Abstract:
:DNA polymerase activity was detected in each of eight preparations of concentrated human hepatitis B antigen (HBAg) rich in Dane particles prepared by high-speed centrifugation of antigen-positive human plasma and in none of seven control preparations prepared in the same way from HBAg-negative plasma. The incorporation of (3)H-thymidine-methyl-5'-triphosphate into DNA was dependent on four deoxyribonucleoside triphosphates and MgCl(2). Treatment of the concentrated HBAg preparations with the nonionic detergent Nonidet P-40 (NP40) more than doubled the enzyme activity. Fractionation of the concentrated HBAg preparation in sucrose density gradients after treatment with NP40 revealed that the enzyme activity appeared within the density range of Dane core antigen but at a slightly higher density than the average for core antigen. The only particles observed by electron microscopy in this region of the gradient were typical 28-nm cores, suggesting that the DNA polymerase activity was associated with a subpopulation of cores. No DNA polymerase activity was found in purified 20-nm HBAg particles. The DNA product of the reaction remained associated with the 110S core and was not susceptible to DNase digestion when associated with the core. Inhibition of the reaction by actinomycin D and daunomycin suggested that the reaction was dependent on a DNA template associated with the core.
journal_name
J Viroljournal_title
Journal of virologyauthors
Kaplan PM,Greenman RL,Gerin JL,Purcell RH,Robinson WSdoi
10.1128/JVI.12.5.995-1005.1973subject
Has Abstractpub_date
1973-11-01 00:00:00pages
995-1005issue
5eissn
0022-538Xissn
1098-5514journal_volume
12pub_type
杂志文章abstract::Complementary DNA clones encoding the murine homolog (mCAR) of the human coxsackievirus and adenovirus receptor (CAR) were isolated. Nonpermissive CHO cells transfected with mCAR cDNA became susceptible to infection by coxsackieviruses B3 and B4 and showed increased susceptibility to adenovirus-mediated gene transfer....
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.1.415-419.1998
更新日期:1998-01-01 00:00:00
abstract::Previous results have indicated that Rous sarcoma virus env gene expression is specifically inhibited by antisense RNA (L.-J. Chang and C. M. Stoltzfus, Mol. Cell. Biol. 5:2341-2348, 1985). In this study, we compare the extents of inhibition by antisense RNA derived from different parts of the Rous sarcoma virus genom...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.61.3.921-924.1987
更新日期:1987-03-01 00:00:00
abstract:UNLABELLED:Influenza A viruses (IAVs) rely on host factors to support their life cycle, as viral proteins hijack or interact with cellular proteins to execute their functions. Identification and understanding of these factors would increase our knowledge of the molecular mechanisms manipulated by the viruses. In this s...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02170-14
更新日期:2015-01-01 00:00:00
abstract::Primary telencephalic cultures derived from neonatal Wistar Furth rats were able to support the growth of coronavirus JHM if a viable neuronal population was maintained. This occurred under serum-free defined, but not serum-supplemented, growth conditions. The importance of neurons in establishing infections in mixed ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.9.5013-5028.1991
更新日期:1991-09-01 00:00:00
abstract::Activation of IκB kinase subunit γ (IKKγ), a key regulator of the classical NF-κB pathway, by the vFLIP protein of Kaposi's sarcoma-associated herpesvirus (KSHV) and the Tax protein of human T cell lymphotropic virus type 1 (HTLV1) is essential for virus-associated cancer. We show that vFLIP and Tax activate this path...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02337-10
更新日期:2011-07-01 00:00:00
abstract::The baculovirus Autographa californica multiple nucleopolyhedrovirus (AcMNPV), the type species of alphabaculoviruses, is an enveloped DNA virus that infects lepidopteran insects and is commonly known as a vector for protein expression and cell transduction. AcMNPV belongs to a diverse group of viral and bacterial pat...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00111-18
更新日期:2018-05-14 00:00:00
abstract::A herpes simplex virus type 1 variant [C239(TK-)] harboring a deletion in the thymidine kinase (TK) gene was assessed for capacity to establish latent infections. Outbred Swiss Webster mice were inoculated on both hind footpads, and numbers of neurons expressing latency-associated transcript and amounts of viral DNA i...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.63.11.4976-4978.1989
更新日期:1989-11-01 00:00:00
