Abstract:
:Unintegrated linear and closed circular DNAs of B- and N-tropic endogenous BALB/c murine leukemia virus (MuLV) were extracted from newly infected mouse cells and cleaved with EcoRI, XhoI, PvuI, HindIII, SalI, XbaI, KpnI, SmaI, and PstI restriction endonucleases. The DNA fragments were separated by electrophoresis and analyzed by the Southern blot hybridization procedure. EcoRI did not cleave the two genomes. A physical map of 15 cleavage sites on B- and N-tropic genomes was constructed with the other restriction endonucleases. Identical cleavage sites of B- and N-tropic MuLV DNAs were found with all these enzymes. However, the N-tropic linear genome was found to lack about 75 base pairs at each end of the molecule. PstI, KpnI, and SmaI recognize a cleavage site at both ends of the linear molecules. And sequences derived from the 5' end of the RNA genome were found in the third left end of the linear DNA and at its extreme right-end terminus, suggesting the presence of redundant sequences. Two species of closed circular viral DNA were observed. The larger species has the same size as the linear molecule and appears to be a circularized form of linear DNA. The smaller species contains sequences common to both the linear and the larger circular viral DNA but seems to be deleted from sequences present at either one or both ends of the linear DNA. Therefore, the general structure of the linear and circular DNA species of these B- and N-tropic endogenous BALB/c MuLV appears analogous to the structure found with other retroviruses.
journal_name
J Viroljournal_title
Journal of virologyauthors
Rassart E,Jolicoeur Pdoi
10.1128/JVI.35.3.812-823.1980subject
Has Abstractpub_date
1980-09-01 00:00:00pages
812-23issue
3eissn
0022-538Xissn
1098-5514journal_volume
35pub_type
杂志文章abstract::Diminished in vitro proliferation of human immunodeficiency virus type 1 (HIV-1)-specific CD4+T cells has been associated with HIV-1 viremia and declining CD4+ T-cell counts during chronic infection. To better understand this phenomenon, we examined whether HIV-1 Gag p24 antigen-induced CD4+ T-cell proliferation might...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.22.12638-12646.2004
更新日期:2004-11-01 00:00:00
abstract::Small aggregates of viral antigen were encountered in the nuclear matrix. The capsids did not tag with antibodies specific for the virus or for the host cell. This observation remains unexplained. Nuclear and cytoplasmic membranes, as well as the envelope of the virus, reacted with both types of antibodies and appear,...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.2.10.1172-1184.1968
更新日期:1968-10-01 00:00:00
abstract::Replication and transcription activator (RTA) (also referred to as ORF50), an immediate-early gene product of Kaposi's sarcoma-associated herpesvirus (KSHV)/(human herpesvirus 8), plays a critical role in balancing the viral life cycle between latency and lytic replication. RTA has been shown to act as a strong transc...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.17.9451-9462.2003
更新日期:2003-09-01 00:00:00
abstract::Three drug-dependent mutants of human rhinovirus 16 (HRV16) were characterized by sequence analyses of spontaneous mutant isolates and were genetically reconstructed from a parental cDNA plasmid. These mutants formed plaques in the presence but not in the absence of the selecting antiviral drug, WIN 52035, which binds...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.2.1210-1218.1998
更新日期:1998-02-01 00:00:00
abstract::We investigated how the broadly neutralizing monoclonal antibody 2F5 affects the human immunodeficiency virus type 1 envelope glycoprotein as it undergoes receptor-induced conformational changes and show that 2F5 binds both native and fusion-intermediate conformations, suggesting inhibition of a late step in virus ent...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.78.5.2627-2631.2004
更新日期:2004-03-01 00:00:00
abstract::The second of three short upstream open reading frames (uORF2) in the transcript leader of the human cytomegalovirus gp48 (gpUL4) virion glycoprotein gene inhibits downstream translation approximately 10-fold. Remarkably, this inhibition depends on the amino acid coding information of uORF2. In the current studies we ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.2.1030-1036.1995
更新日期:1995-02-01 00:00:00
abstract::CD4C/HIV(nef) transgenic (Tg) mice express Nef in CD4+ T cells and in the cells of the macrophage/monocyte/dendritic lineage, and they develop an AIDS-like disease similar to human AIDS. In these mice, Nef is constitutively expressed throughout life. To rule out the contribution of any developmental defects caused by ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01466-09
