Abstract:
:Kaposi's sarcoma (KS)-associated herpesvirus (KSHV) open reading frame 50 (ORF50) encodes a viral transcriptional activator, which binds to the KSHV promoter and stimulates the transcription of viral early and late genes, thus activating the lytic cycle of KSHV. We report here that KSHV ORF50 binds to the cellular proteins CREB-binding protein (CBP) and histone deacetylase (HDAC) and these binding events modulate ORF50-activated viral transcription. Binding of ORF50 to CBP and HDAC activates and represses, respectively, ORF50-mediated viral transcription. KSHV ORF50 was shown to bind to the C/H3 domain and the C-terminal transcriptional activation domain of CBP, while CBP bound to the amino-terminal basic domain and the carboxyl-terminal transactivation domain of ORF50. The LXXLL motif within the transcriptional activation domain of ORF50 is reminiscent of the CBP-binding sequence found in nuclear receptor proteins. The adenovirus E1A protein, which also binds to the C/H3 domain of CBP, repressed the transcriptional activation activity of ORF50. The cellular protein c-Jun, which binds to the kinase-induced activation domain of ORF50, stimulated ORF50-mediated viral transcription. The HDAC1-interacting domain of ORF50 was shown to be a central proline-rich sequence. Our data provide a framework for delineating the regulatory mechanisms used by KSHV to modulate its transcription and replication through interaction with both histone acetyltransferases and HDACs.
journal_name
J Viroljournal_title
Journal of virologyauthors
Gwack Y,Byun H,Hwang S,Lim C,Choe Jdoi
10.1128/JVI.75.4.1909-1917.2001subject
Has Abstractpub_date
2001-02-01 00:00:00pages
1909-17issue
4eissn
0022-538Xissn
1098-5514journal_volume
75pub_type
杂志文章abstract::Biological and genetic variability is a prominent feature of human immunodeficiency virus (HIV) strains, especially in tropism, syncytium formation, and replicative capacity. To determine whether there were variable host cell effects on HIV replication in monocytes, three different strains of low-passage-number monocy...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.11.7792-7803.1996
更新日期:1996-11-01 00:00:00
abstract::Cloned DNA from the P155 mutant of polyoma virus transforms cells in culture as efficiently as wild-type DNA, but has a much lower tumorigenic potential when injected into newborn rats. Like cells transformed by wild-type DNA, cells transformed by the mutant DNA grow in low serum concentrations, form colonies in agar ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.43.3.1072-1081.1982
更新日期:1982-09-01 00:00:00
abstract::Ebola virus (EBOV) causes severe hemorrhagic fever, for which therapeutic options are not available. Preventing the entry of EBOV into host cells is an attractive antiviral strategy, which has been validated for HIV by the FDA approval of the anti-HIV drug enfuvirtide. To identify inhibitors of EBOV entry, the EBOV en...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01456-10
更新日期:2011-04-01 00:00:00
abstract::Influenza viruses resistant to the neuraminidase (NA) inhibitor oseltamivir arise under drug selection pressure both in vitro and in vivo. Several mutations in the active site of the viral NA are known to confer relative resistance to oseltamivir, and influenza viruses with certain oseltamivir resistance mutations hav...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01226-08
更新日期:2008-10-01 00:00:00
abstract::Vaccinia extracellular enveloped virus (EEV) is critical for cell-to-cell and long-range virus spread both in vitro and in vivo. The B5R gene encodes an EEV-specific type I membrane protein that is essential for efficient EEV formation. The majority of the B5R ectodomain consists of four domains with homology to short...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.10.6260-6271.2005
更新日期:2005-05-01 00:00:00
abstract::Inhibitors of hemagglutination by type A2 influenza virus and a recently isolated strain of type B influenza virus were separated by sucrose density gradient centrifugation and agarose gel filtration from horse serum. Using selected reagents, it was demonstrated that the active substituent on the horse serum inhibitor...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.3.5.477-483.1969
更新日期:1969-05-01 00:00:00
abstract::Maintenance of Kaposi's sarcoma-associated herpesvirus (KSHV) latent infection depends on the viral episomes in the nucleus being distributed to daughter cells following cell division. The latency-associated nuclear antigen (LANA) is constitutively expressed in all KSHV-infected cells. LANA binds sequences in the term...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.22.11596-11604.2002
更新日期:2002-11-01 00:00:00
