Monomeric nucleoprotein of influenza A virus.

Abstract:

:Isolated influenza A virus nucleoprotein exists in an equilibrium between monomers and trimers. Samples containing only monomers or only trimers can be stabilized by respectively low and high salt. The trimers bind RNA with high affinity but remain trimmers, whereas the monomers polymerise onto RNA forming nucleoprotein-RNA complexes. When wild type (wt) nucleoprotein is crystallized, it forms trimers, whether one starts with monomers or trimers. We therefore crystallized the obligate monomeric R416A mutant nucleoprotein and observed how the domain exchange loop that leads over to a neighbouring protomer in the trimer structure interacts with equivalent sites on the mutant monomer surface, avoiding polymerisation. The C-terminus of the monomer is bound to the side of the RNA binding surface, lowering its positive charge. Biophysical characterization of the mutant and wild type monomeric proteins gives the same results, suggesting that the exchange domain is folded in the same way for the wild type protein. In a search for how monomeric wt nucleoprotein may be stabilized in the infected cell we determined the phosphorylation sites on nucleoprotein isolated from virus particles. We found that serine 165 was phosphorylated and conserved in all influenza A and B viruses. The S165D mutant that mimics phosphorylation is monomeric and displays a lowered affinity for RNA compared with wt monomeric NP. This suggests that phosphorylation may regulate the polymerisation state and RNA binding of nucleoprotein in the infected cell. The monomer structure could be used for finding new anti influenza drugs because compounds that stabilize the monomer may slow down viral infection.

journal_name

PLoS Pathog

journal_title

PLoS pathogens

authors

Chenavas S,Estrozi LF,Slama-Schwok A,Delmas B,Di Primo C,Baudin F,Li X,Crépin T,Ruigrok RW

doi

10.1371/journal.ppat.1003275

subject

Has Abstract

pub_date

2013-03-01 00:00:00

pages

e1003275

issue

3

eissn

1553-7366

issn

1553-7374

pii

PPATHOGENS-D-12-02921

journal_volume

9

pub_type

杂志文章
  • Correction: A model of chronic, transmissible Otitis Media in mice.

    abstract::[This corrects the article DOI: 10.1371/journal.ppat.1007696.]. ...

    journal_title:PLoS pathogens

    pub_type: 已发布勘误

    doi:10.1371/journal.ppat.1007916

    authors: Dewan KK,Taylor-Mulneix DL,Campos LL,Skarlupka AL,Wagner SM,Ryman VE,Gestal MC,Ma L,Blas-Machado U,Faddis BT,Harvill ET

    更新日期:2019-06-28 00:00:00

  • The KdpD/KdpE two-component system: integrating K⁺ homeostasis and virulence.

    abstract::The two-component system (TCS) KdpD/KdpE, extensively studied for its regulatory role in potassium (K(+)) transport, has more recently been identified as an adaptive regulator involved in the virulence and intracellular survival of pathogenic bacteria, including Staphylococcus aureus, entero-haemorrhagic Escherichia c...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1003201

    authors: Freeman ZN,Dorus S,Waterfield NR

    更新日期:2013-03-01 00:00:00

  • Type VI Secretion System Toxins Horizontally Shared between Marine Bacteria.

    abstract::The type VI secretion system (T6SS) is a widespread protein secretion apparatus used by Gram-negative bacteria to deliver toxic effector proteins into adjacent bacterial or host cells. Here, we uncovered a role in interbacterial competition for the two T6SSs encoded by the marine pathogen Vibrio alginolyticus. Using c...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1005128

    authors: Salomon D,Klimko JA,Trudgian DC,Kinch LN,Grishin NV,Mirzaei H,Orth K

    更新日期:2015-08-25 00:00:00

  • Acute Infectious Gastroenteritis Potentiates a Crohn's Disease Pathobiont to Fuel Ongoing Inflammation in the Post-Infectious Period.