更新日期:2009-11-01 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::The recent increase in human cases of influenza A H3N2 variant virus [A(H3N2)v] highlights the need to assess whether seasonal influenza vaccination provides cross-protection against A(H3N2)v virus. Our data demonstrate that the 2011-2012 trivalent inactivated influenza vaccine (TIV) protected ferrets against homologo...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02625-12
更新日期:2013-01-01 00:00:00
abstract::The internal structural proteins of retroviruses are proteolytically processed from the Gag polyprotein, which alone is able to assemble into virus-like particles when expressed in cells. All Gag proteins contain domains corresponding to the three structural proteins MA, CA, and NC. We have expressed the CA and NC dom...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.10.6487-6497.1995
更新日期:1995-10-01 00:00:00
abstract::West Nile virus (WNV) is a neurotropic flavivirus and the leading cause of mosquito-borne encephalitis in the United States. Recent studies in humans have found that dysfunctional T cell responses strongly correlate with development of severe WNV neuroinvasive disease. However, the contributions of human dendritic cel...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00664-19
更新日期:2019-11-13 00:00:00
abstract::Herpes simplex virus (HSV) glycoprotein B (gB) is an integral part of the multicomponent fusion system required for virus entry and cell-cell fusion. Here we investigated the mechanism of viral neutralization by the monoclonal antibody (MAb) 2c, which specifically recognizes the gB of HSV type 1 (HSV-1) and HSV-2. Bin...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01924-10
更新日期:2011-02-01 00:00:00
abstract:UNLABELLED:In a genome-wide small interfering RNA (siRNA) screen, we recently identified the interferon (IFN)-inducible protein 35 (IFI35; also known as IFP35) as a factor required for vesicular stomatitis virus (VSV) infection. Studies reported here were conducted to further understand the role and requirement of IFI3...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03202-13
更新日期:2014-03-01 00:00:00
abstract::H9N2 avian influenza virus (AIV) has an extended host range, but the molecular basis underlying H9N2 AIV transmission to mammals remains unclear. We isolated more than 900 H9N2 AIVs in our 3-year surveillance in live bird markets in China from 2009 to 2012. Thirty-seven representative isolates were selected for furthe...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01141-16
更新日期:2016-10-14 00:00:00
abstract:UNLABELLED:As a herpesvirus, Epstein-Barr virus (EBV) establishes a latent infection that can periodically undergo reactivation, resulting in lytic replication and the production of new infectious virus. Latent membrane protein-1 (LMP1), the principal viral oncoprotein, is a latency-associated protein implicated in reg...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00711-15
更新日期:2015-08-01 00:00:00
abstract::The genome of all densoviruses (DNVs) so far isolated from mosquitoes or mosquito cell lines consists of a 4-kb single-stranded DNA molecule with a monosense organization (genus Brevidensovirus, subfamily Densovirinae). We previously reported the isolation of a Culex pipiens DNV (CpDNV) that differs significantly from...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00524-09
更新日期:2009-07-01 00:00:00
abstract:UNLABELLED:The interferon (IFN)-mediated antiviral response is a central aspect of host defense; however, viruses have evolved multiple strategies to counteract IFN-mediated responses in order to successfully infect the host. Herpes simplex virus 1 (HSV-1), a typical human-restricted DNA virus, is capable of counteract...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00186-16
更新日期:2016-05-27 00:00:00
abstract::The VP24 protein plays an essential, albeit poorly understood role in the filovirus life cycle. VP24 is only 30% identical between Marburg virus and the ebolaviruses. Furthermore, VP24 from the ebolaviruses is immunosuppressive, while that of Marburg virus is not. The crystal structure of Marburg virus VP24, presented...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03565-13
更新日期:2014-05-01 00:00:00
abstract::Replicase gene expression by the human coronavirus 229E involves the synthesis of two large polyproteins, pp1a and pp1ab. Experimental evidence suggests that these precursor molecules are subject to extensive proteolytic processing. In this study, we show that a chymotrypsin-like enzyme, the virus-encoded 3C-like prot...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.1.177-185.1999
