Abstract:
:We report the use of a HeLa whole cell extract (WCE) runoff transcription system for the study of cis- and trans-acting elements, participating in the regulation of transcription initiation from the P38 promoter of the parvovirus minute virus of mice (MVM). Our initial studies with HeLa WCE indicated that transcription from the P38 promoter is very inefficient, compared with transcription from the P4 promoter. Supplementation of the HeLa WCE with WCE prepared from uninfected Ehrlich ascites cells enhanced transcription from the P38 promoter twofold, indicating a role for a cellular factor in transcription from the P38 promoter. Furthermore, supplementation with WCE prepared from MVM-infected Ehrlich ascites cells enhanced transcription from the P38 promoter about sixfold, indicating a role for a virally encoded or induced factor. Analyses of runoffs produced by transcription of DNA templates digested with various restriction enzymes defined a downstream promoter element (DPE) necessary for efficient transcription initiation from the P38 promoter. This element resides 282 to 647 base pairs 3' to the transcription initiation site, between the NarI site and the HindIII site (2287 to 2652, MVM numbering system). The virally encoded NS1 protein was shown by DNA precipitation to bind directly or indirectly through a cellular factor to the DPE. This interaction is suggested to be involved in the up regulation of the P38 promoter of MVM. Finally, with a DNase I protection assay performed on a fragment containing the DPE, we estimated the sequence involved in the binding of a factor present in uninfected and infected extracts. The correlation between the binding and transcription activation is discussed.
journal_name
J Viroljournal_title
Journal of virologyauthors
Krauskopf A,Resnekov O,Aloni Ydoi
10.1128/JVI.64.1.354-360.1990subject
Has Abstractpub_date
1990-01-01 00:00:00pages
354-60issue
1eissn
0022-538Xissn
1098-5514journal_volume
64pub_type
杂志文章abstract::Avian leukosis virus subgroup J (ALV-J), an exogenous avian retrovirus, is thought to have evolved by recombination with the highly identical env gene of the endogenous avian retrovirus EAV-HP. Embryonic expression of EAV-HP env has been suggested to be associated with the induction of immunological tolerance, a featu...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.23.11935-11938.2001
更新日期:2001-12-01 00:00:00
abstract::Assembly and maturation of retroviral particles requires the aggregation and controlled proteolytic cleavage of polyprotein core precursors by a precursor-encoded protease (PR). Active, mature retroviral PR is a dimer, and the accumulation of precursors at sites of assembly may facilitate subunit interaction and subse...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.11.6165-6172.1991
更新日期:1991-11-01 00:00:00
abstract::The genome of infectious hematopoietic necrosis virus (IHNV), a salmonid novirhabdovirus, has been engineered to modify the gene order and to evaluate the impact on a possible attenuation of the virus in vitro and in vivo By reverse genetics, eight recombinant IHNVs (rIHNVs), termed NxGy according to the respective po...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01024-16
更新日期:2016-11-14 00:00:00
abstract::The herpes simplex virus type 1 capsid is composed of seven capsid proteins which are termed VP5, VP19c, VP21, VP22a, VP23, VP24, and VP26. Major capsid protein VP5 is encoded by the gene UL19. UL18, whose transcript is 3' coterminal with that of VP5, specifies capsid protein VP23. Vero cell lines have been isolated t...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.3.1357-1364.1993
更新日期:1993-03-01 00:00:00
abstract::We have identified a cytomegalovirus virion protein capable of modulating the rapid induction of an interferon-like response in cells that follows virus binding and penetration. Functional genomics revealed a role for the major cytomegalovirus structural protein, pp65 (ppUL83), in counteracting this response. The unde...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.20.10995-11006.2004
更新日期:2004-10-01 00:00:00
abstract:UNLABELLED:The APOBEC3 family of DNA cytosine deaminases has important roles in innate immunity and cancer. It is unclear how DNA tumor viruses regulate these enzymes and how these interactions, in turn, impact the integrity of both the viral and cellular genomes. Polyomavirus (PyVs) are small DNA pathogens that contai...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00771-16
更新日期:2016-06-24 00:00:00
abstract::The treatment of bacteriophage T4D with 2-hydroxy-5-nitrobenzyl bromide, a specific reagent for alkylating the indole ring of tryptophan residues, converts these particles from a cofactor-independent form to a cofactor-sensitive form. These treated T4D particles phenotypically resemble T4B particles in certain respect...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.2.5.480-487.1968
