Abstract:
:In order to determine the location and biological significance of the acid-induced conformational change in influenza virus hemagglutinin (HA) reported by Skehel et al., monoclonal antibodies were prepared to the molecule before and after treatment at pH 5.0. These antibodies together with monoclonal antibodies to the different antigenic regions of the H3 HA were used in immunoprecipitation and ELISA binding studies to show that antigenic changes accompanied the conformational change in the HA. Treatment at pH 5.2 or less exposed new determinants on the HA while two antigenic regions, located at the tip and interface of the molecule at neutral pH, were lost or modified. Antigenic sites in the loop and hinge regions defined by the available monoclonal antibodies were not affected by the conformational change. Monoclonal antibodies specific for the acid-induced conformation efficiently inhibited hemagglutination of the virus at low pH but were extremely poor inhibitors of virus-induced red blood cell hemolysis at its pH optimum of 5.1. These antibodies were unable to neutralize viral infectivity under neutral or acidic conditions. Antibodies specific for the non-acid-treated HA conformation failed to inhibit hemagglutination at low pH values but were able to both inhibit hemolysis of red blood cells and neutralize virus infectivity. Residual unmodified HA after pH 5.0 treatment could explain the inhibition of hemolysis and infectivity by monoclonal antibodies in each of the different antigenic areas.
journal_name
Virologyjournal_title
Virologyauthors
Webster RG,Brown LE,Jackson DCdoi
10.1016/s0042-6822(83)80015-4subject
Has Abstractpub_date
1983-04-30 00:00:00pages
587-99issue
2eissn
0042-6822issn
1096-0341journal_volume
126pub_type
杂志文章相关文献
VIROLOGY文献大全abstract::Various lectins were tested for blocking rotavirus infection of MA104 cells and it was observed that galactose-specific lectins were the most inhibitory. Of these Ricinus agglutinin was able to inhibit infection (by human and animal strains) at concentrations as low as 10(-9) M. In addition, in a virus overlay protein...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.2000.0470
更新日期:2000-09-15 00:00:00
abstract::Adeno-associated virus (AAV-2) replicates to high titers when host cells are coinfected with a helper virus. Here we analyzed the coinfection of AAV-2 and mouse adenovirus (MAV-1) in murine fibroblasts. We observed that AAV-2/MAV-1 coinfected NIH 3T3 cells produced approximately 10-40-fold less AAV-2 DNAse resistant p...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2009.04.020
更新日期:2009-07-20 00:00:00
abstract::The quasispecies structure of nervous necrosis virus (NNV) was determined to investigate an outbreak of viral nervous necrosis disease at a barramundi (Lates calcarifer) hatchery. A traditional epidemiological investigation indicated horizontal transmission of infection between two cohorts of fish. However, variation ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2012.10.011
更新日期:2013-02-05 00:00:00
abstract::The binding of monoclonal antibodies to antigenic site 3 on the hemagglutinin-neuraminidase (HN) glycoprotein of Newcastle disease virus neutralizes viral infectivity and prevents syncytium formation by a mechanism other than the prevention of viral attachment. The virus can escape neutralization by these antibodies b...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1994.1506
更新日期:1994-10-01 00:00:00
abstract::We have used mRNA differential display to search for cellular genes whose expression is modulated in SV40-transformed cells. We identified a gene, the alpha1 subunit of type XI procollagen (alpha1(XI)), whose mRNA level is reduced in most F111 rat cell lines that express either wild-type SV40 T antigen or an amino-ter...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1996.0212
更新日期:1996-04-15 00:00:00
abstract::To investigate differential evolutionary rates and selective forces of WNV in hosts and vectors, we measured the genetic diversity that arose during alternating passage in mosquitoes and birds. Within-host genetic diversity was monitored in each of three experimentally passed replicates, and the complete genome sequen...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2008.02.032
更新日期:2008-05-10 00:00:00
abstract::Human papillomavirus type 16 (HPV-16) E2 protein negatively regulates transcription of the E6 and E7 genes. This study was done to test the hypothesis that methylation of the HPV 16 long control region (LCR) is overrepresented among cervical cancer (CaCx) cases compared to cytologically normal controls harboring intac...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2006.06.018
更新日期:2006-10-25 00:00:00
