Abstract:
:Kinetic curves for neutralization of adenovirus type 2 with anti-hexon serum revealed no lag periods even when the serum was highly diluted or when the temperature was lowered to 4 degrees C, thus indicating a single-hit mechanism. Multiplicity curves determined with anti-hexon serum displayed a linear correlation between the degree of neutralization and dilution of antiserum. Neutralization values experimentally obtained under steady-state conditions fully fitted a single-hit model based on Poisson calculations. Quantitation of the amount of 125I-labeled type-specific anti-hexon antibodies needed for full neutralization of adenovirus showed that 1.4 antibodies were attached per virion under such conditions. Virions already attached to HeLa cells at 4 degrees C were, to a large extent, neutralizable by anti-hexon serum, whereas anti-fiber and anti-penton base antisera were negative. It is suggested that adenovirus may be neutralized by two pathways: aggregation of the virions (extracellular neutralization) as performed by anti-fiber antibodies and blocking of virion entrance from the acidic endosomes into the cytoplasm (intracellular neutralization). The latter effect could be obtained by (i) covering of the penton bases, as performed by anti-penton base antibodies, thereby preventing interaction between the penton bases and the endosomal membrane, which results in trapping of virions within endosomes, and (ii) inhibition of the low-pH-induced conformational change of the viral capsid, which seems to occur in the endosomes and is necessary for proper exposure of the penton bases, as performed by anti-hexon antibodies.
journal_name
J Viroljournal_title
Journal of virologyauthors
Wohlfart Cdoi
10.1128/JVI.62.7.2321-2328.1988subject
Has Abstractpub_date
1988-07-01 00:00:00pages
2321-8issue
7eissn
0022-538Xissn
1098-5514journal_volume
62pub_type
杂志文章abstract::Using coimmunoprecipitation and glutathione S-transferase pulldown experiments, we found that polyomavirus large T antigen binds to p300 in vivo and in vitro. The N-terminal region of the viral protein, including the pRB binding motif, was dispensable for this interaction, which involved several regions within the C-t...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.2.1734-1739.1999
更新日期:1999-02-01 00:00:00
abstract::Members of the Paramyxovirinae subfamily rely on the concerted action of two envelope glycoprotein complexes, attachment protein H and the fusion (F) protein oligomer, to achieve membrane fusion for viral entry. Despite advances in X-ray information, the organization of the physiological attachment (H) oligomer in fun...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01222-10
更新日期:2010-12-01 00:00:00
abstract::Purified rabies virions, unlabeled or labeled with radioactive amino acids or d-glucosamine, were dissociated into their polypeptides by treatment with sodium dodecyl sulfate in a reducing environment and fractionated by electroiphoresis in sodium dodecyl sulfate-containing polyacrylamide gel. The molecular weights of...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.7.2.241-249.1971
更新日期:1971-02-01 00:00:00
abstract::The promoter P7535 of human papillomavirus type 8 and the promoter P7185 of bovine papillomavirus type 1 are negatively regulated by viral E2 proteins via the promoter proximal binding sites P2 and BS1, respectively. Mutations of these E2 binding sites can reduce basal promoter activity. This suggests binding of a tra...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.10.8029-8034.1997
更新日期:1997-10-01 00:00:00
abstract::The global diversity of human immunodeficiency virus type 1 (HIV-1) genotypes, termed subtypes A to J, is considerable and growing. However, relatively few studies have provided evidence for an associated phenotypic divergence. Recently, we demonstrated subtype-specific functional differences within the long terminal ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.10.8446-8452.1998
更新日期:1998-10-01 00:00:00
abstract::Replication by many positive-strand RNA viruses includes genomic RNA amplification and subgenomic mRNA (sgRNA) transcription. For brome mosaic virus (BMV), both processes occur in virus-induced, membrane-associated compartments, require BMV replication factors 1a and 2a, and use negative-strand RNA3 as a template for ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.3.1438-1451.2005
更新日期:2005-02-01 00:00:00
abstract::Using in situ hybridization, we demonstrated that latent herpes simplex virus type 1 (HSV-1) gene expression is prevalent in human adult nodose ganglia. This suggests that infection of gastrointestinal sensory nerves, probably through swallowed virus-laden oral secretions, occurs commonly and that HSV-1 reactivating f...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.5.4103-4106.1997
更新日期:1997-05-01 00:00:00
