaluated a DNA prime-formalin-inactivated-HSV-2 (FI-HSV2) boost vaccine approach in the guinea pig model of acute and recurrent HSV-2 genital disease. Five groups of guinea pigs were immu...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02521-10
更新日期:2011-04-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01495-20
更新日期:2020-12-09 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.4.1823-1828.1991
更新日期:1991-04-01 00:00:00
abstract::Lysine-specific demethylase 1 (LSD1) targets cellular proteins, including histone H3, p53, E2F, and Dnmt1, and is involved in the regulation of gene expression, DNA replication, the cell cycle, and the DNA damage response. LSD1 catalyzes demethylation of histone H3K9 associated with herpes simplex virus 1 (HSV-1) imme...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00974-20
更新日期:2020-09-15 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01971-14
更新日期:2014-11-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.1.452-459.2003
更新日期:2003-01-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01414-07
更新日期:2007-11-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01177-06
更新日期:2006-11-01 00:00:00
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pub_type: 杂志文章
doi:10.1128/JVI.51.2.346-353.1984
更新日期:1984-08-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.78.9.4943-4946.2004
更新日期:2004-05-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01552-17
更新日期:2018-03-14 00:00:00
abstract::Virus-infected cells secrete a broad range of interferons (IFN) which confer resistance to yet uninfected cells by triggering the synthesis of antiviral factors. The relative contributions of the various IFN subtypes to innate immunity against virus infections remain elusive. IFN-alpha, IFN-beta, and other type I IFN ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00272-10
更新日期:2010-06-01 00:00:00
abstract::We present an antiviral-immunomodulatory therapeutic strategy involving the chemokine receptor antagonist Met-RANTES, which yields significant survival in the setting of an otherwise fatal respiratory virus infection. In previous work, we demonstrated that infection with the natural rodent pathogen pneumonia virus of ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.15.7984-7989.2004
更新日期:2004-08-01 00:00:00
abstract::Superinfection of Corynebacterium diphtheriae C7(beta) by heteroimmune phage gamma is productive, whereas superinfection by gamma-bin mutants is for the most part nonproductive. Exclusion of gamma-bin phage occurred after its DNA had penetrated and was partially expressed in the heteroimmune lysogen. All of the infect...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.36.2.526-532.1980
更新日期:1980-11-01 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:UNLABELLED:Development of a vaccine to prevent congenital cytomegalovirus infection is a major public health priority. Live vaccines attenuated through mutations targeting viral mechanisms responsible for evasion of host defense may be both safe and efficacious. Safety and vaccine efficacy were evaluated using a guinea...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01419-15
更新日期:2015-10-01 00:00:00
abstract::Given the current difficulties generating vaccine-induced neutralizing antibodies to human immunodeficiency virus (HIV), the focus of the vaccine community has shifted toward creating cytotoxic-T-lymphocyte (CTL)-based vaccines. Recent reports of CTL-based vaccine trials in macaques challenged with simian/human immuno...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.24.13348-13360.2003
更新日期:2003-12-01 00:00:00
abstract::The RNA-dependent RNA polymerase of influenza A virus is composed of three subunits that together synthesize all viral mRNAs and also replicate the viral genomic RNA segments (vRNAs) through intermediates known as cRNAs. Here we describe functional characterization of 16 site-directed mutants of one polymerase subunit...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.80.1.252-261.2006
更新日期:2006-01-01 00:00:00
abstract::Mouse neuroblastoma cells containing intracisternal type A particles were treated with iododeoxyuridine and dexamethasone to induce the release of type C oncornavirus particles. For 5 days after treatment, antigenic markers and DNA polymerase activities specific to particles of each of the two types were assayed in th...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.19.2.709-716.1976
更新日期:1976-08-01 00:00:00