Abstract:
:Double-stranded RNA viruses infecting bacterial hosts belong to the Cystoviridae family. Bacteriophage phi6 is one of the best characterized dsRNA viruses and shares structural as well as functional similarities with other well-studied eukaryotic dsRNA viruses (e.g. L-A, rotavirus, bluetongue virus, and reovirus). The assembly pathway of the enveloped, triple-layered phi6 virion has been well documented and can be divided into four distinct steps which are (1) procapsid formation, (2) genome encapsidation and replication, (3) nucleocapsid surface shell assembly, and (4) envelope formation. In this review, we focus primarily on the procapsid and nucleocapsid assembly for which in vitro systems have been established. The in vitro assembly systems have been instrumental in revealing assembly intermediates and conformational changes that are common to phi6 and phi8, two cystoviruses with negligible sequence homology. Two viral enzymes, the packaging NTPase (P4) and the RNA-dependent RNA polymerase (P2), were found essential for the nucleation step. The nucleation complex contains one or more tetramers of the major procapsid protein (P1) and is further stabilized by protein P4. Interaction of P1 and P4 during assembly is accompanied by an additional folding of their respective polypeptide chains. The in vitro assembled procapsids were shown to selectively package and replicate the genomic ssRNA. Furthermore, in vitro assembly of infectious nucleocapsids has been achieved in the case of phi6. The in vitro studies indicate that the nucleocapsid coat protein (P8) assembles around the polymerase complex in a template-assisted manner. Implications for the assembly of other dsRNA viruses are also presented.
journal_name
Virus Resjournal_title
Virus researchauthors
Poranen MM,Tuma Rdoi
10.1016/j.virusres.2003.12.009subject
Has Abstractpub_date
2004-04-01 00:00:00pages
93-100issue
1eissn
0168-1702issn
1872-7492pii
S0168170203003745journal_volume
101pub_type
杂志文章,评审相关文献
VIRUS RESEARCH文献大全abstract::In order to investigate the functional properties of the UL56 gene of herpes simplex virus type 1 (HSV-1), it was necessary to express the UL56 protein in vitro. The DNA sequences corresponding to the open reading frame of the UL56 gene of HSV-1 strain F were amplified from genomic viral DNA by PCR using primers corre...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/0168-1702(94)90017-5
更新日期:1994-07-01 00:00:00
abstract::The sequence of the 3' 1462nts of RNA-1 of a UK isolate of the fungal-transmitted virus barley mild mosaic (BaMMV) has been determined. An open reading frame encoding the coat protein gene was identified within this region using amino acid sequence information obtained by cyanogen bromide cleavage of virus particles. ...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/0168-1702(93)90114-3
更新日期:1993-01-01 00:00:00
abstract::Prior studies on PRRSV strain VR-2332 non-structural protein 2 (nsp2) had shown that as much as 403 amino acids could be removed from the hypervariable region without losing virus viability in vitro. We utilized selected nsp2 deletion mutants to examine in vivo growth. Young swine (4 pigs/group; 5 control swine) were ...
journal_title:Virus research
pub_type: 杂志文章,评审
doi:10.1016/j.virusres.2010.07.024
更新日期:2010-12-01 00:00:00
abstract::A transmissible disease of the plant pathogenic fungus Helminthosporium victoriae, the causal agent of Victoria blight of oats, was reported more than 50 years ago. Diseased, but not normal, isolates, of H. victoriae contain two distinct viruses designated according to their sedimentation values as victorivirus Helmin...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2015.12.011
更新日期:2016-02-02 00:00:00
abstract::Raccoons (Procyon lotor), which are not native to Japan, have been suspected to transmit various pathogens by frequent intrusion into agricultural and residential areas. To determine influenza A virus seropositivity in raccoons in Japan, we examined a total of 634 raccoons captured in 19 towns (A-S) from 2009 to 2012....