abstract::The CC-chemokines RANTES, macrophage inflammatory protein 1alpha (MIP-1alpha), and MIP-1beta are natural ligands for the CC-chemokine receptor CCR5. MIP-1alpha, also known as LD78alpha, has an isoform, LD78beta, which was identified as the product of a nonallelic gene. The two isoforms differ in only 3 amino acids. LD...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.9.4402-4406.2001
更新日期:2001-05-01 00:00:00
abstract::Autonomous parvoviruses are thought to uniquely encapsidate single-stranded DNA of minus polarity. In contrast, the defective adeno-associated viruses separately encapsidate equal amounts of plus and minus DNA strands. We reexamined the uniqueness of minus strand encapsidation for the autonomous parvoviruses. Although...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.49.2.319-324.1984
更新日期:1984-02-01 00:00:00
abstract::The viral genes UL128, UL130, and UL131A have been identified as major determinants of endothelial cell (EC) tropism of human cytomegalovirus (HCMV), with deletion of either gene causing a null phenotype. We hypothesized that a functional scanning of these genes by minor genetic modifications would allow for the gener...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01069-08
更新日期:2008-11-01 00:00:00
abstract::We have proposed a general algorithm for identification of potential immunoprotective domains (cassettes) on the envelope E2 polypeptide of alphaviruses (H. Grosfeld, B. Velan, M. Leitner, S. Cohen, S. Lustig, B.E. Lachmi, and A. Shafferman, J. Virol. 63:3416-3422, 1989). To assess the generality of our approach, we c...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.66.2.1084-1090.1992
更新日期:1992-02-01 00:00:00
abstract::PLC/PRF/5, a tissue culture cell line isolated from a human hepatocellular carcinoma and producing hepatitis B surface antigen, was studied for the presence of hepatitis B virus (HBV)-specific DNA and RNA. PLC/PRF/5 cell DNA accelerated the rate of reassociation of HBV [32P]DNA, and quantitative experiments indicated ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.33.2.795-806.1980
更新日期:1980-02-01 00:00:00
abstract::The amino-terminal region of the Vif molecule in human immunodeficiency virus type 1 (HIV-1), HIV-2, and simian immunodeficiency virus (SIV) contains a conserved SLV/Ix4Yx9Y motif that was first described in 1992, but the importance of this motif for Vif function has not yet been examined. Our characterization of the ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00653-09
更新日期:2009-09-01 00:00:00
abstract::Human papillomavirus type 1 (HPV1) E4 protein is associated with cytoplasmic and nuclear inclusions in productively infected keratinocytes. Here we have used transient expression of HPV1 E4 (also known as E1E4) protein in keratinocytes to reproduce formation of E4 inclusions. Immunofluorescence analysis showed that pr...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.1.673-684.2003
更新日期:2003-01-01 00:00:00
abstract::Although in vitro replication of the hepatitis C virus (HCV) JFH1 clone of genotype 2a (HCVcc) has been developed, a robust cell culture system for the 1a and 1b genotypes, which are the most prevalent viruses in the world and resistant to interferon therapy, has not yet been established. As a surrogate virus system, ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00608-07
更新日期:2007-08-01 00:00:00
abstract::Storage of the dimeric (alphabeta) form of avian myeloblastosis virus (AMV) DNA polymerase in glycerol resulted in the release of the smaller alpha subunit, as detected by glycerol gradient sedimentation. Analysis by sodium dodecyl sulfate-polyacrylamide gel electrophoresis of enzyme stored in glycerol showed the conc...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.18.3.904-910.1976
更新日期:1976-06-01 00:00:00
abstract::Termination of mRNA synthesis in vesicular stomatitis virus (VSV), the prototypic rhabdovirus, is controlled by a 13-nucleotide gene end sequence which comprises the conserved tetranucleotide 3'-AUAC-5', the U(7) tract and the intergenic dinucleotide. mRNAs terminated at this sequence possess 100- to 300-nucleotide-lo...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.15.6901-6913.2001
更新日期:2001-08-01 00:00:00
abstract:UNLABELLED:Enteroviruses (EVs) are a genetically and antigenically diverse group of viruses infecting humans. A mostly distinct set of EV variants have additionally been documented to infect wild apes and several, primarily captive, Old World monkey (OWM) species. To investigate the prevalence and genetic characteristi...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00088-14
更新日期:2014-06-01 00:00:00
