Abstract:
:The herpes simplex virus type 1 (HSV-1) capsid is a T=16 icosahedral shell that forms in the nuclei of infected cells. Capsid assembly also occurs in vitro in reaction mixtures created from insect cell extracts containing recombinant baculovirus-expressed HSV-1 capsid proteins. During capsid formation, the major capsid protein, VP5, and the scaffolding protein, pre-VP22a, condense to form structures that are extended into procapsids by addition of the triplex proteins, VP19C and VP23. We investigated whether triplex proteins bind to the major capsid-scaffold protein complexes as separate polypeptides or as preformed triplexes. Assembly products from reactions lacking one triplex protein were immunoprecipitated and examined for the presence of the other. The results showed that neither triplex protein bound unless both were present, suggesting that interaction between VP19C and VP23 is required before either protein can participate in the assembly process. Sucrose density gradient analysis was employed to determine the sedimentation coefficients of VP19C, VP23, and VP19C-VP23 complexes. The results showed that the two proteins formed a complex with a sedimentation coefficient of 7.2S, a value that is consistent with formation of a VP19C-VP23(2) heterotrimer. Furthermore, VP23 was observed to have a sedimentation coefficient of 4.9S, suggesting that this protein exists as a dimer in solution. Deletion analysis of VP19C revealed two domains that may be required for attachment of the triplex to major capsid-scaffold protein complexes; none of the deletions disrupted interaction of VP19C with VP23. We propose that preformed triplexes (VP19C-VP23(2) heterotrimers) interact with major capsid-scaffold protein complexes during assembly of the HSV-1 capsid.
journal_name
J Viroljournal_title
Journal of virologyauthors
Spencer JV,Newcomb WW,Thomsen DR,Homa FL,Brown JCdoi
10.1128/JVI.72.5.3944-3951.1998subject
Has Abstractpub_date
1998-05-01 00:00:00pages
3944-51issue
5eissn
0022-538Xissn
1098-5514journal_volume
72pub_type
杂志文章abstract::The primary herpes simplex virus type 2 (HSV-2) latency-associated transcript (LAT) promoter influences LAT expression and rates of virus reactivation. We explored the biological importance of particular neuronally responsive regions within the promoter by creating new recombinant viruses bearing a targeted deletion (...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.10.7903-7910.1997
更新日期:1997-10-01 00:00:00
abstract::Herpesvirus saimiri (HVS) is the prototype gamma-2 herpesvirus, which naturally infects the squirrel monkey Saimiri sciureus, causing an asymptomatic but persistent infection. The latent phase of gamma-2 herpesviruses is characterized by their ability to persist in a dividing cell population while expressing a limited...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02171-06
更新日期:2007-04-01 00:00:00
abstract::The retinoblastoma tumor suppressor protein (pRb) can associate with the transforming proteins of several DNA tumor viruses, including the large T antigen encoded by polyomavirus (Py T Ag). Although pRb function is critical for regulating progression from G1 to S phase, a role for pRb in S phase has not been demonstra...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.4.3004-3013.1999
更新日期:1999-04-01 00:00:00
abstract::Increasing evidence suggests that the generation of cytotoxic T-lymphocyte (CTL) responses specific for a diversity of viral epitopes will be needed for an effective human immunodeficiency virus type 1 (HIV-1) vaccine. Here, we determine the frequencies of CTL responses specific for the simian immunodeficiency virus G...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.5.2462-2467.2001
更新日期:2001-03-01 00:00:00
abstract::Acute measles in children can be prevented by immunization with the live attenuated measles vaccine virus. Although immunization is able to induce CD4 and CD8 T cells as well as neutralizing antibodies, only the latter have been correlated with protective immunity. CD8 T cells, however, have been documented to be impo...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00160-07
更新日期:2007-08-01 00:00:00
abstract::Macrophages perform a central role in the pathogenesis of human immunodeficiency virus type 1 (HIV-1) infection and have been implicated as the cell type most prominent in the development of central nervous system impairment. In this study, we evaluated the effect of interaction between macrophages and endothelial cel...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.4.2133-2139.1995
更新日期:1995-04-01 00:00:00
abstract:UNLABELLED:Virus entry into cells is a multistep process that often requires the subversion of subcellular machineries. A more complete understanding of these steps is necessary to develop new antiviral strategies. While studying the potential role of the actin network and one of its master regulators, the small GTPase...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00103-16
更新日期:2016-04-14 00:00:00
