A conformational switch in human immunodeficiency virus gp41 revealed by the structures of overlapping epitopes recognized by neutralizing antibodies.

abstract：:Cyclosporine (CsA) and its derivatives potently suppress hepatitis C virus (HCV) replication. Recently, CsA-resistant HCV replicons have been identified in vitro. We examined the dependence of the wild-type and CsA-resistant replicons on various cyclophilins for replication. A strong correlation between CsA resistance...

journal_title：Journal of virology

authors： Yang F,Robotham JM,Nelson HB,Irsigler A,Kenworthy R,Tang H

更新日期：2008-06-01 00:00:00

abstract：:The human cytomegalovirus (HCMV) tegument protein pp71, encoded by gene UL82, stimulates viral immediate-early (IE) transcription. pp71 interacts with the cellular protein hDaxx at nuclear domain 10 (ND10) sites, resulting in the reversal of hDaxx-mediated repression of viral transcription. We demonstrate that pp71 di...

journal_title：Journal of virology

authors： Lukashchuk V,McFarlane S,Everett RD,Preston CM

更新日期：2008-12-01 00:00:00

abstract：:In vitro transcription of the avian tumor virus RNA by RNA-directed DNA polymerase is initiated on the unique cellular 4S RNA. Previous studies have shown that on the average there is one such RNA primer hydrogen bonded to each viral 35S RNA. The present study confirms that finding and demonstrates that, at least for ...

journal_title：Journal of virology

authors： Taylor JM,Illmensee R

更新日期：1975-09-01 00:00:00

abstract：:Adult T-cell leukemia (ATL) occurs in a small population of human T-cell leukemia virus type 1 (HTLV-1)-infected individuals. Although the critical risk factor for ATL development is not clear, it has been noted that ATL is incidentally associated with mother-to-child infection, elevated proviral loads, and weakness i...

journal_title：Journal of virology

authors： Hasegawa A,Ohashi T,Hanabuchi S,Kato H,Takemura F,Masuda T,Kannagi M

更新日期：2003-03-01 00:00:00

abstract：:Human T-cell leukemia virus type 1 (HTLV-1) is the causative agent of adult T-cell leukemia (ATL) and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). The HTLV-1 genome encodes the Tax protein that plays essential regulatory roles in HTLV-1 replication and oncogenic transformation of T lymphocytes....

journal_title：Journal of virology

authors： Gao L,Harhaj EW

更新日期：2013-12-01 00:00:00

abstract：:The epithelium plays a key role in the spread of Lassa virus. Transmission from rodents to humans occurs mainly via inhalation or ingestion of droplets, dust, or food contaminated with rodent urine. Here, we investigated Lassa virus infection in cultured epithelial cells and subsequent release of progeny viruses. We s...

journal_title：Journal of virology

authors： Schlie K,Maisa A,Freiberg F,Groseth A,Strecker T,Garten W

更新日期：2010-04-01 00:00:00

abstract：:Several groups have reported that certain herpesvirus envelope proteins do not remain on the surface of cells that express them but rather are internalized by endocytosis in a recycling process. The biological function of membrane protein endocytosis in the virus life cycle remains a matter of speculation and debate. ...

journal_title：Journal of virology

authors： Tirabassi RS,Enquist LW

更新日期：1998-06-01 00:00:00

abstract：:Mutants of polyomavirus with altered host specificities were isolated in undifferentiated C2 myoblast cells (L. Ricci, R. Maione, C. Passananti, A. Felsani, and P. Amati, J. Virol. 66:7153-7158, 1992). The mutations responsible for this phenotype belonged to either of the two classes: a large duplication of the enhanc...

journal_title：Journal of virology

authors： Mezes B,Amati P

更新日期：1994-02-01 00:00:00

abstract：:In gene therapy, the innate immune system is a significant barrier to the effective application of adenovirus (Ad) vectors. In kidney epithelium-derived (REC) cells, serotype 5 Ad vectors induce the expression of the chemokine CXCL10 (IP-10), a response that is dependent on NFkappaB. Compared to the parental vector Ad...

journal_title：Journal of virology

authors： Liu Q,White LR,Clark SA,Heffner DJ,Winston BW,Tibbles LA,Muruve DA

更新日期：2005-12-01 00:00:00

abstract：:Most strains of human immunodeficiency virus type 1 (HIV-1) which have only been carried in vitro in peripheral blood mononuclear cells (primary isolates) can be neutralized by antibodies, but their sensitivity to neutralization varies considerably. To study the parameters that contribute to the differential neutraliz...

journal_title：Journal of virology

authors： Cecilia D,KewalRamani VN,O'Leary J,Volsky B,Nyambi P,Burda S,Xu S,Littman DR,Zolla-Pazner S

