Abstract:
:The role of the T4 bacteriophage regA gene in stabilizing early mRNA was investigated by assaying the level of functional mRNA from eight prereplicative genes (56 [dCMP hydroxymethylase], cd [dCMP deaminase], 1 [deoxynucleotide kinase], rIIA, rIIB, 46 [DNA arrest], and 45) during extended infection of Escherichia coli B with T4 regA-, 43- and T4 43- bacteriophage. The above gene-specific transcripts in RNA isolated from infected cells were quantitated by translation with an E. coli B cell-free system. Conditions were chosen to insure that the amount of gene product formed in vitro, measured either as an enzyme activity or as a radioactive band in acrylamide gel, was directly proportional to the level of mRNA present. The failure of T4 regA-, 43- phage to terminate prereplicative synthesis (Wiberg et al., 1973) resulted in an enhanced production of many early gene products over those formed during T4 43- infection. This increase did not appear to be associated with an increment in mRNA levels, since in the present study gene-specific early mRNA's were found to be only marginally elevated and slightly more stable in T4 regA-, 43-- than in T4 43--infected cells. Of interest was the observation that significant quantities of all of the mRNA's studied; with the exception of those from genes 45 and 46, could be isolated from T4 43--infected cells after synthesis of the respective gene products had ceased. On termination of normal prereplicative synthesis during infection with T4 43- phage, polyribosomes were found to be dissociated completely, a finding which suggests that the residual mRNA present in these cells is free in the cytoplasm. The persistence in T4 43--infected cells of translatable mRNA for many prereplicative genes after product synthesis ceased indicates that the impairment in protein synthesis is not due solely to regA-mediated messenger degradation or modification. Rather, the results suggest that the regA gene product may act either by interfering with early mRNA polypeptide chain initiation or by promoting prereplicative polysome dissociation.
journal_name
J Viroljournal_title
Journal of virologyauthors
Trimble RB,Maleydoi
10.1128/JVI.17.2.538-549.1976subject
Has Abstractpub_date
1976-02-01 00:00:00pages
538-49issue
2eissn
0022-538Xissn
1098-5514journal_volume
17pub_type
杂志文章abstract::The first 86 residues of the Rous sarcoma virus (RSV) Gag protein form a membrane-binding (M) domain that directs Gag to the plasma membrane during budding. Unlike other retroviral Gag proteins, RSV Gag is not myristylated; however, the RSV M domain does contain 11 basic residues that could potentially interact with a...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.23.11222-11229.2000
更新日期:2000-12-01 00:00:00
abstract::MxA is an abundant and ubiquitous cytoplasmic protein induced by alpha/beta interferon in human cells. Upon full induction, it can constitute 0.5 to 1% of cytosolic proteins. MxA can bind elements of the cytoskeleton, such as actin and tubulins, and several larger cellular proteins. However, these protein-protein inte...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.66.8.4705-4709.1992
更新日期:1992-08-01 00:00:00
abstract::The retroviral primary transcription product is a multifunctional RNA that is utilized as pre-mRNA, mRNA, and genomic RNA. The relationship between human immunodeficiency virus type 1 (HIV-1) unspliced transcripts used as mRNA for viral protein synthesis and as virion precursor RNA (vpRNA) for encapsidation remains an...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.24.11531-11537.2000
更新日期:2000-12-01 00:00:00
abstract::The Epstein-Barr virus oriP, when examined with the use of in vitro nucleosome reconstitution, was found to exhibit a partial sparing of nucleosome assembly within the 3' dyad. Analysis of the homologous region containing the origin of replication of herpesvirus papio disclosed that sparing of nucleosome assembly was ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.63.12.5505-5508.1989
更新日期:1989-12-01 00:00:00
abstract::Mouse mammary tumor viruses (MMTVs) contain distinct membrane glycoproteins of 52,000 daltons (gp52) and 36,000 daltons (gp36). We report here the development of new radioimmunoassays for gp36, using gp36 purified by hydrophobic chromatography and gel filtration. These assays demonstrate that gp36 has both type-speci...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.31.2.334-340.1979
更新日期:1979-08-01 00:00:00
abstract::Latency is an integral feature of the pathogenesis of cytomegalovirus infection and disease. Using in situ hybridization, we detected viral DNA in the splenic stroma of mice with acute murine cytomegalovirus (MCMV) infection but could not detect latent infection. By using enzymatic amplification of a 700-bp region of ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.6.3330-3334.1991
更新日期:1991-06-01 00:00:00