abstract:UNLABELLED:Following retrovirus entry, the viral capsid (CA) disassembles into its component capsid proteins. The rate of this uncoating process, which is regulated by CA-CA interactions and by the association of the capsid with host cell factors like cyclophilin A (CypA), can influence the efficiency of reverse transc...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01388-14
更新日期:2014-09-01 00:00:00
abstract::Infection of neonatal mice with lymphocytic choriomeningitis virus (LCMV) strain Armstrong (ARM) results in a lifelong persistent infection. Viral variants (cytotoxic T lymphocyte [CTL] negative, persistence positive [CTL- P+]) can be isolated from the lymphoid tissues of such mice. Adult mice inoculated with these CT...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.68.11.7367-7373.1994
更新日期:1994-11-01 00:00:00
abstract::The antiviral activity of the double-stranded complex poly(rI) . poly(rC) in cell culture was restored or even surpassed if the constituent homopolymers were administered separately. Poly(rI) primed the cells for the antiviral activity of poly(rC) and poly(rC) primed for poly(rI), but neither poly(rI) nor poly(rC) pri...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.9.5.721-731.1972
更新日期:1972-05-01 00:00:00
abstract::Cyclosporine (CsA) and its derivatives potently suppress hepatitis C virus (HCV) replication. Recently, CsA-resistant HCV replicons have been identified in vitro. We examined the dependence of the wild-type and CsA-resistant replicons on various cyclophilins for replication. A strong correlation between CsA resistance...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02614-07
更新日期:2008-06-01 00:00:00
abstract::It is shown that the plasmid prophage P1 can be displaced by a superinfecting P1 phage in Escherichia coli recA(P1) lysogens. Six widely separated phage markers were used to distinguish between residual recombination and total substitution. It is further shown that superinfection of recA lysogens can lead to loss of b...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.31.2.277-280.1979
更新日期:1979-08-01 00:00:00
abstract::While a diversity of immunogens that elicit qualitatively different cellular immune responses are being assessed in clinical human immunodeficiency virus vaccine trials, the consequences of those varied responses for viral control remain poorly understood. In the present study, we evaluated the induction of virus-spec...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00204-08
更新日期:2008-09-01 00:00:00
abstract:UNLABELLED:In order to investigate the novel function(s) of the herpes simplex virus 1 (HSV-1) immediate early protein ICP22, we screened for ICP22-binding proteins in HSV-1-infected cells. Our results were as follows. (i) Tandem affinity purification of ICP22 from infected cells, coupled with mass spectrometry-based p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01057-14
更新日期:2014-07-01 00:00:00
abstract::The spikes of alphaviruses are composed of three copies of an E2-E1 heterodimer. The E1 protein possesses membrane fusion activity, and the E2 protein, or its precursor form, p62 (sometimes called PE2), controls this function. Both proteins are, together with the viral capsid protein, translated from a common C-p62-E1...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.12.9654-9663.1997
更新日期:1997-12-01 00:00:00
abstract::Human papillomaviruses (HPV) link their life cycles to epithelial differentiation and induce productive replication of viral DNA in suprabasal cells. Viral-DNA amplification requires cells to remain active in the cell cycle upon differentiation. This is in contrast to normal cells, which lose proliferative capability ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00078-10
更新日期:2010-05-01 00:00:00
abstract::Despite successful antiretroviral therapy (ART), low-level viremia (LLV) may be intermittently detected in most HIV-infected patients. Longitudinal blood plasma and resting CD4(+) T cells were obtained from two patients on suppressive ART to investigate the source of LLV. Single-genome sequencing of HIV-1 env from LLV...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00284-11
更新日期:2011-05-01 00:00:00
abstract::Varicella-zoster virus (VZV), an alphaherpesvirus restricted to humans, infects differentiated cells in vivo, including T lymphocytes, keratinocytes, and neurons, and spreads rapidly in confluent cultured dermal fibroblasts (HFFs). In VZV-infected HFFs, atypical expression of cyclins D3 and B1 occurs along with the in...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00153-08
更新日期:2008-12-01 00:00:00
abstract::Retroviral integrases associate during the early viral life cycle with preintegration complexes that catalyze the integration of reverse-transcribed viral cDNA into the host chromosomes. Several cellular and viral proteins have been reported to be incorporated in the preintegration complex. This study demonstrates tha...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02681-09
更新日期:2010-08-01 00:00:00
abstract::Human rhinoviruses (HRVs) were discovered as common cold pathogens over 50 years ago. Recent advances in molecular viral diagnostics have led to an appreciation of their role in more-significant respiratory illnesses, including bronchiolitis in infancy, childhood pneumonia, and acute exacerbations of chronic respirato...