更新日期:1968-05-01 00:00:00
abstract::Profound alterations in host cell nuclear architecture accompany the lytic phase of Epstein-Barr virus (EBV) infection. Viral replication compartments assemble, host chromatin marginalizes to the nuclear periphery, cytoplasmic poly(A)-binding protein translocates to the nucleus, and polyadenylated mRNAs are sequestere...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01254-18
更新日期:2018-09-26 00:00:00
abstract::We investigated the primary cellular immune responses to human immunodeficiency virus type 1 (HIV-1) Env and Gag proteins elicited by recombinant vesicular stomatitis viruses (rVSVs). The primary response to Env peaked 5 to 7 days after intraperitoneal vaccination, at which time 40% of CD8(+) cells were Env tetramer p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.6.2730-2738.2002
更新日期:2002-03-01 00:00:00
abstract::Oligomer formation of the gB glycoprotein of herpes simplex virus type 1 was studied by sedimentation analysis of radioactively labeled infected cell and virion lysates. Fractions from sucrose gradients were precipitated with a pool of gB-specific monoclonal antibodies and analyzed by sodium dodecyl sulfate-polyacryla...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.8.4275-4283.1991
更新日期:1991-08-01 00:00:00
abstract::A protein-protein interaction within the helicase domain of the Tobacco mosaic virus (TMV) 126- and 183-kDa replicase proteins was previously implicated in virus replication (S. Goregaoker, D. Lewandowski, and J. Culver, Virology 282:320-328, 2001). To further characterize the interaction, polypeptides covering the in...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.6.3549-3556.2003
更新日期:2003-03-01 00:00:00
abstract:UNLABELLED:The safety and efficacy of the live-attenuated Japanese encephalitis virus (JEV) SA14-14-2 vaccine are attributed to mutations that accumulated in the viral genome during its derivation. However, little is known about the contribution that is made by most of these mutations to virulence attenuation and vacci...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00219-15
更新日期:2015-06-01 00:00:00
abstract::The hepatitis C virus (HCV)-specific CD4+ T-cell response against nonstructural proteins is strongly associated with successful viral clearance during acute hepatitis C. To further develop these observations into peptide-based vaccines and clinical immunomonitoring tools like HLA class II tetramers, a detailed charact...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.19.12425-12433.2005
更新日期:2005-10-01 00:00:00
abstract::The persistence of measles virus in selected areas of the brains of four patients with subacute sclerosing panencephalitis (SSPE) was characterized by immunohistological and biochemical techniques. The five measles virus structural proteins were never simultaneously detectable in any of the brain sections. Nucleocapsi...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.59.2.472-478.1986
更新日期:1986-08-01 00:00:00
abstract::Potyviruses express most of their proteins from a long open reading frame that is translated into a large polyprotein processed by three viral proteases. To understand the constraints on potyvirus genome organization, we relocated the viral RNA-dependent RNA polymerase (NIb) cistron to all possible intercistronic posi...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03336-13
更新日期:2014-04-01 00:00:00
abstract::Coronavirus nonstructural protein 8 (nsp8) has been suggested to have diverse activities, including noncanonical template-dependent polymerase activities. Here, we characterized a recombinant form of the human coronavirus 229E (HCoV-229E) nsp8 and found that the protein has metal ion-dependent RNA 3'-terminal adenylyl...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00291-19
更新日期:2019-05-29 00:00:00
abstract::The potential role of T cells in the control of human papillomavirus type 6 (HPV-6) infections is an appealing premise, but their actual role has been sparsely investigated. Since HPV-6 infections are confined to the epithelium, such an investigation should focus on the T cells present at the site of infection (i.e., ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.9.6427-6432.1997
更新日期:1997-09-01 00:00:00
abstract::The biological and genetic characteristics of murine leukemia viruses (MuLV) derived from leukemic and normal HRS/J mice were studied. T1-oligonucleotide fingerprinting and mapping of viral RNAs from unpassaged isolates revealed the presence of complex mixtures of viral genomes. MuLV that were purified by endpoint dil...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.50.2.397-407.1984
更新日期:1984-05-01 00:00:00
