Abstract:
UNLABELLED:The noncovalent interactions that mediate trimerization of the influenza hemagglutinin (HA) are important determinants of its biological activities. Recent studies have demonstrated that mutations in the HA trimer interface affect the thermal and pH sensitivities of HA, suggesting a possible impact on vaccine stability (). We used size exclusion chromatography analysis of recombinant HA ectodomain to compare the differences among recombinant trimeric HA proteins from early 2009 pandemic H1N1 viruses, which dissociate to monomers, with those of more recent virus HAs that can be expressed as trimers. We analyzed differences among the HA sequences and identified intermolecular interactions mediated by the residue at position 374 (HA0 numbering) of the HA2 subdomain as critical for HA trimer stability. Crystallographic analyses of HA from the recent H1N1 virus A/Washington/5/2011 highlight the structural basis for this observed phenotype. It remains to be seen whether more recent viruses with this mutation will yield more stable vaccines in the future. IMPORTANCE:Hemagglutinins from the early 2009 H1N1 pandemic viruses are unable to maintain a trimeric complex when expressed in a recombinant system. However, HAs from 2010 and 2011 strains are more stable, and our work highlights that the improvement in stability can be attributed to an E374K substitution in the HA2 subunit of the stalk that emerged naturally in the circulating viruses.
journal_name
J Viroljournal_title
Journal of virologyauthors
Yang H,Chang JC,Guo Z,Carney PJ,Shore DA,Donis RO,Cox NJ,Villanueva JM,Klimov AI,Stevens Jdoi
10.1128/JVI.02278-13subject
Has Abstractpub_date
2014-05-01 00:00:00pages
4828-38issue
9eissn
0022-538Xissn
1098-5514pii
JVI.02278-13journal_volume
88pub_type
杂志文章abstract::Meq is the major Marek's disease virus (MDV)-encoded oncoprotein and is essential for T-cell lymphomagenesis. Meq and several noncoding RNAs, including three microRNA (MiR) clusters, are expressed from the repeats of the MDV genome during latent infection of T cells. To investigate the state of the chromatin in this a...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.06113-11
更新日期:2012-02-01 00:00:00
abstract::Caprine arthritis encephalitis virus (CAEV) is a lentivirus closely related to visna virus and more distantly to other lentiviruses, such as human immunodeficiency virus. The genomes of visna virus and CAEV contain a tat gene encoding a protein able to weakly transactivate its own long terminal repeat, suggesting that...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.9.5445-5454.1995
更新日期:1995-09-01 00:00:00
abstract::Kaposi's sarcoma-associated herpesvirus (KSHV) LANA is an 1,162-amino-acid protein that tethers terminal repeat (TR) DNA to mitotic chromosomes to mediate episome persistence in dividing cells. C-terminal LANA self-associates to bind TR DNA. LANA contains independent N- and C-terminal chromosome binding regions. N-ter...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02395-08
更新日期:2009-05-01 00:00:00
abstract::Biological and genetic variability is a prominent feature of human immunodeficiency virus (HIV) strains, especially in tropism, syncytium formation, and replicative capacity. To determine whether there were variable host cell effects on HIV replication in monocytes, three different strains of low-passage-number monocy...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.11.7792-7803.1996
更新日期:1996-11-01 00:00:00
abstract:UNLABELLED:We searched The Cancer Genome Atlas (TCGA) database for viruses by comparing non-human reads present in transcriptome sequencing (RNA-Seq) and whole-exome sequencing (WXS) data to viral sequence databases. Human papillomavirus 18 (HPV18) is an etiologic agent of cervical cancer, and as expected, we found rob...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03365-14
更新日期:2015-04-01 00:00:00
abstract::The major immediate-early (MIE) gene of human cytomegalovirus (HCMV) expresses IE86, IE72, IE55, and IE18 mRNA by differential splicing. Reverse transcription-PCR with IE72-specific primers generated an 0.65-kb cDNA from HCMV-infected fibroblast RNA, which does not correspond to any known MIE cDNA. Nucleotide sequenci...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.7.3158-3167.2002
更新日期:2002-04-01 00:00:00
abstract::Tetherin/BST-2 is a host-encoded protein that restricts a wide diversity of viruses at the stage of virion release. However, viruses have evolved antagonists of Tetherin, including the Vpu and Nef proteins of primate lentiviruses. Like other host genes subject to viral antagonism, primate Tetherin genes have evolved u...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00468-10
更新日期:2010-07-01 00:00:00