更新日期：1998-09-01 00:00:00

abstract：:Recombinant interleukin-16 (rIL-16) has been found to inhibit human immunodeficiency virus type 1 (HIV-1) replication in acutely or endogenously infected CD4(+) T cells. However, the effect of rIL-16 on HIV-1 replication in antigen-presenting cells (APCs) is still unknown. We show here a potent HIV-suppressive activit...

journal_title：Journal of virology

authors： Truong MJ,Darcissac EC,Hermann E,Dewulf J,Capron A,Bahr GM

更新日期：1999-08-01 00:00:00

abstract：:Apoptosis of virus-infected cells occurs either as a direct response to viral infection or upon recognition of infection by the host immune response. Apoptosis reduces production of new virus from these cells, and therefore viruses have evolved inhibitory mechanisms. We previously showed that laboratory strains of her...

journal_title：Journal of virology

authors： Jerome KR,Fox R,Chen Z,Sears AE,Lee Hy,Corey L

更新日期：1999-11-01 00:00:00

abstract：:The Epstein-Barr virus BZLF1 gene product ZEBRA is a DNA-binding protein that is partially homologous to c-Fos, binds specifically to AP-1 sites, and can induce the lytic cycle in latently infected B lymphocytes. Induction of the viral lytic cycle can also be achieved by treatment with the phorbol ester 12-O-tetrade-c...

journal_title：Journal of virology

authors： Flemington E,Speck SH

更新日期：1990-09-01 00:00:00

abstract：:Prior studies demonstrated that immunization of macaques with simian immunodeficiency virus (SIV) Gag-Pol and Env recombinants of the attenuated poxvirus modified vaccinia virus Ankara (MVA) provided protection from high levels of viremia and AIDS following challenge with a pathogenic strain of SIV (V. M. Hirsch et al...

journal_title：Journal of virology

authors： Ourmanov I,Brown CR,Moss B,Carroll M,Wyatt L,Pletneva L,Goldstein S,Venzon D,Hirsch VM

更新日期：2000-03-01 00:00:00

abstract：:We have previously shown that delivery of the porcine type I interferon gene (poIFN-α/β) with a replication-defective human adenovirus vector (adenovirus 5 [Ad5]) can sterilely protect swine challenged with foot-and-mouth disease virus (FMDV) 1 day later. However, the need of relatively high doses of Ad5 limits the ap...

journal_title：Journal of virology

authors： Diaz-San Segundo F,Dias CC,Moraes MP,Weiss M,Perez-Martin E,Owens G,Custer M,Kamrud K,de los Santos T,Grubman MJ

更新日期：2013-05-01 00:00:00

abstract：:Epstein-Barr virus (EBV) in vivo is known to establish persistent infection in resting, circulating memory B cells and to productively replicate in plasma cells. Until now, the molecular mechanism of how EBV switches from latency to lytic replication in vivo was not known. Here, we report that the plasma cell differen...

journal_title：Journal of virology

authors： Sun CC,Thorley-Lawson DA

更新日期：2007-12-01 00:00:00

abstract：:Enzymatic markers and electron microscopy were utilized to determine the cellular origin of the membrane types isolated from type 2 dengue virus-infected BHK cells by discontinuous sucrose gradient centrifugation. The results showed an apparent separation of plasma membrane, smooth and rough endoplasmic reticulum with...

journal_title：Journal of virology

authors： Stohlman SA,Wisseman CL Jr,Eylar OR,Silverman DJ

更新日期：1975-10-01 00:00:00

abstract：UNLABELLED:There are nine subtypes of influenza A virus neuraminidase (NA), N1 to N9. In addition, influenza B virus also contains NA, and there are two influenza virus NA-like molecules, N10 and N11, which were recently identified from bats. Crystal structures for all of these proteins have been solved, with the excep...

journal_title：Journal of virology

authors： Sun X,Li Q,Wu Y,Wang M,Liu Y,Qi J,Vavricka CJ,Gao GF

更新日期：2014-08-01 00:00:00

abstract：:Highly conserved amino acids in the second helix structure of the human immunodeficiency virus type 1 (HIV-1) MA protein were identified to be critical for the incorporation of viral Env proteins into HIV-1 virions from transfected COS-7 cells. The effects of these MA mutations on viral replication in the HIV-1 natura...

journal_title：Journal of virology

authors： Lee YM,Tang XB,Cimakasky LM,Hildreth JE,Yu XF

更新日期：1997-02-01 00:00:00

abstract：:Endogenous retroviruses (ERV) are found throughout vertebrate genomes, and failure to silence their activation can have deleterious consequences on the host. Mutation and subsequent disruption of ERV loci is therefore an indispensable component of the cell-intrinsic defenses that maintain the integrity of the host gen...