abstract::Expression of the papillomavirus E4 protein correlates with the onset of viral DNA amplification. Using a mutant cottontail rabbit papillomavirus (CRPV) genome incapable of expressing the viral E4 protein, we have shown that E4 is required for the productive stage of the CRPV life cycle in New Zealand White and cotton...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.78.4.2142-2151.2004
更新日期:2004-02-01 00:00:00
abstract::Epstein-Barr virus (EBV) nuclear antigen 3C (EBNA-3C) is one of five viral nuclear proteins that are essential for EBV-induced immortalization of primary human B lymphocytes in vitro. Previous studies have implied that EBNA-3C acts as a transcription factor. Using transient transfection assays, we demonstrate that EBN...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.6.3624-3630.1995
更新日期:1995-06-01 00:00:00
abstract::Human metapneumovirus (hMPV) is a respiratory paramyxovirus of global clinical relevance. Despite the substantial knowledge generated during the last 10 years about hMPV infection, information regarding the activation of the immune response against this virus remains largely unknown. In this study, we demonstrated tha...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01213-12
更新日期:2013-01-01 00:00:00
abstract::Approximately 20 to 22 copies of adenovirus type 12 (Ad12) DNA per cell were integrated into the genome of the cell line T637. Only a few of these copies seemed to remain intact and colinear with virion DNA. All other persisting viral genomes exhibited deletions or inversions or both in the right-hand part of Ad12 DNA...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.42.1.317-321.1982
更新日期:1982-04-01 00:00:00
abstract::The rate-limiting steps in infection by human immunodeficiency virus type 1 (HIV-1) deficient in the viral infectivity factor, Vif, are unknown. As a measurement of completion of the early stages of the HIV-1 life cycle, the levels of viral DNA were examined by polymerase chain reaction amplification during infection ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.10.6322-6326.1993
更新日期:1993-10-01 00:00:00
abstract::The Epstein-Barr virus (EBV) is an oncogenic human herpesvirus. EBV latent membrane protein 1 (LMP-1) is a viral oncogene that manifests its oncogenic phenotype through activation of cellular signaling pathways involved in cell growth, survival, differentiation, and transformation. Lytic LMP-1 (lyLMP-1) is a related E...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00180-06
更新日期:2006-08-01 00:00:00
abstract::The utility of the present generation of adenovirus (Ad) vectors for gene therapy applications could be improved by restricting native viral tropism to selected cell types. In order to achieve modification of Ad tropism, we proposed to exploit a minor component of viral capsid, protein IX (pIX), for genetic incorporat...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.14.6893-6899.2002
更新日期:2002-07-01 00:00:00
abstract::Transformation-defective (td) mutants with different sizes of genomic RNA were isolated from the Prague strain of Rous sarcoma virus, subgroup C(PR-C). All six td viruses (tdTYPR-C) isolated from a single UV-irradiated stock of PR-C (clone 2 of TYPR-C) had slightly longer RNA than did the ordinary class b RNA of tdB77...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.30.2.453-461.1979
更新日期:1979-05-01 00:00:00
abstract::Vaccines preventing HIV-1 infection will likely elicit antibodies that neutralize diverse strains. However, the capacity for lentiviruses to escape broadly neutralizing antibodies (NAbs) is not completely understood, nor is it known whether NAbs alone can control heterologous infection. Here, we determined that conval...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00218-10
更新日期:2010-07-01 00:00:00
abstract::Rhesus cytomegalovirus (RhCMV) infection of macaques exhibits strong similarities to human CMV (HCMV) persistence and pathogenesis. The immunogenicity of DNA vaccines encoding three RhCMV proteins (a truncated version of glycoprotein B lacking the transmembrane region and endodomain [gBDeltaTM], phosphoprotein 65-2 [p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01708-06
更新日期:2007-02-01 00:00:00
abstract::Human adenoviruses typically cause mild infections in the upper or lower respiratory tract, gastrointestinal tract, or ocular epithelium. However, adenoviruses may be life-threatening in patients with impaired immunity and some serotypes cause epidemic outbreaks. Attachment to host cell receptors activates cell signal...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02014-12
更新日期:2013-02-01 00:00:00
abstract::Cytomegaloviruses (CMVs) colonize blood-borne myeloid cells. Murine CMV (MCMV) spreads from the lungs via infected CD11c+ cells, consistent with an important role for dendritic cells (DC). We show here that MCMV entering via the olfactory epithelium, a natural transmission portal, also spreads via infected DC. They re...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00540-19
更新日期:2019-07-17 00:00:00