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2014.05.004
更新日期:2014-08-30 00:00:00
abstract::The interaction of human adenovirus type 12 (Ad12) with Syrian hamster cells is remarkable in that there is a block of viral DNA replication and late gene transcription. We have screened several cellular factors known to play a role in adenovirus replication for their possible contributions to the interactions of Ad12...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/s0168-1702(01)00242-8
更新日期:2001-12-04 00:00:00
abstract::The full genomic nucleotide sequence of a previously identified genotype 3 hepatitis E virus (HEV), strain SAAS-JDY5, was obtained using RT-PCR and rapid amplification of cDNA ends (RACE). The genome consisted of 7225 nucleotides, excluding a poly-A tail at the 3' terminus, and contained three open reading frames (ORF...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2009.04.009
更新日期:2009-09-01 00:00:00
abstract::The DNA polymerase from Anticarsia gemmatalis nucleopolyhedrovirus (AgMNPV) was identified and sequenced, and its amino acid sequence was compared with other viral DNA polymerases to identify conserved regions and to reconstruct a phylogenetic tree. The sequence analysis of the AgMNPV DNA polymerase gene revealed the ...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2005.01.010
更新日期:2005-06-01 00:00:00
abstract::Transplacental viral infections are dependent upon complex interactions between feto-placental and maternal immune responses and the stage of fetal development at which the infection occurs. Bovine viral diarrhea virus (BVDV) has the ability to cross the placenta and infect the fetus. Infection early in gestation with...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2012.05.018
更新日期:2012-08-01 00:00:00
abstract::The main cellular target for African swine fever virus (ASFV) is the porcine macrophage. However, existing data about the early phases of infection were previously characterized in non-leukocyte cells such as Vero cells. Here, we report that ASFV enters the natural host cell using dynamin-dependent and clathrin-mediat...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2015.01.022
更新日期:2015-03-16 00:00:00
abstract::African swine fever virus induces in Vero cells 81 acid and 14 basic polypeptides which account for most of the information content of the virus DNA. The kinetics and the cytosine arabinoside sensitivity of the synthesis of the virus-induced polypeptides showed the existence of three classes of proteins, two early and...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/0168-1702(86)90031-6
更新日期:1986-09-01 00:00:00
abstract::The recent discovery of a wide range of henipavirus-like viruses circulating in Megabats in Africa raises the question as to the zoonotic potential of these pathogens given the high human mortality rates seen with their pathogenic relatives Nipah virus and Hendra virus. In the absence of cultured infectious African He...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2014.01.003
更新日期:2014-03-06 00:00:00
abstract::The uptake of porcine parvovirus (PPV) into host cells, permissive or nonpermissive for PPV replication, was monitored by autoradiography, immunofluorescent microscopy, and dual parameter flow cytometry. While both permissive and nonpermissive cells selectively took up the light (activated) form of the virus from a mi...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/0168-1702(88)90054-8
更新日期:1988-04-01 00:00:00
abstract::The mechanism by which hepatitis B virus (HBV) infection causes severe inflammatory liver diseases is multifactorial and related to interactions with cell signaling pathways and the ensuing inflammatory response. Activation of JAK/STAT/SOCS signaling is essential for the induction of cellular antiviral responses, cont...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2009.12.003
更新日期:2010-03-01 00:00:00
abstract::A study of the evolutionary relationships of GLRaV-4,-5,-6 and -9, and two new Ampelovirus isolates (GLRaV-Pr and -De) related to grapevine leafroll disease was conducted based on molecular variability, positive selection analysis and maximum likelihood phylogenetic reconstructions. Sequences corresponding to the N-te...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2008.02.015
更新日期:2008-07-01 00:00:00
abstract::RNA-2 P75 open reading frame sequencing was conducted on BNYVV-infected sugar beet plants originating from 10 Belgian sources and was compared with sequences originating from France, Kazakhstan, Japan and China. This allowed the characterization of types A and B in Belgium. Sequence analysis confirmed that type A is i...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2004.07.007
更新日期:2005-03-01 00:00:00
abstract::The highly heterogeneous porcine reproductive and respiratory syndrome virus (PRRSV) is the causative agent responsible for an economically important pig disease with the characteristic symptoms of reproductive losses in breeding sows and respiratory illnesses in young piglets. The virus can be broadly divided into th...
journal_title:Virus research
pub_type: 杂志文章,评审
doi:10.1016/j.virusres.2014.10.004
更新日期:2014-12-19 00:00:00
abstract::Recent reports indicated presence of two antigenic and genetic groups (genotypes VI and VII) of foot-and-mouth disease virus (FMDV) type A in India and are divergent from the vaccine strains. In order to choose suitable field isolate as candidate vaccine strain, anti-sera against representative isolates from both the ...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2005.03.021
更新日期:2005-09-01 00:00:00
abstract::Studies on the Marek's disease virus (MDV) serotype 2 (MDV2) genome may be important for understanding the naturally nononcogenic nature of the virus. To determine the complete DNA sequence of MDV2 unique short (Us) region, genomic BamHI fragments F, M1 and R were sequenced. The MDV2 Us region is 12109 bp long and con...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/s0168-1702(98)00110-5
更新日期:1998-11-01 00:00:00
abstract::Primers corresponding to conserved regions in the RNA-dependent RNA polymerase and the RACE procedure led to the cloning of the complete sweetpotato mild mottle virus (SPMMV) RNA genome. The assembled SPMMV genomic sequence was 10,818 nucleotides in length with a polyadenylated tract at the 3' terminus. The structure ...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/s0168-1702(97)00148-2
更新日期:1998-02-01 00:00:00
abstract::Hepatitis delta virus (HDV) requires the surface antigens of hepatitis B virus (HBV) for packaging and transmission, but replicates its RNA in an HBV-independent fashion. HDV contains a 1.7-kb circular RNA genome that is folded into an unbranched rod-like structure via intramolecular base-pairing, and possesses ribozy...