abstract::We have recently reported the isolation and molecular cloning of a human immunodeficiency virus type 1 isolate (HIV-1 DH125) that exhibits rapid replication kinetics and marked cytopathicity in both human and chimpanzee peripheral blood mononuclear cells (PBMC). To identify the viral determinants responsible for infec...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.10.7318-7321.1996
更新日期:1996-10-01 00:00:00
abstract::Polyomavirus large T antigen has an N-terminal domain of approximately 260 amino acids which can immortalize primary cells but lacks sequences known to be required for DNA binding and replication. Treatment of full-length large T with either V8 protease or chymotrypsin yields an N-terminal fragment of 36 to 40 kDa and...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.68.2.668-673.1994
更新日期:1994-02-01 00:00:00
abstract::The human immunodeficiency virus (HIV) and the closely related simian immunodeficiency virus (SIV) induce profound immune dysfunction in primate species. The present studies show that cell populations infected in vitro with SIV exhibit increases in major histocompatibility complex (MHC) class II antigen expression. Ce...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.61.5.1421-1426.1987
更新日期:1987-05-01 00:00:00
abstract::During viral infection, inflammation and recovery are tightly controlled by competing proinflammatory and regulatory immune pathways. Respiratory syncytial virus (RSV) is the leading global cause of infantile bronchiolitis, which is associated with recurrent wheeze and asthma diagnosis in later life. Th2-driven diseas...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01295-13
更新日期:2013-10-01 00:00:00
abstract::Infection of macaque monkeys with simian immunodeficiency virus (SIV) is probably the best animal model currently available for studying acquired immunodeficiency syndrome. In this report, we describe three infectious molecular clones of SIVmac and one of human immunodeficiency virus type 2 (HIV-2) and their use in th...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.62.12.4691-4696.1988
更新日期:1988-12-01 00:00:00
abstract::By preannealing a radioactive, representative Moloney murine leukemia virus (M-MuLV) cDNA with large excesses of AKR 70S viral RNA, an M-MuLV-specific cDNA has been prepared. When hybridized to restriction enzyme fragments of M-MuLV-infected mouse cell DNA, the preannealed probe recognizes integrated M-MuLV DNA and do...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.33.3.1074-1082.1980
更新日期:1980-03-01 00:00:00
abstract::A single phosphorylation event at T-antigen residue Thr124 regulates initiation of simian virus 40 DNA replication. To explore this regulatory process, a series of peptides were synthesized, centered on Thr124. These peptides contain a nuclear localization signal (NLS) and a recognition site for cyclin/Cdk kinases. Wh...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.23.11785-11792.2002
更新日期:2002-12-01 00:00:00
abstract::Secondary cultures of chicken embryo fibroblasts were infected with the Schmidt Ruppin strain of Rous sarcoma virus (RSV). Five days after infection, the medium was replaced at 2-h intervals with phosphate-free Eagle medium containing 50 muCi of [32P]orthophosphate per ml. Virus was collected by centrifugation, and th...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.15.1.161-166.1975
更新日期:1975-01-01 00:00:00
abstract::The recent advent of genome sequences as the only source available to classify many newly discovered viruses challenges the development of virus taxonomy by expert virologists who traditionally rely on extensive virus characterization. In this proof-of-principle study, we address this issue by presenting a computation...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.07173-11
更新日期:2012-04-01 00:00:00
abstract::Using quantitative RNase protection assays, we have monitored the appearance of mRNAs generated during lytic infection of tightly synchronized murine cells by the autonomous parvovirus minute virus of mice. Our results demonstrate that transcripts from the P4 promoter can be detected prior to those from the P39 promot...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.62.4.1448-1451.1988
更新日期:1988-04-01 00:00:00
abstract:UNLABELLED:Microtubule transport of circovirus from the periphery of the cell to the nucleus is essential for viral replication in early infection. How the microtubule is recruited to the viral cargo remains unclear. In this study, we observed that circovirus trafficking is dependent on microtubule polymerization and t...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03117-14
更新日期:2015-03-01 00:00:00
abstract::Adult T-cell leukemia (ATL) is caused by human T-cell leukemia virus type 1 (HTLV-1). Elevated expression of vascular endothelial growth factor (VEGF) in ATL patients is associated with leukemic cell invasion and infiltration in different organs. The regulatory protein Tax 1 encoded by HTLV-1 plays a pivotal role in T...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02166-09
