Abstract:
:Techniques are described for the growth and rapid purification of the avian coronavirus infectious bronchitis virus (IBV). Purified IBV has a sedimentation coefficient of 320S and a buoyant density of 1.22 g/ml in sucrose-deuterium oxide equilibrium gradients. IBV RNA extracted by proteinase K in the presence of sodium dodecyl sulfate and further purified by phenol extraction and gradient centrifugation is single stranded and has a sedimentation coefficient of 64S, as determined by isokinetic gradient centrifugation. Analysis on sucrose gradients under both aqueous and denaturing conditions together with agarose gel electrophoresis in the presence of the chaotropic agent methylmercuric hydroxide gave a value of 8 X 10(6) for the moleclar weight of IBV RNA. This value was confirmed by RNase T1 fingerprinting, which also indicated that IBV RNA is haploid. No evidence was found of subunit structure in IBV RNA. From these results together with the recently reported observation that IBV RNA is infectious and contains a tract of polyadenylic acid (Lomniczi, J. Gen. Virol., in press), we conclude that the genome of the coronaviruses is a single continuous chain of about 23,000 mononucleotides that is of messenger polarity.
journal_name
J Viroljournal_title
Journal of virologyauthors
Lomniczi B,Kennedy Idoi
10.1128/JVI.24.1.99-107.1977subject
Has Abstractpub_date
1977-10-01 00:00:00pages
99-107issue
1eissn
0022-538Xissn
1098-5514journal_volume
24pub_type
杂志文章abstract::The Chinese hamster cell lines E36 and CHOK1 dramatically differ in susceptibility to amphotropic murine leukemia virus (A-MuLV) and gibbon ape leukemia virus (GALV); E36 cells are highly susceptible to both viruses, CHOK1 cells are not. We have previously shown that GALV can infect E36 cells by using both its own rec...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.73.4.2916-2920.1999
更新日期:1999-04-01 00:00:00
abstract::Mutants (N(-)nin) of bacteriophage lambda in which the N gene product is not required for growth on wild-type Escherichia coli do not plate on recA bacterial mutants. Secondary mutants, selected for growth on recA, lie within the immunity region to the right of gene cI and appear identical to the cro mutants of Eisen ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.9.6.938-945.1972
更新日期:1972-06-01 00:00:00
abstract::We analyzed a region of the capsid of canine parvovirus (CPV) which determines the ability of the virus to infect canine cells. This region is distinct from those previously shown to determine the canine host range differences between CPV and feline panleukopenia virus. It lies on a ridge of the threefold spike of the...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.12.9214-9222.1997
更新日期:1997-12-01 00:00:00
abstract::The 55-kDa E1B protein of adenovirus, which binds to and inactivates the tumor suppressor protein p53, is not expressed in the adenoviral mutant termed ONYX-015 (i.e., dl1520). It was reported that the mutant virus due to a deletion in E1B is able to replicate only in cells deficient for wild-type p53. Accordingly, dl...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.12.9470-9478.1998
更新日期:1998-12-01 00:00:00
abstract::The enhancer of human papillomavirus type 16 (HPV-16) is considered to be specific for epithelial cells, in particular for cervical carcinoma-derived cell lines. We reexamined this hypothesis with the complete enhancer as well as nonoverlapping subclones and found all clones to be active in epithelial cell lines deriv...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.11.5933-5943.1991
更新日期:1991-11-01 00:00:00
abstract::Retroviral genomes are dimeric, comprised of two sense-strand RNAs linked at their 5' ends by noncovalent base pairing and tertiary interactions. Viral maturation involves large-scale morphological changes in viral proteins and in genomic RNA dimer structures to yield infectious virions. Structural studies have largel...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01602-09
更新日期:2010-01-01 00:00:00
abstract::A widespread porcine epidemic diarrhea virus (PEDV) occurred in southern China during 2010 to 2012. A virulent field PEDV strain, GD-B, was isolated from a sucking piglet suffering from severe diarrhea in Guangdong, China. We sequenced and analyzed the complete genome of strain GD-B, which will promote a better unders...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01455-12
更新日期:2012-09-01 00:00:00
abstract::Human cytomegalovirus (HCMV) encodes several proteins that inhibit major histocompatibility complex (MHC) class I-dependent antigen presentation. The HCMV products US2 and US11 are each sufficient for causing the dislocation of human and murine MHC class I heavy chains from the lumen of the endoplasmic reticulum to th...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.10.5043-5050.2002
