Abstract:
:MxA is an abundant and ubiquitous cytoplasmic protein induced by alpha/beta interferon in human cells. Upon full induction, it can constitute 0.5 to 1% of cytosolic proteins. MxA can bind elements of the cytoskeleton, such as actin and tubulins, and several larger cellular proteins. However, these protein-protein interactions seem to be transitory. The human MxA protein contains a tripartite GTP-binding domain consisting of GxxxxGKS, DxxG, and TKxD, where x is any amino acid. It is shown here that the native MxA protein has GTPase activity (GTP----GDP) when purified by immunoprecipitation with affinity-purified polyclonal antibodies directed against the C-terminal domain of MxA. The GTPase activity is greatly diminished by polyclonal antibodies directed against the N-terminal domain of MxA (the domain which contains the GTP-binding consensus elements). Amino acid substitution within the GTP-binding domain abolished the GTPase activity of the mutated MxA protein expressed in transfected CHO cells. The reaction is specific for GTP, and the approximate Km is 0.1 mM. The reaction has an absolute requirement for Mg2+. The turnover number is approximately 70 molecules of GTP hydrolyzed per min per MxA molecule. It is suggested that the human MxA protein has certain characteristics of the stress proteins.
journal_name
J Viroljournal_title
Journal of virologyauthors
Horisberger MAdoi
10.1128/JVI.66.8.4705-4709.1992subject
Has Abstractpub_date
1992-08-01 00:00:00pages
4705-9issue
8eissn
0022-538Xissn
1098-5514journal_volume
66pub_type
杂志文章abstract::Treatment with sodium dodecyl sulfate (SDS) converted the vaccinia virus strain IHD-J into particles of two types: (i) ghosts which possessed a thin-membrane vesicle derived from basement part of the virus membrane with attached lateral bodies and a membranous structure derived from the core wall and (ii) aggregates o...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.50.3.929-938.1984
更新日期:1984-06-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.06711-11
更新日期:2012-05-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.25.1.60-72.1978
更新日期:1978-01-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01581-07
更新日期:2008-02-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.16.8812-8818.2003
更新日期:2003-08-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.74.20.9507-9514.2000
更新日期:2000-10-01 00:00:00
abstract::Picornaviruses are a family of positive-strand RNA viruses that are responsible for a variety of devastating human and animal diseases. An attenuated strain of mengovirus (vMC24) is serologically indistinguishable from the lethal murine wild-type mengovirus and encephalomyocarditis virus (EMCV). Immunogen-specific sti...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.69.8.4914-4923.1995
更新日期:1995-08-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02431-20
更新日期:2021-01-13 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.71.9.7132-7135.1997
更新日期:1997-09-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00237-17
更新日期:2017-05-12 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00273-06
更新日期:2006-07-01 00:00:00
abstract::Replication of the plus-stranded RNA genome of hepatitis C virus (HCV) occurs in a membrane-bound replication complex consisting of viral and cellular proteins and viral RNA. NS5B, the RNA polymerase of HCV, is anchored to the membranes via a C-terminal 20-amino-acid-long hydrophobic domain, which is flanked on each s...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02072-05
更新日期:2006-11-01 00:00:00
abstract::The effectiveness of attenuated poliovirus vaccines when given orally to induce both systemic and mucosal immune responses against poliovirus has resulted in an effort to develop poliovirus-based vectors to express foreign proteins. We have previously described the construction of poliovirus genomes (referred to as re...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.70.4.2643-2649.1996
更新日期:1996-04-01 00:00:00
abstract::Brome mosaic virus (BMV), a positive-strand RNA virus, encodes two replication proteins: the 2a protein, which contains polymerase-like sequences, and the 1a protein, with N-terminal putative capping and C-terminal helicase-like sequences. These two proteins are part of a multisubunit complex which is necessary for vi...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.9.7160-7169.1998
更新日期:1998-09-01 00:00:00