    abstract::Crohn's disease (CD) is a chronic inflammatory condition of diverse etiology. Exposure to foodborne pathogens causing acute gastroenteritis produces a long-term risk of CD well into the post-infectious period but the mechanistic basis for this ongoing relationship to disease onset is unknown. We developed two novel mo...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1005907

    authors: Small CL,Xing L,McPhee JB,Law HT,Coombes BK

    更新日期:2016-10-06 00:00:00

  • Viral CTL escape mutants are generated in lymph nodes and subsequently become fixed in plasma and rectal mucosa during acute SIV infection of macaques.

    abstract::SIV(mac239) infection of rhesus macaques (RMs) results in AIDS despite the generation of a strong antiviral cytotoxic T lymphocyte (CTL) response, possibly due to the emergence of viral escape mutants that prevent recognition of infected cells by CTLs. To determine the anatomic origin of these SIV mutants, we longitud...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1002048

    authors: Vanderford TH,Bleckwehl C,Engram JC,Dunham RM,Klatt NR,Feinberg MB,Garber DA,Betts MR,Silvestri G

    更新日期:2011-05-01 00:00:00

  • Molecular basis of dengue virus serotype 2 morphological switch from 29°C to 37°C.

    abstract::The ability of DENV2 to display different morphologies (hence different antigenic properties) complicates vaccine and therapeutics development. Previous studies showed most strains of laboratory adapted DENV2 particles changed from smooth to "bumpy" surfaced morphology when the temperature is switched from 29°C at 37°...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1007996

    authors: Lim XN,Shan C,Marzinek JK,Dong H,Ng TS,Ooi JSG,Fibriansah G,Wang J,Verma CS,Bond PJ,Shi PY,Lok SM

    更新日期:2019-09-19 00:00:00

  • Experimental Cerebral Malaria Spreads along the Rostral Migratory Stream.

    abstract::It is poorly understood how progressive brain swelling in experimental cerebral malaria (ECM) evolves in space and over time, and whether mechanisms of inflammation or microvascular sequestration/obstruction dominate the underlying pathophysiology. We therefore monitored in the Plasmodium berghei ANKA-C57BL/6 murine E...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1005470

    authors: Hoffmann A,Pfeil J,Alfonso J,Kurz FT,Sahm F,Heiland S,Monyer H,Bendszus M,Mueller AK,Helluy X,Pham M

    更新日期:2016-03-10 00:00:00

  • A critical role for CD8 T cells in a nonhuman primate model of tuberculosis.

    abstract::The role of CD8 T cells in anti-tuberculosis immunity in humans remains unknown, and studies of CD8 T cell-mediated protection against tuberculosis in mice have yielded controversial results. Unlike mice, humans and nonhuman primates share a number of important features of the immune system that relate directly to the...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1000392

    authors: Chen CY,Huang D,Wang RC,Shen L,Zeng G,Yao S,Shen Y,Halliday L,Fortman J,McAllister M,Estep J,Hunt R,Vasconcelos D,Du G,Porcelli SA,Larsen MH,Jacobs WR Jr,Haynes BF,Letvin NL,Chen ZW

    更新日期:2009-04-01 00:00:00

  • Correction: A Human Trypanosome Suppresses CD8+ T Cell Priming by Dendritic Cells through the Induction of Immune Regulatory CD4+ Foxp3+ T Cells.

    abstract::[This corrects the article DOI: 10.1371/journal.ppat.1005698.]. ...

    journal_title:PLoS pathogens

    pub_type: 已发布勘误

    doi:10.1371/journal.ppat.1005771

    authors: Ersching J,Basso AS,Calich VL,Bortoluci KR,Rodrigues MM

    更新日期:2016-07-11 00:00:00

  • Phosphorylation at the homotypic interface regulates nucleoprotein oligomerization and assembly of the influenza virus replication machinery.

    abstract::Negative-sense RNA viruses assemble large ribonucleoprotein (RNP) complexes that direct replication and transcription of the viral genome. Influenza virus RNPs contain the polymerase, genomic RNA and multiple copies of nucleoprotein (NP). During RNP assembly, monomeric NP oligomerizes along the length of the genomic R...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1004826

    authors: Mondal A,Potts GK,Dawson AR,Coon JJ,Mehle A

    更新日期:2015-04-13 00:00:00

  • Cross-serotype immunity induced by immunization with a conserved rhinovirus capsid protein.