更新日期:2002-05-01 00:00:00
abstract::Japanese encephalitis virus (JEV) is a mosquito-borne flavivirus and one of the most common agents of viral encephalitis. The infectious entry process of JEV into host cells remains largely unknown. Here, we present a systemic study concerning the cellular entry mechanism of JEV to B104 rat neuroblastoma cells. It was...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00903-12
更新日期:2012-12-01 00:00:00
abstract::Deletion of the terminal repeats (TR) from herpesvirus saimiri (HVS) renders it unable to produce infectious virus or generate plaques. However, a TR-deleted HVS bacterial artificial chromosome can form replication compartments. Complementation of this mutant shows that one copy of the TR, plus the right junction of t...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02579-06
更新日期:2007-06-01 00:00:00
abstract::Severe complications of Zika virus (ZIKV) infection might be caused by inflammation, but how ZIKV induces proinflammatory cytokines is not understood. In this study, we show opposite regulatory effects of the ZIKV NS5 protein on interferon (IFN) signaling. Whereas ZIKV and its NS5 protein were potent suppressors of ty...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00163-17
更新日期:2017-06-26 00:00:00
abstract::Longitudinal studies of T cell immune responses during viral infections in humans are essential for our understanding of how effector T cell responses develop, clear infection, and provide long-lasting immunity. Here, following an outbreak of a Puumala hantavirus infection in the human population, we longitudinally an...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.05548-11
更新日期:2011-10-01 00:00:00
abstract::The human immunodeficiency virus type 1 (HIV-1) protease (PR) makes five obligatory cleavages in the viral Gag polyprotein precursor. The cleavage events release the virion structural proteins from the precursor and allow the virion to undergo maturation to become infectious. The protease cleavage between the matrix p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00317-09
更新日期:2009-09-01 00:00:00
abstract::By marker rescue with cloned herpes simplex virus 2 DNA fragments, we have mapped the temperature-sensitive mutations of a series of herpes simplex virus 2 mutants to a region of the herpes simplex virus 2 genome that lies within or near the coding sequences for the major DNA-binding protein, ICP8. In cells infected w...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.45.1.332-342.1983
更新日期:1983-01-01 00:00:00
abstract::Molecularly defined vaccine formulations capable of inducing antiviral CD8+ T-cell-specific immunity in a manner compatible with human delivery are limited. Few molecules achieve this target without the support of an appropriate immunological adjuvant. In this study, we investigate the potential of totally synthetic p...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.24.15289-15301.2005
更新日期:2005-12-01 00:00:00
abstract::Newcastle disease virus (NDV) California strain reportedly grows poorly in L cells but replicates very well in chicken embryo cells. NDV-infected L cell cultures show a characteristic virus growth curve with respect to uridine incorporation, but plaque assays of the virus produced 24 h postinfection (PI) show no infec...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.14.1.162-169.1974
更新日期:1974-07-01 00:00:00
abstract::Four new nondefective adenovirus 2 (Ad2)-simian virus 40 (SV40) hybrid viruses have been isolated. Although these viruses (designated Ad2(+)ND(2), Ad2(+)ND(3), Ad2(+)ND(4), and Ad2(+)ND(5)) were clonal derivatives of the same Ad2-SV40 hybrid population, they differ significantly from each other and from the previously...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.11.5.655-664.1973
更新日期:1973-05-01 00:00:00
abstract::Several point mutations in the simian virus 40 (SV40) small-t antigen have been analyzed for their effects on protein stability, transformation, transactivation, and binding of two cellular proteins. All mutations which affected cysteine residues in two cysteine clusters produced highly unstable small-t antigens. Four...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.64.6.2895-2900.1990
更新日期:1990-06-01 00:00:00
abstract::Rhesus monkey rhadinovirus (RRV) is a close relative of Kaposi's sarcoma-associated herpesvirus (KSHV; human herpesvirus 8). RRV serves as an in vitro and an in vivo model for KSHV, and the mapping of its transcription program during lytic replication is significant since it represents de novo infection in the absence...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.19.9819-9831.2002