abstract::Next generation sequence analyses were used to assess virus-derived small RNA (vsRNA) profiles for Homalodisca coagulata virus-1 (HoCV-1), family Dicistroviridae, and Homalodisca vitripennis reovirus (HoVRV), family Reoviridae, from virus-infected H. vitripennis, the glassy-winged sharpshooter. The vsRNA reads were ma...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2013.04.005
更新日期:2013-07-20 00:00:00
abstract::Herpes simplex virus type 1 (HSV-1) establishes lifelong latent infection in sensory neurons of the peripheral nervous system. During HSV latency, the latency-associated transcripts (LATs) are the only viral transcripts abundantly expressed. The most abundant form of LATs is a 2-kb stable intron spliced from a primary...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2004.03.043
更新日期:2004-07-01 00:00:00
abstract::Binding of simian virus 40 (SV40) large T antigen to human and calf thymus topoisomerase I (topo I) was readily detected by using modified enzyme-linked immunosorbent assays and immunoblots. In addition to WT T antigen, binding could also be readily demonstrated with T antigen fragments from the amino-terminal region ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1996.0433
更新日期:1996-08-15 00:00:00
abstract::Phage ΦM12 is an important transducing phage of the nitrogen-fixing rhizobial bacterium Sinorhizobium meliloti. Here we report the genome, phylogenetic analysis, and proteome of ΦM12, the first report of the genome and proteome of a rhizobium-infecting T4-superfamily phage. The structural genes of ΦM12 are most simila...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2013.11.027
更新日期:2014-02-01 00:00:00
abstract::Proinflammatory cytokines and chemokines are often detected in brain tissue of patients with neurological diseases such as multiple sclerosis (MS), HIV-associated dementia (HAD) and Alzheimer's disease (AD). We have utilized a mouse model of retrovirus-induced neurological disease to examine how these proinflammatory ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2006.06.016
更新日期:2006-10-10 00:00:00
abstract::Using the 5' long terminal repeat (LTR) as its only promoter, the HTLV-1 provirus generates a single RNA transcript that undergoes differential splicing to express the various viral proteins. Examination of sequence near the transcription start site revealed an element resembling a transcriptional initiator (Inr) at p...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.2000.0751
更新日期:2001-02-01 00:00:00
abstract::Functions of the coat protein of white clover mosaic potexvirus (WCIMV) were investigated using C-terminal deletion mutants. Whereas plants inoculated with RNA transcripts of a full-length wild-type clone of WCIMV produced typical infections, plants inoculated with transcripts of each mutant did not produce symptoms, ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(92)90215-b
更新日期:1992-11-01 00:00:00
abstract::Twelve avian reovirus strain 176 proteins, 10 structural (lambda 1, lambda 2, lambda 3, mu 1, mu 2/mu 2C, sigma 1, sigma 2, sigma 3, and sigma 4), and 2 nonstructural (mu NS and sigma NS) were identified and characterized by electrophoretic analysis of purified virions and infected cell lysates. Three of the identifie...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1993.1147
更新日期:1993-03-01 00:00:00
abstract::In mid-January 2016, an outbreak of H7N8 high-pathogenicity avian influenza virus (HPAIV) in commercial turkeys occurred in Indiana. Surveillance within the 10km control zone identified H7N8 low-pathogenicity avian influenza virus (LPAIV) in nine surrounding turkey flocks but no other HPAIV-affected premises. We seque...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2017.04.025
更新日期:2017-07-01 00:00:00
abstract::Jembrana disease virus (JDV) is an unusual bovine lentivirus which causes a non-follicular proliferation of lymphocytes, a transient immunosuppression and a delayed humoral response in infected Bali cattle in Indonesia. A double-immunofluorescent labeling method was developed to identify the subset of mononuclear cell...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2009.07.027
更新日期:2009-10-25 00:00:00
abstract::The gene encoding the VP8* trypsin-cleavage product of the VP4 protein of porcine rotavirus strain A34 was sequenced, and the predicted amino acid (aa) sequence was compared to the homologous region of all known P genotypes. The aa sequence of the VP8* of strain A34 shared low identity, ranging from 39% (bovine strain...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/s0042-6822(03)00534-8
更新日期:2003-10-25 00:00:00
abstract::HIV-1 envelope glycoproteins (Env) and Env-based immunogens usually do not interact efficiently with the inferred germline precursors of known broadly neutralizing antibodies (bNAbs). This deficiency may be one reason why Env and Env-based immunogens are not efficient at inducing bNAbs. We evaluated the binding of 15 ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2015.08.002