更新日期:1999-01-01 00:00:00
abstract::We have resolved two electrophoretic species of the major DNA-binding protein, infected cell polypeptide 8 (ICP8), encoded by herpes simplex virus 1. In pulse-chase experiments, we observed the conversion of the ICP8a form, the slower migrating species, to the faster migrating form, ICP8b. Thus, the two species appear...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.44.2.736-741.1982
更新日期:1982-11-01 00:00:00
abstract::High-risk human papillomavirus type 16 (HPV16) is the primary causative agent of cervical cancer and therefore is responsible for significant morbidity and mortality worldwide. Cellular transformation is mediated directly by the expression of viral oncogenes, the least characterized of which, E5, subverts cellular pro...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.06243-11
更新日期:2012-05-01 00:00:00
abstract::We analyzed control sequences of the human papovavirus JC virus (JCV) to define the cis-acting elements that regulate specific expression of the viral early region genes in glial cells. Nuclear run-on transcription, S1 analysis, and chloramphenicol acetyltransferase enzyme activity in a transient transfection assay es...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.63.1.463-466.1989
更新日期:1989-01-01 00:00:00
abstract::Herpes simplex virus 1 (HSV-1) genomes are associated with the repressive heterochromatic marks H3K9me2/me3 and H3K27me3 during latency. Previous studies have demonstrated that inhibitors of H3K9me2/me3 histone demethylases reduce the ability of HSV-1 to reactivate from latency. Here we demonstrate that GSK-J4, a spec...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03052-14
更新日期:2015-03-01 00:00:00
abstract::Mus dunni endogenous virus (MDEV) is activated from cells of the Asian wild mouse M. dunni (also known as Mus terricolor) in response to treatment with either 5-iodo-2'-deoxyuridine or hydrocortisone. MDEV represents a new murine retrovirus interference group and thus appears to use a different receptor for entry into...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.6.4663-4670.1997
更新日期:1997-06-01 00:00:00
abstract::We studied the capacity of active immunization of rhesus monkeys with HIV-1 envelope protein (Env) to induce primary virus cross-reactive neutralizing antibodies to prevent infection following intravenous challenge with simian-human immunodeficiency virus (SHIV). Monkeys were immunized with the human immunodeficiency ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.6.3358-3369.2005
更新日期:2005-03-01 00:00:00
abstract::We have studied the fate of CD4 in CEM T cells expressing a human immunodeficiency virus type 1 HIV-1 Nef protein. Nef triggered a rapid endocytosis and a degradation of CD4, while most of the p56lck was upheld at the cell membrane. In the presence of Nef, CD4 accumulated in acidic intracellular vesicles that were not...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.1.528-533.1995
更新日期:1995-01-01 00:00:00
abstract::The major adenovirus (Ad) capsid proteins hexon, penton, and fiber influence the efficiency and tropism of gene transduction by Ad vectors. Fiber is the high-affinity receptor binding protein that serves to mediate cell attachment in vitro when using coxsackie-adenovirus receptor (CAR)-containing cell lines. This cont...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.18.11627-11637.2005
更新日期:2005-09-01 00:00:00
abstract::The human T-cell leukemia virus (HTLV) Rex protein is essential for efficient expression of the viral structural and enzymatic gene products. In this study, we assessed the role of the HTLV-2 rex gene in viral RNA expression and Gag protein production. Following transfection of human JM4 T cells with wild-type and rex...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.10.8112-8119.1999
更新日期:1999-10-01 00:00:00
abstract::The movement protein (MP) of Tobacco mosaic virus mediates the cell-to-cell transport of viral RNA through plasmodesmata, cytoplasmic cell wall channels for direct cell-to-cell communication between adjacent cells. Previous in vivo studies demonstrated that the RNA transport function of the protein correlates with its...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00254-06
更新日期:2006-06-01 00:00:00
abstract::Infectious bursal disease (IBD) is an acute, highly contagious, and immunosuppressive avian disease caused by IBD virus (IBDV). Although IBDV-induced host cell apoptosis has been established, the underlying molecular mechanism is still unclear. We report here that IBDV viral protein 5 (VP5) is a major apoptosis induce...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.06104-11
更新日期:2012-02-01 00:00:00