abstract::All herpesviruses have a layer of protein called the tegument that lies between the virion membrane and the capsid. The tegument consists of multiple, virus-encoded protein species that together can account for nearly half the total virus protein. To clarify the structure of the tegument and its attachment to the caps...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00777-09
更新日期:2009-08-01 00:00:00
abstract::The accumulation of an abnormal, protease-resistant form of the protein PrP (PrP-res) in hosts with scrapie and related transmissible spongiform encephalopathies appears to be important in disease pathogenesis. To gain insight into the mechanism of PrP-res accumulation and the in vivo antiscrapie activity of certain p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.67.2.643-650.1993
更新日期:1993-02-01 00:00:00
abstract::Polyclonal and monoclonal antibodies to individual herpes simplex virus (HSV) glycoproteins were tested for ability to inhibit adsorption of radiolabeled HSV type 1 (HSV-1) strain HFEMsyn [HSV-1(HFEM)syn] to HEp-2 cell monolayers. Polyclonal rabbit antibodies specific for glycoprotein D (gD) or gC and three monoclonal...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.55.2.475-482.1985
更新日期:1985-08-01 00:00:00
abstract::Treatment of influenza virus and its purified hemagglutining with glycosidases from Diplococcus pneumoniae, which included beta-galactosidase, beta-N-acetylglucosminidase, and endoglycosidase D, released amino and neutral sugars from the virus and these as well as large oligosaccharides from the purified hemagglutinin...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.27.1.164-171.1978
更新日期:1978-07-01 00:00:00
abstract::Herpes simplex virus virions contain one or more functions which mediate shutoff of host protein synthesis, disaggregation of host polyribosomes, and degradation of host mRNA. We studied aspects of the host shutoff mechanism by using herpes simplex virus type 1 mutants deficient in virion-induced shutoff of host prote...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.61.7.2198-2207.1987
更新日期:1987-07-01 00:00:00
abstract::An extensive genetic map of coliphage P1 has been constructed for 113 amber mutants, using primarily a modification of the conventional complementation spot test. These spot tests failed to classify the mutants into cistrons, but when they were quantitated they permitted assignment of the mutants into 10 linkage clust...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.20.1.177-187.1976
更新日期:1976-10-01 00:00:00
abstract::Further advances are required in understanding protection from AIDS by T-cell immunity. We analyzed a set of multigenic simian/human immunodeficiency virus (SHIV) DNA and fowlpox virus priming and boosting vaccines for immunogenicity and protective efficacy in outbred pigtail macaques. The number of vaccinations requi...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.24.13819-13828.2004
更新日期:2004-12-01 00:00:00
abstract::Accumulation of the interferon-stimulated gene 15 (ISG15) protein product, which is reversibly conjugated to numerous polypeptide targets, impacts the proteome and physiology of uninfected and infected cells. While many viruses, including human cytomegalovirus (HCMV), blunt host antiviral defenses by limiting ISG expr...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02483-16
更新日期:2017-04-13 00:00:00
abstract::Human cytomegalovirus UL25 codes for a structural phosphoprotein of 85 kDa (C. J. Baldick and T. Shenk, J. Virol. 70:6097-6105, 1996; M. C. Battista et al., J. Virol. 73:3800-3809, 1999). In this study we analyzed the intracellular and intraviral localization of pUL25 by confocal and immunoelectron microscopy and foun...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.7.6073-6075.1999
更新日期:1999-07-01 00:00:00
abstract::The nonstructural 4B (NS4B) protein of hepatitis C virus (HCV) plays a central role in the formation of the HCV replication complex. To gain insight into the role of charged residues for NS4B function in HCV RNA replication, alanine substitutions were engineered in place of 28 charged residues residing in the N- and C...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00858-11
更新日期:2011-08-01 00:00:00
abstract:UNLABELLED:Virus entry into cells is a multistep process that often requires the subversion of subcellular machineries. A more complete understanding of these steps is necessary to develop new antiviral strategies. While studying the potential role of the actin network and one of its master regulators, the small GTPase...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00103-16
更新日期:2016-04-14 00:00:00
abstract::Wild-type simian virus 40 A protein (large T antigen) bound to three tandem regions of simian virus 40 DNA. The binding regions were defined by the ability of A protein to protect simian virus 40 DNA from digestion with limited (footprint assay) or excess (fragment assay) amounts of DNase I. At low concentrations, pro...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.44.2.458-466.1982