更新日期:2002-10-01 00:00:00
abstract::Nef is a regulatory gene product of human immunodeficiency virus type 1 (HIV-1) and other primate lentiviruses which enhances virion infectivity by an unknown mechanism. We report here that Nef is detectable at moderate levels in preparations of HIV-1 virions which lack active viral protease (PR). Significantly smalle...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.2.1013-1018.1997
更新日期:1997-02-01 00:00:00
abstract:UNLABELLED:While numerous viral microRNAs (miRNAs) expressed by DNA viruses, especially herpesvirus family members, have been reported, there have been very few reports of miRNAs derived from RNA viruses. Here we describe three miRNAs expressed by bovine foamy virus (BFV), a member of the spumavirus subfamily of retrov...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.03587-13
更新日期:2014-05-01 00:00:00
abstract::The identification of several simian immunodeficiency virus mac251 (SIV(mac251)) cytotoxic T-lymphocyte epitopes recognized by CD8(+) T cells of infected rhesus macaques carrying the Mamu-A*01 molecule and the use of peptide-major histocompatibility complex tetrameric complexes enable the study of the frequency, bread...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.75.23.11483-11495.2001
更新日期:2001-12-01 00:00:00
abstract::The yeast retrotransposon Ty1 resembles retroviruses in a number of important respects but also shows several fundamental differences from them. We now report that, as in retroviruses, the genomic RNA in Ty1 virus-like particles is dimeric. The Ty1 dimers also resemble retroviral dimers in that they are stabilized dur...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.22.10819-10821.2000
更新日期:2000-11-01 00:00:00
abstract::Dengue virus (DENV) and hepatitis C virus (HCV), members of the family Flaviviridae, are global human health concerns. As positive-strand RNA viruses, they each replicate in the cytoplasm of infected cells and induce distinct membranous replication compartments where most, if not all, steps of the viral life cycle occ...
journal_title:Journal of virology
pub_type: 杂志文章,评审
doi:10.1128/JVI.03404-13
更新日期:2014-06-01 00:00:00
abstract::The salivary glands of scrapie-affected sheep and healthy controls were investigated for the presence of the pathological prion protein (PrP(Sc)). PrP(Sc) was detected in major (parotid and mandibular) and minor (buccal, labial, and palatine) salivary glands of naturally and experimentally infected sheep. Using Wester...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02148-06
更新日期:2007-05-01 00:00:00
abstract:UNLABELLED:Antibodies against the fusion (F) protein of respiratory syncytial virus (RSV) play an important role in the protective immune response to this important respiratory virus. Little is known, however, about antibody levels against multiple F-specific epitopes induced by infection or after vaccination against R...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00235-16
更新日期:2016-06-10 00:00:00
abstract::Cyclooxygenase-2 (COX-2) is a cellular enzyme in the eicosanoid synthetic pathway that mediates the synthesis of prostaglandins from arachidonic acid. The eicosanoids function as critical regulators of a number of cellular processes, including the acute and chronic inflammatory response, hemostasis, and the innate imm...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.78.22.12529-12536.2004
更新日期:2004-11-01 00:00:00
abstract:UNLABELLED:TRIM5α proteins are a potent barrier to the cross-species transmission of retroviruses. TRIM5α proteins exhibit an ability to self-associate at many levels, ultimately leading to the formation of protein assemblies with hexagonal symmetry in vitro and cytoplasmic assemblies when expressed in cells. However, ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01134-14
更新日期:2014-08-01 00:00:00
abstract::The distantly related lentiviruses human immunodeficiency virus type 1 (HIV-1) and visna virus each encode a posttranscriptional regulatory protein, termed Rev, that is critical for expression of the viral structural proteins. We genetically mapped the cis-acting target sequence for visna virus Rev, the visna virus Re...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.66.6.3609-3615.1992
更新日期:1992-06-01 00:00:00
abstract::Jurkat T-cell clones, stably expressing the human immunodeficiency virus type 1 (HIV-1) Vpr protein, exhibited an impaired susceptibility to HIV-1 infection. A marked down-modulation of surface CD4 receptors was detected in Vpr-expressing clones with respect to control cells. Likewise, a reduced CD4 expression was als...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.21.10207-10211.2000
更新日期:2000-11-01 00:00:00