    abstract::Human rhinovirus (RV) infections are the principle cause of common colds and precipitate asthma and COPD exacerbations. There is currently no RV vaccine, largely due to the existence of ∼150 strains. We aimed to define highly conserved areas of the RV proteome and test their usefulness as candidate antigens for a broa...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1003669

    authors: Glanville N,McLean GR,Guy B,Lecouturier V,Berry C,Girerd Y,Gregoire C,Walton RP,Pearson RM,Kebadze T,Burdin N,Bartlett NW,Almond JW,Johnston SL

    更新日期:2013-01-01 00:00:00

  • TGF-beta signaling controls embryo development in the parasitic flatworm Schistosoma mansoni.

    abstract::Over 200 million people have, and another 600 million are at risk of contracting, schistosomiasis, one of the major neglected tropical diseases. Transmission of this infection, which is caused by helminth parasites of the genus Schistosoma, depends upon the release of parasite eggs from the human host. However, approx...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.0030052

    authors: Freitas TC,Jung E,Pearce EJ

    更新日期:2007-04-01 00:00:00

  • A high-throughput genetic screen identifies previously uncharacterized Borrelia burgdorferi genes important for resistance against reactive oxygen and nitrogen species.

    abstract::Borrelia burgdorferi, the causative agent of Lyme disease in humans, is exposed to reactive oxygen and nitrogen species (ROS and RNS) in both the tick vector and vertebrate reservoir hosts. B. burgdorferi contains a limited repertoire of canonical oxidative stress response genes, suggesting that novel gene functions m...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1006225

    authors: Ramsey ME,Hyde JA,Medina-Perez DN,Lin T,Gao L,Lundt ME,Li X,Norris SJ,Skare JT,Hu LT

    更新日期:2017-02-17 00:00:00

  • Sensing of immature particles produced by dengue virus infected cells induces an antiviral response by plasmacytoid dendritic cells.

    abstract::Dengue virus (DENV) is the leading cause of mosquito-borne viral illness and death in humans. Like many viruses, DENV has evolved potent mechanisms that abolish the antiviral response within infected cells. Nevertheless, several in vivo studies have demonstrated a key role of the innate immune response in controlling ...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1004434

    authors: Décembre E,Assil S,Hillaire ML,Dejnirattisai W,Mongkolsapaya J,Screaton GR,Davidson AD,Dreux M

    更新日期:2014-10-23 00:00:00

  • Molecular phylodynamics of the heterosexual HIV epidemic in the United Kingdom.

    abstract::The heterosexual risk group has become the largest HIV infected group in the United Kingdom during the last 10 years, but little is known of the network structure and dynamics of viral transmission in this group. The overwhelming majority of UK heterosexual infections are of non-B HIV subtypes, indicating viruses orig...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1000590

    authors: Hughes GJ,Fearnhill E,Dunn D,Lycett SJ,Rambaut A,Leigh Brown AJ,UK HIV Drug Resistance Collaboration.

    更新日期:2009-09-01 00:00:00

  • RIG-I-like receptor activation drives type I IFN and antiviral signaling to limit Hantaan orthohantavirus replication.

    abstract::Pathogenic hantaviruses, genus Orthohantaviridae, are maintained in rodent reservoirs with zoonotic transmission to humans occurring through inhalation of rodent excreta. Hantavirus disease in humans is characterized by localized vascular leakage and elevated levels of circulating proinflammatory cytokines. Despite th...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1008483

    authors: Kell AM,Hemann EA,Turnbull JB,Gale M Jr

    更新日期:2020-04-24 00:00:00

  • The Activation of Phytophthora Effector Avr3b by Plant Cyclophilin is Required for the Nudix Hydrolase Activity of Avr3b.

    abstract::Plant pathogens secrete an arsenal of effector proteins to impair host immunity. Some effectors possess enzymatic activities that can modify their host targets. Previously, we demonstrated that a Phytophthora sojae RXLR effector Avr3b acts as a Nudix hydrolase when expressed in planta; and this enzymatic activity is r...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1005139

    authors: Kong G,Zhao Y,Jing M,Huang J,Yang J,Xia Y,Kong L,Ye W,Xiong Q,Qiao Y,Dong S,Ma W,Wang Y