更新日期:1982-11-01 00:00:00
abstract::The size of the product RNA synthesized by the poliovirus RNA polymerase and host factor was significantly affected by the type of column chromatography used to purify the polymerase. Dimer length product RNA was synthesized by the polymerase purified by chromatography on hydroxylapatite. This contrasted with the mono...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.61.2.611-614.1987
更新日期:1987-02-01 00:00:00
abstract::In an earlier study on minus-strand DNA synthesis catalyzed by murine leukemia virus reverse transcriptase, we described a prominent pause site near the polypurine tract (J. Guo, W. Wu, Z. Y. Yuan, K. Post, R. J. Crouch, and J. G . Levin, Biochemistry 34:5018-5029, 1995). We now report that pausing at this site is due...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.10.7132-7142.1996
更新日期:1996-10-01 00:00:00
abstract::The simian-human immunodeficiency virus SHIV-HXBc2 contains the envelope glycoproteins of a laboratory-adapted, neutralization-sensitive human immunodeficiency virus type 1 variant, HXBc2. Serial in vivo passage of the nonpathogenic SHIV-HXBc2 generated SHIV KU-1, which causes rapid CD4(+) T-cell depletion and an AIDS...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.9.4208-4218.2001
更新日期:2001-05-01 00:00:00
abstract::Human cytomegalovirus (HCMV) virions are composed of a DNA-containing nucleocapsid surrounded by a tegument layer and host-derived lipid envelope studded with virally encoded glycoproteins. These complex virions are estimated to be composed of more than 50 viral proteins. Assembly of HCMV virions is poorly understood,...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01551-10
更新日期:2011-01-01 00:00:00
abstract::Bicistronic RNAs containing the 373-nucleotide-long 5' nontranslated region (NTR) of the classical swine fever virus (CSFV) genome as intercistronic spacer were used to show the presence of an internal ribosome entry site (IRES) in the 5' end of the CSFV genome. By coexpression of the poliovirus 2A protease it was dem...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.1.451-457.1997
更新日期:1997-01-01 00:00:00
abstract::A tumor line (58-2T) was established from a slowly growing tumor in a BALB/c mouse inoculated with M58-2 cells. The latter clonal cell line was isolated after bromodeoxyuridine treatment as a flat variant from nonproducer BALB/3T3 cells transformed by the Kirsten sarcoma virus. The 58-2T cells produced type C virus wi...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.14.5.1262-1267.1974
更新日期:1974-11-01 00:00:00
abstract::In infected cells, hepatitis C virus (HCV) induces the formation of membrane alterations referred to as membranous webs, which are sites of RNA replication. In addition, HCV RNA replication also occurs in smaller membrane structures that are associated with the endoplasmic reticulum. However, cellular mechanisms invol...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01190-09
更新日期:2010-01-01 00:00:00
abstract::The members of Flaviviridae utilize several endocytic pathways to enter a variety of host cells. Our previous work showed that classical swine fever virus (CSFV) enters porcine kidney (PK-15) cells through a clathrin-dependent pathway that requires Rab5 and Rab7. The entry mechanism for CSFV into other cell lines rema...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00797-18
更新日期:2018-07-17 00:00:00
abstract::Highly active antiretroviral therapy (HAART) enables long-term suppression of plasma HIV-1 loads in infected persons, but low-level virus persists and rebounds following cessation of therapy. During HAART, this virus resides in latently infected cells, such as resting CD4(+) T cells, and in other cell types that may s...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02356-09
更新日期:2010-03-01 00:00:00
abstract::Hepatitis A virus (HAV) has previously been reported to bind to human red blood cells through interaction with glycophorin A. Residue K221 of VP1 and the surrounding VP3 residues are involved in such an interaction. This capsid region is specifically recognized by the monoclonal antibody H7C27. A monoclonal antibody-r...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00707-12
更新日期:2012-08-01 00:00:00
abstract::Simian immunodeficiency virus (SIV) infection of natural hosts is characterized by nonpathogenic chronic viremia, maintenance of gastrointestinal epithelial barrier integrity, and low numbers of target cells. Assessment of cell-associated virus load in T cell subsets in multiple anatomic compartments of chronically SI...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01556-12
更新日期:2012-10-01 00:00:00