Abstract:
:Alternative splicing of pre-mRNAs plays a critical role in maximizing the coding capacity of the small parvovirus genome. The small-intron region of minute virus of mice (MVM) pre-mRNAs undergoes an unusual pattern of overlapping alternative splicing, using two donors, D1 and D2, and two acceptors, A1 and A2, within a region of 120 nucleotides, that governs the steady-state ratios of the various viral mRNAs. In a previous report we demonstrated that a complex interaction between both donor and acceptor sequences, as well as the constraints of size, defines the small intron and governs its alternative splicing. We also identified a G-rich intronic splicing enhancer sequence (IES) that appeared to function as both an intron- and an exon-defining element. In this report we further examined the components that govern MVM small-intron splicing. In fully processed wild-type mRNAs, A1 is used preferentially over A2. In this report, we show that in the context of the wild-type small intron the position of the downstream acceptor A2 was preferred, and the primary sequence of A1 must be stronger for it to be utilized at wild-type efficiency. Use of A2 in generation of the minor spliced forms D2/A2 required the IES because of a weak A2 polypyrimidine tract and because of the relative strength of A1. The small size of the intron and the relative position of the IES were also shown to play a critical role in donor and acceptor site selection. Finally, we have further characterized how the IES functions as an intronic enhancer of upstream exon definition. When the small intron was expanded, upstream exon inclusion was dependent upon the position of the IES. Within the context of the small intron, alterations of the small intron that overcame the requirement for the IES for splicing to A2 also permitted wild-type levels of upstream exon inclusion in the absence of the IES, suggesting that, in its natural context, the IES facilitates upstream exon inclusion by affecting small-intron definition.
journal_name
Virologyjournal_title
Virologyauthors
Haut DD,Pintel DJdoi
10.1006/viro.1999.9696subject
Has Abstractpub_date
1999-05-25 00:00:00pages
84-94issue
1eissn
0042-6822issn
1096-0341pii
S0042-6822(99)99696-4journal_volume
258pub_type
杂志文章相关文献
VIROLOGY文献大全abstract::Infectious pancreatic necrosis is an important viral disease of salmonid fish reared in hatchery. Its etiological agent, IPNV, showed a high degree of antigenic heterogeneity. Up to 10 serotypes and 2 serogroups were proposed. Yet, very little is known about genomic variations among viruses of different origin. In ord...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1993.1441
更新日期:1993-08-01 00:00:00
abstract::We have constructed a recombinant baculovirus expressing high levels of the herpes simplex virus type 1 (HSV-1) glycoprotein E (gE) in Sf9 cells. The expressed gE migrated on gels as a double band with apparent molecular weights of 68 and 70 kDa. The recombinant gE was glycosylated based on its susceptibility to tunic...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(92)90500-o
更新日期:1992-06-01 00:00:00
abstract::We investigated the localization of host mRNA during Rift Valley fever virus (RVFV) infection. Fluorescence in situ hybridization revealed that infection with RVFV altered the localization of host mRNA. mRNA accumulated in the nuclei of RVFV-infected but not mock-infected cells. Further, overexpression of the NSS gene...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2015.09.003
更新日期:2015-12-01 00:00:00
abstract::Retroviral Gag proteins function during early and late stages of the viral life cycle. To gain additional insight into the cellular requirements for viral replication, a two-hybrid screen was used to identify cellular proteins that interact with the Mason-Pfizer monkey virus Gag protein. One of the cellular proteins f...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/s0042-6822(03)00348-9
更新日期:2003-09-15 00:00:00
abstract::We previously demonstrated in trials of a variety of experimental vaccines to equine infectious anemia virus (EIAV) a remarkable spectrum of efficacy ranging from sterilizing protection to severe enhancement of virus replication and disease, depending on the immunization strategy used. This range of vaccine efficacy o...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1999.9939
更新日期:1999-09-30 00:00:00
abstract::Sequence variants of the Epstein-Barr virus (EBV)-encoded latent membrane protein-1 (LMP1) have been reported in association with EBV-linked malignancies but little is known about their effects on signalling pathways and phenotype. We have examined the ability of the nasopharyngeal carcinoma (NPC)-derived variant, CAO...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.2001.0828
更新日期:2001-04-10 00:00:00
abstract::A mutant (dp 201) of human adenovirus type 2 has been isolated that has the left 3% (1110 bp) of the genome duplicated at the right terminus. The structure of the mutant genome was studied by restriction endonuclease analysis and by direct DNA sequence analysis. The duplication has resulted in a deletion of 10 bp of t...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(83)90177-0
更新日期:1983-09-01 00:00:00
abstract::The virulence of herpes simplex virus-1 (HSV-1) strains by the intraperitoneal (ip) route of injection in mice depends on the presence of an intact sequence in the HpaI DNA fragment P within coordinates 0.762 to 0.787. Deletion of the HpaI-P region (e.g., strain HFEM) abrogates the ability of the virus to infect mice ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(86)90128-5
更新日期:1986-03-01 00:00:00
abstract::Begomoviruses (family Geminiviridae) are responsible for many economically important crop diseases worldwide. The majority of these diseases are caused by bipartite begomovirus infections, although a rapidly growing number of diseases of the Old World are associated with monopartite begomoviruses. With the exception o...