abstract::Candidate foot-and-mouth disease (FMD) DNA vaccines designed to produce viral capsids lacking infectious viral nucleic acid were evaluated. Plasmid DNAs containing a portion of the FMDV genome coding for the capsid precursor protein (P1-2A) and wild-type or mutant viral proteinase 3C (plasmids P12X3C or P12X3C-mut, re...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.5.4454-4457.1998
更新日期:1998-05-01 00:00:00
abstract::The mucosal adjuvant effect of synthetic double-stranded RNA polyriboinosinic polyribocytidylic acid [poly(I:C)] against influenza virus was examined under intranasal coadministration with inactivated hemagglutinin (HA) vaccine in BALB/c mice and was shown to have a protective effect against both nasal-restricted infe...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.79.5.2910-2919.2005
更新日期:2005-03-01 00:00:00
abstract::The parameters governing the activity of the cloned T4 gene 23, which codes for the major T4 head protein, were analyzed. Suppressor-negative bacteria carrying wild-type T4 gene 23 cloned into plasmid pCR1 or pBR322 were infected with T4 gene 23 amber phage also carrying mutations in the following genes: (i) denA and ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.39.1.46-59.1981
更新日期:1981-07-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00963-07
更新日期:2007-10-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.65.7.3530-3537.1991
更新日期:1991-07-01 00:00:00
abstract::In vitro studies have indicated that retroviral nucleocapsid (NC) protein facilitates both DNA synthesis by reverse transcriptase (RT) and annealing of the nascent DNA with acceptor template. Increasing the rate of DNA synthesis is expected to reduce the frequency of RT template switching, whereas annealing the nascen...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.15.7473-7484.2002
更新日期:2002-08-01 00:00:00
abstract::Human immunodeficiency virus type 1 (HIV-1) uses a variety of chemokine receptors as coreceptors for virus entry, and the ability of the virus to be neutralized by antibody may depend on which coreceptors are used. In particular, laboratory-adapted variants of the virus that use CXCR4 as a coreceptor are highly sensit...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.3.1886-1893.1998
更新日期:1998-03-01 00:00:00
abstract::The tempo and intensity of retroviral neuropathogenesis are dependent on the capacity of the virus to invade the central nervous system. For murine leukemia viruses, an important determinant of neuroinvasiveness is the virus-encoded protein glycosylated Gag, the function of which in the virus life cycle is not known. ...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.72.7.5619-5625.1998
更新日期:1998-07-01 00:00:00
abstract::The presence of porcine endogenous retroviruses presents a potential risk of transmission of infectious diseases (xenozoonosis) if tissues and organs from genetically modified pigs are to be used in xenotransplantation. Here, we report that intracellular expression of a llama single-domain antibody against p15, the ma...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.77.22.12132-12139.2003
更新日期:2003-11-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.76.13.6480-6486.2002
更新日期:2002-07-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00615-15
更新日期:2015-09-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
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更新日期:2006-04-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/jvi.78.1.389-398.2004
更新日期:2004-01-01 00:00:00
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journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.01769-06
更新日期:2007-03-01 00:00:00
abstract::Most poxviruses express multiple proteins containing ankyrin (ANK) repeats accounting for a large superfamily of related but unique determinants of poxviral tropism. Recently, select members of this novel family of poxvirus proteins have drawn considerable attention for their potential roles in modulating intracellula...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.00963-09
更新日期:2009-12-01 00:00:00
abstract::Coronaviruses that infect humans belong to the Alpha-coronavirus (including HCoV-229E) and Beta-coronavirus (including SARS-CoV and SARS-CoV-2) genera. In particular, SARS-CoV-2 is currently a major threat to public health worldwide. The spike (S) homotrimers bind to their receptors via the receptor-binding domain (RB...
journal_title:Journal of virology
pub_type: 杂志文章
doi:10.1128/JVI.02284-20
更新日期:2021-01-07 00:00:00