abstract::Viruses encode proteins that disrupt chemokine responses. The murine gammaherpesvirus 68 gene M3 encodes a chemokine binding protein (vCKBP-3) which has no sequence similarity to chemokine receptors but inhibits chemokine receptor binding and activity. We have used a panel of CXCL8 analogs to identify the structural r...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.15.8588-8592.2003
更新日期:2003-08-01 00:00:00
abstract::Although shrews are one of the largest groups of mammals, little is known about their role in the evolution and transmission of viral pathogens, including coronaviruses (CoVs). We captured 266 Asian house shrews (Suncus murinus) in Jiangxi and Zhejiang Provinces, China, during 2013 to 2015. CoV RNA was detected in 24 ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00764-17
更新日期:2017-08-10 00:00:00
abstract::Kaposi's sarcoma-associated herpesvirus (KSHV) infection modulates the host cell cycle to create an environment optimal for its viral-DNA replication during the lytic life cycle. We report here that KSHV vIRF4 targets the β-catenin/CBP cofactor and blocks its occupancy on the cyclin D1 promoter, suppressing the G1-S c...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01897-15
更新日期:2015-10-21 00:00:00
abstract::Middle East respiratory syndrome coronavirus (MERS-CoV) causes severe acute respiratory infection with as yet unclear epidemiology. We previously showed that MERS-CoV counteracts parts of the innate immune response in human bronchiolar cells. Here we analyzed accessory proteins 3, 4a, 4b, and 5 for their abilities to ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01845-13
更新日期:2013-11-01 00:00:00
abstract::The Gag-Pol polyprotein of human immunodeficiency virus type 1 (HIV-1) is not required for efficient viral particle production. However, premature termination codons in pol, particularly in the integrase (IN)-coding region, can markedly impair HIV-1 particle formation, apparently due to the premature activation of the...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02329-10
更新日期:2011-04-01 00:00:00
abstract::Hepatitis delta virus (HDV) replicates its genome in the nucleus of an infected cell. However, an unsolved problem has been the identification in the cytoplasm of a putative mRNA for the synthesis of the only virus-coded protein, the delta antigen. We now report the characterization of an 800-base RNA that is cytoplas...
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
abstract::Wild-type human respiratory syncytial virus (HRSV) is a poor inducer of alpha/beta interferons (IFN-alpha/beta). However, recombinant HRSV lacking the NS1 and NS2 genes (Delta NS1/2) induced high levels of IFN-alpha and -beta in human pulmonary epithelial cells (A549) as well as in macrophages derived from primary hum...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.78.8.4363-4369.2004
更新日期:2004-04-01 00:00:00
abstract:UNLABELLED:Nonhuman primates (NHPs) are a historically important source of zoonotic viruses and are a gold-standard model for research on many human pathogens. However, with the exception of simian immunodeficiency virus (SIV) (family Retroviridae), the blood-borne viruses harbored by these animals in the wild remain i...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00573-16
更新日期:2016-07-11 00:00:00
abstract::Rhabdoviruses such as rabies virus (RV) encode only five multifunctional proteins accomplishing viral gene expression and virus formation. The viral phosphoprotein, P, is a structural component of the viral ribonucleoprotein (RNP) complex and an essential cofactor for the viral RNA-dependent RNA polymerase. We show he...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.22.12333-12343.2004
更新日期:2004-11-01 00:00:00
abstract::To clarify the role of core protein phosphorylation in pregenomic-RNA encapsidation of human and duck hepatitis B viruses (HBV and DHBV, respectively), we have examined the phosphorylation states of different forms of intracellular HBV core protein and the phenotypic effects of mutations in the phosphorylation sites o...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.10.4721-4728.2000
更新日期:2000-05-01 00:00:00
abstract::Most retroviral packaging cell lines were established by a helper virus plasmid cotransfected with a separate plasmid encoding a selection marker. Since this selection marker coexisted in trans with the helper virus sequence, helper virus gene expression could be inactivated by host DNA methylation despite selection f...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.11.5242-5249.2000
更新日期:2000-06-01 00:00:00
abstract::The ICP18.5 gene (UL28) of herpes simplex virus type 1 is a member of a well-conserved gene family among herpesviruses and is thought to play a role in localization of viral glycoproteins. We have cloned, sequenced, and expressed the entire pseudorabies virus (PRV) ICP18.5 open reading frame in Escherichia coli as a C...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.7.3746-3758.1991
更新日期:1991-07-01 00:00:00