abstract::Stress signaling from mitochondria and the endoplasmic reticulum (ER) leads to the induction of the proapoptotic transcription factor CHOP/GADD153. Many viruses use the ER as a site of replication and/or envelopment, and this activity can lead to the activation of ER stress and apoptosis. African swine fever virus (AS...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.19.10825-10828.2004
更新日期:2004-10-01 00:00:00
abstract:UNLABELLED:Increased detection of enterovirus 68 (EV68) among patients with acute respiratory infections has been reported from different parts of the world in the late 2000s since its first detection in pediatric patients with lower-respiratory-tract infections in 1962. However, the underlying molecular mechanisms for...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03070-13
更新日期:2014-03-01 00:00:00
abstract::Kaposi sarcoma-associated herpesvirus (KSHV) is an emerging pathogen and is the causative infectious agent of Kaposi sarcoma and two malignancies of B cell origin. To date, there is no licensed KSHV vaccine. Development of an effective vaccine against KSHV continues to be limited by a poor understanding of how the vir...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00630-19
更新日期:2019-07-30 00:00:00
abstract::HIV protease is known to cause cell death, which is dependent upon cleavage of procaspase 8. HIV protease cleavage of procaspase 8 generates Casp8p41, which directly binds Bak with nanomolar affinity, causing Bak activation and consequent cell death. Casp8p41 can also bind Bcl2 with nanomolar affinity, in which case c...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00037-18
更新日期:2018-06-13 00:00:00
abstract::T cells are central players in the immune response to infectious disease, with the specificity of their responses controlled by the T-cell receptor (TCR)/CD3 complex on the cell surface. Impairment of TCR/CD3-directed CD4(+) T-cell immune responses is frequently observed in individuals infected with human immunodefici...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.6.5207-5213.1999
更新日期:1999-06-01 00:00:00
abstract:UNLABELLED:Many murine leukemia viruses (MLVs) are partially resistant to restriction by mouse APOBEC3 (mA3) and essentially fully resistant to induction of G-to-A mutations by mA3. In contrast, Vif-deficient HIV-1 (ΔVif HIV-1) is profoundly restricted by mA3, and the restriction includes high levels of G-to-A mutation...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03456-13
更新日期:2014-04-01 00:00:00
abstract::The yield of G418-resistant Huh7 cell clones bearing subgenomic dicistronic GB virus B (GBV-B) is significantly affected by the insertion of a portion of the viral core gene between the GBV-B 5' untranslated region and the exogenous neomycin phosphotransferase selector gene (A. De Tomassi, M. Pizzuti, R. Graziani, A. ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.13.7502-7509.2003
更新日期:2003-07-01 00:00:00
abstract::Proteasome inhibitors (e.g., bortezomib, MG132) are known to enhance adeno-associated virus (AAV) transduction; however, whether this results from pleotropic proteasome inhibition or off-target serine and/or cysteine protease inhibition remains unresolved. Here, we examined recombinant AAV (rAAV) effects of a new prot...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01826-13
更新日期:2013-12-01 00:00:00
abstract:UNLABELLED:An altered intestinal microbiome during chronic human immunodeficiency virus (HIV) infection is associated with mucosal dysfunction, inflammation, and disease progression. We performed a preclinical evaluation of the safety and efficacy of fecal microbiota transplantation (FMT) as a potential therapeutic in ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00099-16
更新日期:2016-04-29 00:00:00
abstract::The RNA of infectious bursal disease virus was reexamined in a detailed analysis. It could be established that its genome consists of two segments of double-stranded RNA. The RNA is RNase resistant and has a sedimentation coefficient of 14S and a buoyant density of 1.62 g/ml. The purine/pyrimidine ratio is nearly 1; t...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.31.3.584-589.1979
更新日期:1979-09-01 00:00:00
abstract::During infection, adenovirus-associated virus (AAV) undergoes microtubule-dependent retrograde transport as part of a program of vectorial transport of viral genome to the nucleus. A microtubule binding assay was used to evaluate the hypothesis that cytoplasmic dynein mediates AAV interaction with microtubules. Bindin...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00481-06
更新日期:2006-08-01 00:00:00
abstract::Bovine herpesvirus 1 (BHV-1) establishes a latent infection in sensory ganglionic neurons of cattle. During a latent infection, a single latency-related (LR) transcript is expressed. This observation suggested that DNA sequences in the LR promoter are positively regulated by neural cell type factors. The regulation of...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.66.10.6099-6106.1992