journal_title:Virology
pub_type: 杂志文章,随机对照试验,评审
doi:10.1016/j.virol.2005.09.042
更新日期:2006-01-05 00:00:00
abstract::To investigate the role of alfalfa mosaic virus coat protein (CP) in genome activation, asymmetric plus-strand RNA accumulation, and cell-to-cell spread of the virus, mutations were made in the CP gene and putative CP binding sites in the 3'-untranslated region (UTR) of RNA 3. Mutants that produced no CP-related pepti...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1994.1411
更新日期:1994-08-01 00:00:00
abstract::The lentivirus caprine arthritis-encephalitis virus (CAEV) is closely related by nucleotide sequence homology to visna virus and other sheep lentiviruses and shows less similarity to the other animal and human lentiviruses. The genomic organization of CAEV is very similar to that of visna virus and the South African o...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(90)90303-9
更新日期:1990-11-01 00:00:00
abstract::The preS(21-47) sequence of the hepatitis B virus (HBV) envelope protein is involved in binding of the virus to cell receptors. A protein similarity search revealed a partial homology between this sequence and a segment of the human immunoglobulin A (IgA) heavy chain constant region, suggesting that the cell attachmen...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(90)90368-2
更新日期:1990-10-01 00:00:00
abstract::We previously analyzed hybrids of Cucumber mosaic virus (CMV) and Tomato aspermy virus (TAV) that contained CMV RNA2 with the 3'-terminal sequence from TAV RNA2. In this article, we scrutinized the RNA3 molecules in these hybrid viruses by Northern hybridization and RT-PCR and found some recombinant CMV RNA3 molecules...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/s0042-6822(02)00050-8
更新日期:2003-02-01 00:00:00
abstract::Both the brome mosaic virus (BMV) and cowpea chlorotic mottle virus (CCMV) RNA-dependent RNA polymerases (RdRps) were found to recognize the BMV core subgenomic promoter in the same manner, requiring specific functional groups at positions -17, -14, -13, and -11 relative to the subgenomic initiation site (+1). For CCM...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1998.9449
更新日期:1998-12-05 00:00:00
abstract::The function of rice dwarf virus segment 11 and the corresponding segments of other phytoreoviruses is not yet determined. The amino acid sequence of Pns11, encoded by segment 11, contains a putative zinc finger and five flanking basic regions at the C-terminus. The full-length Pns11 protein and three truncated deriva...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1997.8945
更新日期:1998-01-20 00:00:00
abstract::A sensitive and efficient system for the functional assay of antisense oligonucleotides (oligos) was developed based on an in vitro viral assembly system. A 120-base RNA (pRNA), which indispensably participates in bacteriophage phi 29 DNA packaging, was the target for antisense action. Antisense oligos bound to pRNA, ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1995.1439
更新日期:1995-08-20 00:00:00
abstract::Abnormal reinitiation of replication from lambda origins has previously been found during infection in the presence of caffeine or cis-diamminedichloroplatinum II (cis-Pt) or when lambda infects a P2 lysogen. It was further shown that the reinitiations arising from cis-Pt treatment took place during the SOS response i...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(87)90201-7
更新日期:1987-06-01 00:00:00
abstract::The tobacco etch virus 27-kDa nuclear inclusion a (NIa) proteinase was expressed in Escherichia coli as a recombinant fusion protein containing a seven-histidine tag at the amino-terminus. Catalytically active and inactive (by virtue of a single amino acid change) forms of the proteinase were purified to homogeneity i...