    更新日期:2015-08-28 00:00:00

  • Correction: Correction: A Novel Rhabdovirus Associated with Acute Hemorrhagic Fever in Central Africa.

    abstract::[This corrects the article DOI: 10.1371/journal.ppat.1002924.]. ...

    journal_title:PLoS pathogens

    pub_type: 已发布勘误

    doi:10.1371/journal.ppat.1006583

    authors: Grard G,Fair JN,Lee D,Slikas E,Steffen I,Muyembe JJ,Sittler T,Veeraraghavan N,Ruby JG,Wang C,Makuwa M,Mulembakani P,Tesh RB,Mazet J,Rimoin AW,Taylor T,Schneider BS,Simmons G,Delwart E,Wolfe ND,Chiu CY,Leroy EM

    更新日期:2017-09-07 00:00:00

  • Red-light is an environmental effector for mutualism between begomovirus and its vector whitefly.

    abstract::Environments such as light condition influence the spread of infectious diseases by affecting insect vector behavior. However, whether and how light affects the host defense which further affects insect preference and performance, remains unclear, nor has been demonstrated how pathogens co-adapt light condition to fac...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1008770

    authors: Zhao P,Zhang X,Gong Y,Wang D,Xu D,Wang N,Sun Y,Gao L,Liu SS,Deng XW,Kliebenstein DJ,Zhou X,Fang RX,Ye J

    更新日期:2021-01-11 00:00:00

  • Host defense and recruitment of Foxp3⁺ T regulatory cells to the lungs in chronic Mycobacterium tuberculosis infection requires toll-like receptor 2.

    abstract::Acute resistance to low dose M. tuberculosis (Mtb) infection is not dependent on Toll-like receptor (TLR) 2. However, whether TLR2 contributes to resistance in chronic Mtb infection has remained uncertain. Here we report that, following low dose aerosol infection with Mtb, mice lacking TLR2 (TLR2KO), in comparison wit...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1003397

    authors: McBride A,Konowich J,Salgame P

    更新日期:2013-01-01 00:00:00

  • Agr-mediated dispersal of Staphylococcus aureus biofilms.

    abstract::The agr quorum-sensing system of Staphylococcus aureus modulates the expression of virulence factors in response to autoinducing peptides (AIPs). Recent studies have suggested a role for the agr system in S. aureus biofilm development, as agr mutants exhibit a high propensity to form biofilms, and cells dispersing fro...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1000052

    authors: Boles BR,Horswill AR

    更新日期:2008-04-25 00:00:00

  • Zinc-finger antiviral protein (ZAP) is a restriction factor for replication of modified vaccinia virus Ankara (MVA) in human cells.

    abstract::Modified vaccinia virus Ankara (MVA) is an approved smallpox vaccine and a promising vaccine vector for other pathogens as well as for cancer therapeutics with more than 200 current or completed clinical trials. MVA was derived by passaging the parental Ankara vaccine virus hundreds of times in chick embryo fibroblast...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1008845

    authors: Peng C,Wyatt LS,Glushakow-Smith SG,Lal-Nag M,Weisberg AS,Moss B

    更新日期:2020-08-31 00:00:00

  • Inflammation fuels colicin Ib-dependent competition of Salmonella serovar Typhimurium and E. coli in enterobacterial blooms.

    abstract::The host's immune system plays a key role in modulating growth of pathogens and the intestinal microbiota in the gut. In particular, inflammatory bowel disorders and pathogen infections induce shifts of the resident commensal microbiota which can result in overgrowth of Enterobacteriaceae ("inflammation-inflicted bloo...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1003844

    authors: Nedialkova LP,Denzler R,Koeppel MB,Diehl M,Ring D,Wille T,Gerlach RG,Stecher B

    更新日期:2014-01-01 00:00:00

  • Disrupting Mosquito Reproduction and Parasite Development for Malaria Control.