abstract::Epstein-Barr virus (EBV) infection is mediated by several viral envelope glycoproteins. We have assessed gp110's functions during the virus life cycle using a mutant that lacks BALF4 (DeltaBALF4). Exposure of various cell lines and primary cell samples of epithelial or lymphoid lineages to the DeltaBALF4 mutant failed...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01613-08
更新日期:2009-05-01 00:00:00
abstract::A major challenge for the development of an effective HIV vaccine is to elicit neutralizing antibodies against a broad array of primary isolates. Monomeric gp120-based vaccine approaches have not been successful in inducing this type of response, prompting a number of approaches designed to recreate the native glycopr...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.23.14804-14814.2005
更新日期:2005-12-01 00:00:00
abstract::The functions of delta antigens (HDAgs) in the morphogenesis of hepatitis delta virus (HDV) have been studied previously. The C terminus of large HDAg has been shown to complex with the small surface antigen (HBsAg) of helper hepatitis B virus, whereas the assembly of small HDAg requires interaction with the N terminu...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.4.2508-2514.1995
更新日期:1995-04-01 00:00:00
abstract::The mouse hind footpad inoculation model has served as a standard laboratory system for the study of the neuropathogenesis of herpes simplex virus type 1 (HSV-1) infection. The temporal and spatial distribution of viral antigen, known as the transneuronal spread phenotype, has not previously been described; nor is it ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.3.2425-2435.1997
更新日期:1997-03-01 00:00:00
abstract::A receptor on YAC-1 cells, a mouse T-lymphoma cell line, bound all six serotypes of the group B coxsackieviruses (CVB). In addition, the cells produced infectious virus. Each of the CVB competed for the same receptor on YAC-1 cells. CVB3 bound relatively slowly to YAC-1 cells (k = 4 x 10(-11) min-1 cell-1), and there ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.63.7.3105-3108.1989
更新日期:1989-07-01 00:00:00
abstract::Murine coronavirus mouse hepatitis virus (MHV) causes persistent infection of the central nervous system (CNS) in rodents, which has been associated with demyelination. However, the precise mechanism of MHV persistence in the CNS remains elusive. Here we show that the progenitor oligodendrocytes (central glial 4 [CG-4...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.1.47-56.2005
更新日期:2005-01-01 00:00:00
abstract::The genome of the simian virus 40 (SV40) temperature-sensitive (ts) mutant tsD202 rescued by passage on transformed permissive monkey lines (see accompanying paper [Y. Gluzman et al., J. Virol. 24:534-540, 1977]) was analyzed by restriction endonuclease cleavage mapping to obtain biochemical evidence that the rescue o...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.24.2.541-550.1977
更新日期:1977-11-01 00:00:00
abstract::The lack of a mouse model has hampered an understanding of the pathogenesis and immunity of Marburg hemorrhagic fever (MHF), the disease caused by marburgvirus (MARV), and has created a bottleneck in the development of antiviral therapeutics. Primary isolates of the filoviruses, i.e., ebolavirus (EBOV) and MARV, are n...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00126-09
更新日期:2009-07-01 00:00:00
abstract:UNLABELLED:The first discovered and sequenced hepatitis C virus (HCV) genome and the first in vivo infectious HCV clones originated from the HCV prototype strains HCV-1 and H77, respectively, both widely used in research of this important human pathogen. In the present study, we developed efficient infectious cell cult...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02877-14
更新日期:2015-01-01 00:00:00
abstract::Infection by viruses depends on a balance between capsid stability and dynamics. This study investigated biologically and biotechnologically relevant aspects of the relationship in foot-and-mouth disease virus (FMDV) between capsid structure and thermostability and between thermostability and infectivity. In the FMDV ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02293-18
更新日期:2019-05-01 00:00:00
abstract::Of the four required herpes simplex virus (HSV) entry glycoproteins, the precise role of gH-gL in fusion remains the most elusive. The heterodimer gH-gL has been proposed to mediate hemifusion after the interaction of another required glycoprotein, gD, with a receptor. To identify functional domains of HSV-1 gH, we ge...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02215-09
更新日期:2010-02-01 00:00:00
abstract::Since human immunodeficiency virus (HIV)-specific cell-mediated immune (CMI) responses are critical in the early control and resolution of HIV infection and correlate with postchallenge outcomes in rhesus macaque challenge experiments, we sought to identify a plasmid DNA (pDNA) vaccine design capable of eliciting robu...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00055-07
更新日期:2007-05-01 00:00:00