journal_title:Virology
pub_type: 杂志文章
doi:10.1006/viro.1995.1331
更新日期:1995-06-20 00:00:00
abstract::Bovine respiratory disease (BRD) is the costliest disease affecting the cattle industry globally. Orthomyxoviruses, influenza C virus (ICV) and influenza D virus (IDV) have recently been implicated to play a role in BRD. However, there are contradicting reports about the association of IDV and ICV to BRD. Using the la...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2020.08.014
更新日期:2020-12-01 00:00:00
abstract::Groundnut bud necrosis virus induces necrotic symptoms in different hosts. Previous studies showed reactive oxygen species-mediated programmed cell death (PCD) resulted in necrotic symptoms. Transgenic expression of viral protein NSs mimics viral symptoms. Here, we showed a role for NSs in influencing oxidative burst ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2017.05.003
更新日期:2017-08-01 00:00:00
abstract::This report shows that (S)CARNA 5, the satellite of cucumber mosaic virus (CMV) strain S, directs the synthesis of two small proteins in a wheat germ cell-free translation system. The two proteins are produced by the translation of both (S)CARNA 5 purified from CMV virions and the (+) strand purified from double-stran...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(86)90147-9
更新日期:1986-07-30 00:00:00
abstract::We previously demonstrated that human parainfluenza virus type 2 (hPIV-2) induces RhoA activation, which promotes its growth. RhoA controls the equilibrium between globular and filamentous actin (F-actin). We found that F-actin formation is induced by wild type (wt) hPIV-2 infection, and that inhibition of F-actin for...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2018.08.015
更新日期:2018-11-01 00:00:00
abstract::The function of a substantial percentage of the putative protein-coding open reading frames (ORFs) in viral genomes is unknown. As their sequence is not similar to that of proteins of known function, the function of these ORFs cannot be assigned on the basis of sequence similarity. Methods complement or in combination...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2004.10.020
更新日期:2005-01-05 00:00:00
abstract::Central African tropical forests are home to several species of non-human primates (NHPs), infected by Simian Immunodeficiency Virus (SIV). It is well-known that HIV-1 epidemic is due to cross-transmission and adaptation of SIV to humans. The main goal of this work was to investigate if a NHP bite is a risk factor for...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2016.12.026
更新日期:2017-03-01 00:00:00
abstract::The genome of the Chilo iridescent virus (CIV) was analyzed for existence of repetitive DNA sequences by DNA-DNA hybridization using a defined and complete gene library of the viral genome (209 kbp) and by heteroduplex mapping. These experiments revealed the presence of repetitive DNA elements in the CIV genome, which...
journal_title:Virology
pub_type: 杂志文章
doi:
更新日期:1988-12-01 00:00:00
abstract::We have previously reported that a virus, MH2-PA200, lacking the ability to transform quail embryo cells, could be isolated from wild type (wt) MH2 stocks passaged on chicken neuroretina cells. We report here the molecular cloning and extensive characterization of this MH2-PA200 provirus. Molecularly cloned MH2-PA200 ...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(86)90030-9
更新日期:1986-09-01 00:00:00
abstract::Antigenic sites on the G1 glycoprotein of La Crosse bunyavirus were defined by constructing a panel of neutralizing and nonneutralizing monoclonal antibodies (F. Gonzalez-Scarano, R. E. Shope, C. H. Calisher, and N. Nathanson (1982), Virology 120, 42-53). To analyze the relationship between the individual epitopes del...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(85)90283-1
更新日期:1985-07-30 00:00:00
abstract::An immunodominant region of VP3, one of the two structural proteins of infectious bursal disease virus (IBDV strain 002-73), has been mapped by restriction site-specific deletion analysis and subcloning in Escherichia coli, followed by immunoblot analysis of the synthesized products. The epitope located within 58 amin...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/0042-6822(91)90457-m
更新日期:1991-10-01 00:00:00
abstract::Human adenovirus type 3 (HAdV-B3) has an apparently stable genome yet remains a major circulating and problematic respiratory pathogen. Comparisons of the prototype genome to genomes from three current field strains, including two isolated from epidemics, and a laboratory strain, yielded small-scale nucleotide variati...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2009.10.052
更新日期:2010-02-05 00:00:00
abstract::It is unresolved whether recently transmitted human immunodeficiency viruses (HIV) have genetic features that specifically favour their transmissibility. To identify potential "transmission signatures", we compared 20 full-length HIV-1 subtype C genomes from primary infections, with 66 sampled from ethnically and geog...
journal_title:Virology
pub_type: 杂志文章
doi:10.1016/j.virol.2009.10.002
更新日期:2010-01-20 00:00:00