    abstract::The control of mosquito populations with insecticide treated bed nets and indoor residual sprays remains the cornerstone of malaria reduction and elimination programs. In light of widespread insecticide resistance in mosquitoes, however, alternative strategies for reducing transmission by the mosquito vector are urgen...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1006060

    authors: Childs LM,Cai FY,Kakani EG,Mitchell SN,Paton D,Gabrieli P,Buckee CO,Catteruccia F

    更新日期:2016-12-15 00:00:00

  • Magnaporthe oryzae Glycine-Rich Secretion Protein, Rbf1 Critically Participates in Pathogenicity through the Focal Formation of the Biotrophic Interfacial Complex.

    abstract::Magnaporthe oryzae, the fungus causing rice blast disease, should contend with host innate immunity to develop invasive hyphae (IH) within living host cells. However, molecular strategies to establish the biotrophic interactions are largely unknown. Here, we report the biological function of a M. oryzae-specific gene,...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1005921

    authors: Nishimura T,Mochizuki S,Ishii-Minami N,Fujisawa Y,Kawahara Y,Yoshida Y,Okada K,Ando S,Matsumura H,Terauchi R,Minami E,Nishizawa Y

    更新日期:2016-10-06 00:00:00

  • The relationship between host lifespan and pathogen reservoir potential: an analysis in the system Arabidopsis thaliana--cucumber mosaic virus.

    abstract::Identification of the determinants of pathogen reservoir potential is central to understand disease emergence. It has been proposed that host lifespan is one such determinant: short-lived hosts will invest less in costly defenses against pathogens, so that they will be more susceptible to infection, more competent as ...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1004492

    authors: Hily JM,García A,Moreno A,Plaza M,Wilkinson MD,Fereres A,Fraile A,García-Arenal F

    更新日期:2014-11-06 00:00:00

  • ZFYVE1 negatively regulates MDA5- but not RIG-I-mediated innate antiviral response.

    abstract::The retinoic acid-inducible gene-I (RIG-I)-like receptors (RLRs), including RIG-I and melanoma differentiation-associated gene 5 (MDA5), sense cytoplasmic viral RNA and initiate innate antiviral responses. How RIG-I and MDA5 are differentially regulated remains enigmatic. In this study, we identified the guanylate-bin...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1008457

    authors: Zhong X,Feng L,Zang R,Lei CQ,Yang Q,Shu HB

    更新日期:2020-04-06 00:00:00

  • Protein C inhibitor--a novel antimicrobial agent.

    abstract::Protein C inhibitor (PCI) is a heparin-binding serine proteinase inhibitor belonging to the family of serpin proteins. Here we describe that PCI exerts broad antimicrobial activity against bacterial pathogens. This ability is mediated by the interaction of PCI with lipid membranes, which subsequently leads to their pe...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1000698

    authors: Malmström E,Mörgelin M,Malmsten M,Johansson L,Norrby-Teglund A,Shannon O,Schmidtchen A,Meijers JC,Herwald H

    更新日期:2009-12-01 00:00:00

  • L-glutamine Induces Expression of Listeria monocytogenes Virulence Genes.

    abstract::The high environmental adaptability of bacteria is contingent upon their ability to sense changes in their surroundings. Bacterial pathogen entry into host poses an abrupt and dramatic environmental change, during which successful pathogens gauge multiple parameters that signal host localization. The facultative human...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1006161

    authors: Haber A,Friedman S,Lobel L,Burg-Golani T,Sigal N,Rose J,Livnat-Levanon N,Lewinson O,Herskovits AA

    更新日期:2017-01-23 00:00:00

  • The role of host DNA ligases in hepadnavirus covalently closed circular DNA formation.

    abstract::Hepadnavirus covalently closed circular (ccc) DNA is the bona fide viral transcription template, which plays a pivotal role in viral infection and persistence. Upon infection, the non-replicative cccDNA is converted from the incoming and de novo synthesized viral genomic relaxed circular (rc) DNA, presumably through e...

    journal_title:PLoS pathogens

    pub_type: 杂志文章

    doi:10.1371/journal.ppat.1006784

    authors: Long Q,Yan R,Hu J,Cai D,Mitra B,Kim ES,Marchetti A,Zhang H,Wang S,Liu Y,Huang A,Guo H

    更新日期:2017-12-29 00:00:00