abstract::Airborne viruses are expected to be ubiquitous in the atmosphere but they still remain poorly understood. This study investigated the temporal and spatial dynamics of airborne viruses and their genotypic characteristics in air samples collected from three distinct land use types (a residential district [RD], a forest ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00293-12
更新日期:2012-08-01 00:00:00
abstract::We used the Escherichia coli chloramphenicol acetyltransferase gene (cat) to study sequences that influence expression of the equine infectious anemia virus (EIAV) genome. The EIAV long terminal repeat (LTR) directed CAT activity in a canine cell line, but at levels much lower than those achieved with other eucaryotic...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.62.1.120-126.1988
更新日期:1988-01-01 00:00:00
abstract::Bovine bone marrow-derived macrophages infected with the cytopathic biotype of bovine viral diarrhea virus released an antiviral activity into the supernatant which was tentatively characterized as type I interferon because of its physicochemical properties. Such supernatants primed both infected and uninfected macrop...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.4.3255-3258.1997
更新日期:1997-04-01 00:00:00
abstract::F proteins from baculovirus nucleopolyhedrovirus (NPV) group II members are the major budded virus (BV) viral envelope fusion proteins. They undergo furin-like proteolysis processing in order to be functional. F proteins from different baculovirus species have a long cytoplasmic tail domain (CTD), ranging from 48 (Spo...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01178-06
更新日期:2006-11-01 00:00:00
abstract::The Moloney murine leukemia virus (MuLV) is a highly leukemogenic virus. To map the leukemogenic potential of Moloney MuLV, we constructed chimeric viral DNA genomes in vitro between parental cloned infectious viral DNA from Moloney and amphotropic 4070-A MuLVs. Infectious chimeric MuLVs were recovered by microinjecti...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.52.2.448-456.1984
更新日期:1984-11-01 00:00:00
abstract::A characterization of the antigenic determinants (epitopes) of the glycoprotein (G) of infectious hematopoietic necrosis virus was made by expressing different regions of the G gene in Escherichia coli. A cDNA copy of the G gene was divided into four fragments by TaqI digestion, and the fragments were subcloned into p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.3.1611-1615.1991
更新日期:1991-03-01 00:00:00
abstract::Human immunodeficiency virus type 1 (HIV-1) vpr inhibits the replication of tumor cell lines and peripheral blood mononuclear cells. Here it is demonstrated that expression of vpr, either in the context of a provirus or from an independent genetic element, induces a discrete cell cycle arrest, with cells containing 4N...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.11.6859-6864.1995
更新日期:1995-11-01 00:00:00
abstract::The immediate-early gene ie2 of murine cytomegalovirus was characterized. The 1.75-kb ie2 transcript is spliced from three exons, of 78, 124, and 1,283 nucleotides, which are separated by introns of 1,245 and 364 nucleotides. An ATG codon located in the third exon leads into an open reading frame of 391 codons. Immedi...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.3.1638-1643.1991
更新日期:1991-03-01 00:00:00
abstract::The L5R gene of vaccinia virus is conserved among all sequenced members of the Poxviridae but has no predicted function or recognized nonpoxvirus homolog. Here we provide the initial characterization of the L5 protein. L5 is expressed following DNA replication with kinetics typical of a viral late protein, contains a ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.17.10988-10998.2005
更新日期:2005-09-01 00:00:00
abstract::Herpes simplex virus 1 (HSV-1) is a common human pathogen that causes lifelong latent infection of sensory neurons. Non-nucleoside inhibitors that can limit HSV-1 recurrence are particularly useful in treating immunocompromised individuals or cases of emerging acyclovir-resistant strains of herpesvirus. We report that...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01492-10
更新日期:2011-05-01 00:00:00
abstract::A host-mediated RNA-editing event allows hepatitis delta virus (HDV) to express two essential proteins, the small delta antigen (HDAg-S) and the large delta antigen (HDAg-L), from a single open reading frame. One or several members of the ADAR (adenosine deaminases that act on RNA) family are thought to convert the ad...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.75.18.8547-8555.2001
更新日期:2001-09-01 00:00:00
abstract::Human herpesvirus 8 (HHV-8) is likely to be involved in the pathogenesis of Kaposi's sarcoma (KS) and body cavity-based lymphomas (BCBLs). The HHV-8 genome is primarily in a latent state in BCBL-derived cell lines like BCBL-1, but lytic replication can be induced by phorbol esters (R. Renne, W. Zhang, B. Herndier, M. ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.8.6725-6731.1998
更新日期:1998-08-01 00:00:00