journal_title:Virus research
pub_type: 杂志文章,评审
doi:10.1016/j.virusres.2007.01.003
更新日期:2007-08-01 00:00:00
abstract::Our understanding of picornavirus RNA replication has improved over the past 10 years, due in large part to the discovery of cis-active RNA elements (CREs) within picornavirus RNA genomes. CREs function as templates for the conversion of VPg, the Viral Protein of the genome, into VPgpUpU(OH). These so called CREs are ...
journal_title:Virus research
pub_type: 杂志文章,评审
doi:10.1016/j.virusres.2008.07.027
更新日期:2009-02-01 00:00:00
abstract::Broad and potent human monoclonal neutralizing antibodies have considerable potential in the prevention and treatment of acquired immunodeficiency syndrome (AIDS). To identify the key amino acid recognition site contacted with neutralizing antibody Y498, peptides were panned from the PhD-12 peptide library and predict...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2020.198001
更新日期:2020-08-01 00:00:00
abstract::All lepidopteran baculovirus genomes sequenced to date encode a viral fibroblast growth factor homolog (vFGF). Recently, we generated a Bombyx mori nucleopolyhedrovirus (BmNPV) mutant lacking functional vfgf and found that BmNPV vfgf contributes to virus virulence in B. mori larvae. However, the steps at which BmNPV v...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2008.06.002
更新日期:2008-10-01 00:00:00
abstract::Variants assigned to GI-23 lineage of infectious bronchitis virus (IBV), formerly called Var2, have circulated for nearly 20 years only in countries of the Middle East. Strains of this lineage were first identified in Israel in 1998. More severe form of the virus appeared in 2006, when the second wave of Var2 epidemic...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2017.09.010
更新日期:2017-10-15 00:00:00
abstract::Ranaviruses (family Iridoviridae, genus Ranavirus) have been recognized as emerging infectious pathogens and caused a great loss to the global biodiversity. Thymidine kinase (TK) and deoxyuridine triphosphatase (dUTPase, DUT, encoded by ORF 67R) are ubiquitous, existing in iridoviruses and other organisms. Previous st...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2016.01.008
更新日期:2016-03-02 00:00:00
abstract::Recent evidence has accumulated which definitively shows that chemokine receptors CCR5 and CXCR4 play an essential role as coreceptors for human immunodeficiency virus type 1 (HIV-1) infection. Flow cytometric analysis permitted us to detect CD38, a surface marker of early differentiation, as well as activation of T c...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/s0168-1702(00)00220-3
更新日期:2001-01-01 00:00:00
abstract::To gain more insights into the epidemiology of hantaviruses in China, the hantaviral S, M and L segment sequences were recovered from two Microtus fortis captured in Shenyang and four M. fortis trapped in Yuanjiang in China. Genetic analysis revealed that Shenyang sequences are closely related to the sequences of Fuso...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2008.06.012
更新日期:2008-10-01 00:00:00
abstract::Nearly 100 years after its discovery poliovirus remains one of most thoroughly studied and best understood virus models for the molecular virologist. While poliovirus has been of vital importance for our insight into picornavirus biology at the cellular and biochemical level, it is ironic to note that, due to the earl...
journal_title:Virus research
pub_type: 杂志文章,评审
doi:10.1016/j.virusres.2005.04.008
更新日期:2005-08-01 00:00:00
abstract:BACKGROUND AND AIM:The mechanisms of hepatocarcinogenesis induced by hepatitis C virus remain unclear. Our aim was to investigate the effect of the HCV core protein on the promoter methylation status of selected genes potentially involved in the hepatocellular carcinoma (HCC). MATERIALS AND METHODS:We evaluated the pr...
journal_title:Virus research
pub_type: 杂志文章
doi:10.1016/j.virusres.2011.05.014
更新日期:2011-09-01 00:00:00