更新日期:1992-10-01 00:00:00
abstract::The presence of complement-fixing (CF) antibody reactive with T antigen and with viral C antigen in hamsters bearing adenovirus 12-induced tumors has been confirmed. Antibody activity in serum obtained at a time when the host was bearing large tumors was found to be associated exclusively with 7S immunoglobulins. Two ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.1.4.678-683.1967
更新日期:1967-08-01 00:00:00
abstract::Differential effect of various metabolic inhibitors on the development of hemadsorption activity and virus formation in cells infected with Newcastle disease virus (NDV) was investigated. It was found that, in BHK-21 cells infected with NDV, cycloheximide did not prevent the development of hemadsorption activity, wher...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.11.4.479-486.1973
更新日期:1973-04-01 00:00:00
abstract::After entering a host cell, retroviruses such as simian immunodeficiency virus (SIV) uncoat, disassembling the viral capsid. Rates of uncoating that are too high and too low can be detrimental to the efficiency of infection. Rapid uncoating typically leads to blocks in reverse transcription, but the basis for replicat...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03239-12
更新日期:2013-04-01 00:00:00
abstract::Bovine viral diarrhea virus (BVDV), a pestivirus of the Flaviviridae family, is an economically important cattle pathogen with a worldwide distribution. Both noncytopathic (ncp) and cytopathic (cp) biotypes of BVDV can be isolated from persistently infected cattle suffering from the lethal mucosal disease. The cp biot...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.10.4692-4698.2001
更新日期:2001-05-01 00:00:00
abstract::Myxoma virus (MV) encodes a cell surface protein (M135R) that is predicted to mimic the host alpha/beta interferon receptor (IFN-alpha/beta-R) and thus prevent IFN-alpha/beta from triggering a host antiviral response. This prediction is based on sequence similarity to B18R, the viral IFN-alpha/beta-R from vaccinia vir...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01633-06
更新日期:2007-01-01 00:00:00
abstract::T7 early mRNA's are generated from a high-molecular-weight precursor RNA by site-specific RNase III cleavage. When T7 DNA is transcribed in vitro by Escherichia coli RNA polymerase, the transcript is a large, single-piece RNA equivalent to the in vivo precursor RNA. The T7 RNA synthesized in vitro can be translated as...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.18.3.1155-1159.1976
更新日期:1976-06-01 00:00:00
abstract::A specific endoribonucleolytic activity was detected when detergent-lysed vesicular stomatitis of Sendai virus was incubated with the precursor to Escherichia coli tRNA Tyr. The cleavage products produced and the characteristics of the reaction were similar to those previously reported for human KB cell RNase NU. Like...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.25.1.274-284.1978
更新日期:1978-01-01 00:00:00
abstract::Immunity to human immunodeficiency virus virion-like structures or a polyprotein has been examined after DNA immunization with Rev-independent expression vectors. A Gag-Pol fusion protein stimulated cytotoxic T lymphocyte and antibody responses to Gag and Pol, while a Gag-Pol pseudoparticle did not elicit substantial ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.10.4947-4951.2001
更新日期:2001-05-01 00:00:00
abstract::The binding specificities of a panel of avian influenza virus subtype H5 hemagglutinin (HA) proteins bearing mutations at key residues in the receptor binding site were investigated. The results demonstrate that two simultaneous mutations in the receptor binding site resulted in H5 HA binding in a pattern similar to t...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.78.1.502-507.2004
更新日期:2004-01-01 00:00:00
abstract::Influenza virus defective interfering (DI) particles are naturally occurring noninfectious virions typically generated during in vitro serial passages in cell culture of the virus at a high multiplicity of infection. DI particles are recognized for the role they play in inhibiting viral replication and for the impact ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00240-13
更新日期:2013-07-01 00:00:00
abstract::Sequences which encode Epstein-Barr virus (EBV) RNA in nasopharyngeal carcinoma (NPC) tissue have been identified. We utilized human biopsy material directly as well as NPC grown in nude mice. Total RNA was extracted from the tumor material and separated into polyadenylated and nonpolyadenylated fractions by oligodeox...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.48.3.580-590.1983
更新日期:1983-12-01 00:00:00