更新日期:2015-12-01 00:00:00
abstract::The natural host of SIVrcm is the red-capped mangabey (Cercocebus torquatus torquatus). Although this virus infects macaques and human PBMCs, its pathogenic potential is unknown. We serially passaged SIVrcm through 9 rhesus macaques to assess its potential for virulence. SIVrcm infected all macaques with peak viremia ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2008.06.012
更新日期:2008-09-15 00:00:00
abstract::In this article we report the initial biochemical, genetic, and electron microscopic analysis of a previously uncharacterized, 8.9-kDa, predicted thiol-redox protein. The name A2.5L was assigned to the corresponding vaccinia virus gene, which is conserved in all sequenced poxviruses. Multiple alignment analysis and se...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.2002.1608
更新日期:2002-09-01 00:00:00
abstract::Wild-type vaccinia virus WR strain forms non-fusogenic (F-) large plaques and is hemagglutinin positive (HA+) under normal conditions of virus infection. We have analyzed a collection of spontaneous, highly attenuated mutants of vaccinia virus isolated from persistently infected Friend erythroleukemia cells (E. Paez, ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1994.1018
更新日期:1994-01-01 00:00:00
abstract::The replication of vaccinia virus was reduced by 3 logs in cells that had been treated before and during infection with a concentration of N-(phosphonoacetyl)-L-aspartate (PALA) which lowered the UTP and CTP to 5 and 20% of controls, respectively, without affecting cell viability. The antiviral activity of PALA was re...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1997.8735
更新日期:1997-09-15 00:00:00
abstract::To elucidate the virulence factors of equine herpesvirus-1 (EHV-1), we compared the genomic architecture of the HH1 strain, a Japanese isolate of EHV-1, with that of its four descendant strains obtained by serial passage in bovine kidney (BK) cells, i.e. BK77, BK161, BK271, and BK343. In preliminary studies high-passa...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1994.1228
更新日期:1994-05-01 00:00:00
abstract::nsP3 is one of four viral nonstructural proteins required for RNA replication of Sindbis virus. In this report, post-translational modifications of nsP3 which occur in both vertebrate and mosquito cell cultures have been examined. In pulse-chase experiments, analyzed by immunoprecipitation and sodium dodecyl sulfate-p...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(90)90310-n
更新日期:1990-11-01 00:00:00
abstract::We established the transcription map of early region (E) 3 of bovine adenovirus 3 (BAV-3) by Northern blot, S1 nuclease protection assays, cDNA sequencing, and RT-PCR analysis. Five major classes of mRNAs were identified, which shared the 3' ends. Four classes of mRNAs transcribed from the E3 promoter also shared the ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1999.9626
更新日期:1999-04-10 00:00:00
abstract::Cucumber Mosaic Virus (CMV) is a plant infecting tripartite positive-strand RNA virus. In addition to three genomic and two known subgenomic RNAs, CMV strains of subgroup II (e.g. Q-CMV), but not subgroup I (e.g. Fny-CMV), produce and package a redundant RNA5 encompassing the 3' 304-307 nucleotides of RNAs 2 and 3. Th...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2008.10.023
更新日期:2009-02-05 00:00:00
abstract::Coronaviruses have a marked tropism for epithelial cells. Entry and release of the porcine transmissible gastroenteritis virus (TGEV) is restricted to apical surfaces of polarized epithelial cells, as we have recently shown (J. W. A. Rossen, C. P. J. Bekker, W. F. Voorhout, G. J. A. M. Strous, A. van der Ende, and P. ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1995.1316
更新日期:1995-06-20 00:00:00
abstract::Mouse LTK- cells (H-2k) were transfected with a series of recombinant plasmids consisting of the herpes simplex virus type 1 thymidine kinase (TK) gene linked to fragments of SV40 DNA coding for portions of SV40 T antigen in pBR322, and TK+ transformants (LTK+) were selected in HAT medium. The TK+ transformants were a...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(83)90259-3
更新日期:1983-07-30 00:00:00
abstract::The existence and genetic make-up of most primate retroviruses was revealed by studies of bushmeat and fecal samples from unhabituated primate communities. For these, detailed data on intra- and within-species contact rates are generally missing, which makes identification of factors influencing transmission a challen...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2014.05.012
更新日期:2014-07-01 00:00:00