更新日期:2010-05-01 00:00:00
abstract::An adenovirus vector encoding murine Fas ligand (mFasL) under an inducible control was derived. In vivo ectopic expression of mFasL in murine livers induced an inflammatory cellular infiltration. Furthermore, ectopic expression of mFasL by myocytes did not allow prolonged vector-mediated transgene expression. Thus, ec...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.3.2483-2490.1998
更新日期:1998-03-01 00:00:00
abstract::The current studies demonstrate complex and seemingly contradictory effects by gamma interferon (IFN-gamma) on Friend virus (FV) infection. Both temporal and tissue-specific effects were observed. During the first week of infection, IFN-gamma-deficiency caused increased levels of FV infection in multiple tissues. Surp...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.5.2225-2232.2002
更新日期:2002-03-01 00:00:00
abstract::Baculoviruses, although they infect insects in nature, can transduce a wide variety of mammalian cells and are therefore promising gene therapy vectors. However, baculovirus transduction into many mammalian cells is very inefficient, and the limiting stages and factors remain unknown. An important finding is that a sh...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00709-19
更新日期:2019-07-17 00:00:00
abstract::Hepatitis B virus (HBV) DNA clones were propagated from 57 carriers with antibody to hepatitis B e antigen (HBeAg) and sequenced within nucleotides (nt) 1685 to 1926 including the core promoter (nt 1742 to 1849) and the pre-C region (nt 1814 to 1900). Mutations in the core promoter or those in the pre-C region, or bot...
journal_title:Journal of virology
pub_type: 临床试验,杂志文章
doi:10.1128/JVI.68.12.8102-8110.1994
更新日期:1994-12-01 00:00:00
abstract::The murine monoclonal antibody (MAb) 5A8, which is reactive with domain 2 of CD4, blocks human immunodeficiency virus type 1 (HIV-1) infection and syncytium formation of CD4+ cells (L. C. Burkly, D. Olson, R. Shapiro, G. Winkler, J. J. Rosa, D. W. Thomas, C. Williams, and P. Chisholm, J. Immunol., in press). Here we s...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.66.8.4784-4793.1992
更新日期:1992-08-01 00:00:00
abstract::In this study, we document that efficient interaction between arenavirus nucleoprotein (NP) and RNA-dependent RNA polymerase (L protein), the two trans-acting viral factors required for both virus RNA replication and gene transcription, requires the presence of virus-specific RNA sequences located within the untransla...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00103-15
更新日期:2015-05-01 00:00:00
abstract::A series of plasmids containing hepatitis A virus (HAV) cDNA was constructed such that positive-strand HAV RNA could be transcribed with T7 RNA polymerase. The plasmids differed in the number of 5'-terminal nucleotides representing the junctions between vectors and HAV sequences that were present in the transcripts. W...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.5.2757-2760.1991
更新日期:1991-05-01 00:00:00
abstract::A method to study the function of individual African swine fever virus (ASFV) gene products utilizing the Escherichia coli lac repressor-operator system has been developed. Recombinant viruses containing both the lacI gene encoding the lac repressor and a strong virus late promoter modified by the insertion of one or ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.4.3185-3195.1998
更新日期:1998-04-01 00:00:00
abstract::The large T antigen encoded by simian virus 40 (SV40) plays essential roles in the infection of permissive cells, leading to production of progeny virions, and in the infection of nonpermissive cells, leading to malignant transformation. Primary mouse embryo fibroblasts (MEFs) are nonpermissive for SV40, and infection...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.12.6872-6880.1991
更新日期:1991-12-01 00:00:00
abstract::Infection of quiescent cells by human cytomegalovirus (HCMV) elicits severe cell cycle deregulation, resulting in a G(1)/S arrest, which can be partly attributed to the inactivation of the anaphase-promoting complex (APC). As we previously reported, the premature phosphorylation of its coactivator Cdh1 and/or the diss...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01260-10
更新日期:2010-10-01 00:00:00
abstract::Yaba tumor poxvirus deoxyribonucleic acid (DNA) has a density of 1.6905 in CsCl and its T(m) value in 0.015 m citrate in saline is 82.3. The guanine plus cytosine content estimated from these properties was taken to be 32.5 +/- 0.5%, a value 2 to 3% less than for DNA from other poxviruses reported to date. ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.3.2.114-118.1969
更新日期:1969-02-01 00:00:00