journal_title:Journal of virology
pub_type: 杂志文章,评审
doi:10.1128/JVI.02290-09
更新日期:2010-08-01 00:00:00
abstract::Borna disease virus infection of neonatal rats results in a characteristic behavioral syndrome and apoptosis of subsets of neurons in the hippocampus and cerebellum (neonatal Borna disease [NBD]). The cellular mechanisms leading to neurodevelopmental damage in NBD have not been fully elucidated. Insights into this mod...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00836-06
更新日期:2006-09-01 00:00:00
abstract::Epstein-Barr virus (EBV) is a herpesvirus commonly associated with several malignancies, particularly in immunocompromised hosts. As a strategy for stimulating immunity against EBV for the treatment of EBV-associated tumors, we have genetically engineered dendritic cells (DC) to express EBV antigens, such as latent me...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.12.10416-10425.1999
更新日期:1999-12-01 00:00:00
abstract::Several different forms of progeny viral DNA can be identified in polyoma virus (Py)-infected mouse L-cells. The majority comprise mature form I superhelical DNA and the circular, double-stranded "theta" replicating intermediates in which the progeny DNA strands never exceed the unit genome length of the template. The...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.46.3.768-777.1983
更新日期:1983-06-01 00:00:00
abstract::Dendritic cells (DC) are considered to be important contributors to human immunodeficiency virus type 1 (HIV-1) transmission and pathogenesis. As the first target cells in mucosal tissues, they can be become productively infected and can also capture virions and transfer them efficiently to CD4(+) T cells located with...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01420-08
更新日期:2009-03-01 00:00:00
abstract::Chemokine receptors CCR5 and CXCR4 are the primary fusion coreceptors utilized for CD4-mediated entry by macrophage (M)- and T-cell line (T)-tropic human immunodeficiency virus type 1 (HIV-1) strains, respectively. Here we demonstrate that HIV-1 Tat protein, a potent viral transactivator shown to be released as a solu...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.11.8952-8960.1998
更新日期:1998-11-01 00:00:00
abstract::The RNA genomes from the cardioviruses, hepatoviruses, and aphthoviruses encode two to five tandem pseudoknots within their 5' untranslated regions. These pseudoknots lie adjacent to a pyrimidine-rich sequence, which in cardio- and aphthoviruses takes the form of a homopolymeric poly(C) tract. Seven deletion mutations...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.11.8182-8186.1996
更新日期:1996-11-01 00:00:00
abstract::Apoptosis of neurons and astrocytes is induced by human immunodeficiency type 1 (HIV-1) infection in vitro and has been demonstrated in brain tissue from patients with AIDS. We analyzed a panel of diverse HIV-1 primary isolates for the ability to replicate and induce neuronal and astrocyte apoptosis in primary human b...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.2.897-906.1999
更新日期:1999-02-01 00:00:00
abstract::Six overlapping viral RNAs are synthesized in cells infected with the avian coronavirus infectious bronchitis virus (IBV). These RNAs contain a 3'-coterminal nested sequence set and were assumed to be viral mRNAs. The seven major IBV virion proteins are all produced by processing of three polypeptides of ca. 23, 51, a...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.50.1.22-29.1984
更新日期:1984-04-01 00:00:00
abstract::For paramyxoviruses, entry requires a receptor-binding protein (hemagglutinin-neuraminidase [HN], H, or G) and a fusion protein (F). Like other class I viral fusion proteins, F is expressed as a prefusion metastable protein that undergoes a refolding event to induce fusion. HN binding to its receptor triggers F refold...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01191-09
更新日期:2009-11-01 00:00:00
abstract::Normal replication of Moloney murine leukemia virus (MoMLV) requires the integration of a DNA copy of the viral RNA genome into a chromosome of the host. In this work, we characterize the DNA sequences at the ends of the linear proviral precursor that are required for integration in the presence of MoMLV integration p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.11.5645-5648.1990
更新日期:1990-11-01 00:00:00