journal_title：Journal of virology

authors： Treger RS,Tokuyama M,Dong H,Salas-Briceno K,Ross SR,Kong Y,Iwasaki A

更新日期：2019-09-30 00:00:00

abstract：:Effective, vaccine-induced CD8+ T-cell responses should recognize infected cells early enough to prevent production of progeny virions. We have recently shown that Gag-specific CD8+ T cells recognize simian immunodeficiency virus-infected cells at 2 h postinfection, whereas Env-specific CD8+ T cells do not recognize i...

journal_title：Journal of virology

authors： Sacha JB,Chung C,Reed J,Jonas AK,Bean AT,Spencer SP,Lee W,Vojnov L,Rudersdorf R,Friedrich TC,Wilson NA,Lifson JD,Watkins DI

更新日期：2007-11-01 00:00:00

abstract：:The amino-terminal region of the Vif molecule in human immunodeficiency virus type 1 (HIV-1), HIV-2, and simian immunodeficiency virus (SIV) contains a conserved SLV/Ix4Yx9Y motif that was first described in 1992, but the importance of this motif for Vif function has not yet been examined. Our characterization of the ...

journal_title：Journal of virology

authors： Chen G,He Z,Wang T,Xu R,Yu XF

更新日期：2009-09-01 00:00:00

abstract：:Protein P4, an early protein of double-stranded RNA bacteriophage phi 6, is a component of the virion-associated RNA polymerase complex and possesses a nucleoside triphosphate (NTP) phosphohydrolase activity. We have produced and characterized a panel of 20 P4-specific monoclonal antibodies. Epitope mapping using trun...

journal_title：Journal of virology

authors： Ojala PM,Juuti JT,Bamford DH

更新日期：1993-05-01 00:00:00

abstract：:Early stages of infection by the mouse polyomavirus have been studied using HeLa cells stably expressing small interfering RNA to protein disulfide isomerase (PDI). Infectibility measured by nuclear T antigen expression was reduced commensurately with the degree of PDI downregulation. Infectibility was restored by tra...

journal_title：Journal of virology

authors： Gilbert J,Ou W,Silver J,Benjamin T

更新日期：2006-11-01 00:00:00

abstract：:HB-3, a temperate bacteriophage of Streptococcus pneumoniae, synthesizes its own murein hydrolase activity when multiplying on cultures of pneumococcus. The enzyme (HBL) was purified and biochemically characterized as an N-acetylmuramoyl-L-alanine amidase of 36,000 daltons, and a 2.1-kilobase DraI fragment containing ...

journal_title：Journal of virology

authors： Romero A,Lopez R,Garcia P

更新日期：1990-01-01 00:00:00

abstract：:Clink, a 20-kDa protein of faba bean necrotic yellows virus, a single-stranded DNA plant virus, interacts with pRB family members and a SKP1 homologue from Medicago sativa. An LxCxE motif and an F-box of Clink mediate the interactions with the respective proteins. The capacity of Clink to bind pRB correlates with its ...

journal_title：Journal of virology

authors： Aronson MN,Meyer AD,Györgyey J,Katul L,Vetten HJ,Gronenborn B,Timchenko T

更新日期：2000-04-01 00:00:00

abstract：:The major capsid protein of polyomavirus, VP1, was separated into at least four subspecies by isoelectric focusing. One of these subspecies was selectively extracted from purified virions by mild treatment with sodium dodecyl sulfate, leaving a 140S particle enriched in the other three forms. The two most acidic subsp...

journal_title：Journal of virology

authors： Garcea RL,Ballmer-Hofer K,Benjamin TL

更新日期：1985-05-01 00:00:00

abstract：:Co-infection of neonatal BALB/c mice with Friend virus (FV) complex (containing defective spleen focus-forming virus [SFFV] and endogenous N-tropic leukemia-inducing helper virus [LLV-F]) and B-tropic Tennant leukemia virus (TenLV) resulted in the inhibition of LLV-F by the Fv-1(b) gene and recovery of a TenLV pseudot...

journal_title：Journal of virology

authors： Eckner RJ

更新日期：1973-09-01 00:00:00

abstract：:The roles of intracellular naked (INV), cell-associated enveloped (CEV), and extracellular enveloped (EEV) forms of vaccinia virus in cell-to-cell and longer-range spread were investigated by using two closely related strains of vaccinia virus, WR and IHD-J. We confirmed previous results that WR and IHD-J produced sim...

journal_title：Journal of virology

authors： Blasco R,Moss B

更新日期：1992-07-01 00:00:00

abstract：:RNA recombination is a major process in promoting rapid virus evolution in an infected host. A previous genome-wide screen with the yeast single-gene deletion library of 4,848 strains, representing approximately 80% of all genes of yeast, led to the identification of 11 host genes affecting RNA recombination in Tomato...

journal_title：Journal of virology

authors： Serviene E,Jiang Y,Cheng CP,Baker J,Nagy PD

更新日期：2006-02-01 00:00:00