abstract：:Escherichia coli sequence type 131 (ST131), a pandemic clone responsible for the high incidence of extraintestinal pathogenic E. coli (ExPEC) infections, has been known widely for its contribution to the worldwide dissemination of multidrug resistance. Although other ExPEC-associated and extended-spectrum-β-lactamase ...

journal_title：mBio

authors： Shaik S,Ranjan A,Tiwari SK,Hussain A,Nandanwar N,Kumar N,Jadhav S,Semmler T,Baddam R,Islam MA,Alam M,Wieler LH,Watanabe H,Ahmed N

更新日期：2017-10-24 00:00:00

abstract：:Malaria parasite ookinetes must traverse the vector mosquito midgut epithelium to transform into sporozoite-producing oocysts. The Anopheles innate immune system is a key regulator of this process, thereby determining vector competence and disease transmission. The role of Anopheles innate immunity factors as agonists...

journal_title：mBio

authors： Simões ML,Mlambo G,Tripathi A,Dong Y,Dimopoulos G

更新日期：2017-10-17 00:00:00

abstract：:Peptides that are synthesized independently of the ribosome in plants, fungi, and bacteria can have clinically relevant anticancer, antihemochromatosis, and antiviral activities, among many other. Despite their natural origin, discovering new natural products is challenging, and there is a need to expand the chemical ...

journal_title：mBio

authors： Cleto S,Lu TK

更新日期：2017-10-10 00:00:00

abstract：:Transposon insertion sequencing (TIS) is a powerful high-throughput genetic technique that is transforming functional genomics in prokaryotes, because it enables genome-wide mapping of the determinants of fitness. However, current approaches for analyzing TIS data assume that selective pressures are constant over time...

journal_title：mBio

authors： Yang G,Billings G,Hubbard TP,Park JS,Yin Leung K,Liu Q,Davis BM,Zhang Y,Wang Q,Waldor MK

更新日期：2017-10-03 00:00:00

abstract：:The saw-toothed grain beetle, Oryzaephilus surinamensis (Silvanidae), is a cosmopolitan stored-product pest. Early studies on O. surinamensis in the 1930s described the presence of peculiar bacteriomes harboring endosymbiotic bacteria in the abdomen. Since then, however, the microbiological nature of the symbiont has ...

journal_title：mBio

authors： Hirota B,Okude G,Anbutsu H,Futahashi R,Moriyama M,Meng XY,Nikoh N,Koga R,Fukatsu T

更新日期：2017-09-26 00:00:00

abstract：:The four dengue virus serotypes (DENV1 to 4) cause dengue, a major public health problem worldwide. Individuals exposed to primary DENV infections develop serotype-specific neutralizing antibodies, including strongly neutralizing antibodies targeting quaternary epitopes. To date, no studies have measured the levels an...

journal_title：mBio

authors： Andrade DV,Katzelnick LC,Widman DG,Balmaseda A,de Silva AM,Baric RS,Harris E

更新日期：2017-09-19 00:00:00

abstract：:Bacillus anthracis-a Gram-positive, spore-forming bacterium-causes anthrax, a highly lethal disease with high bacteremia titers. Such rapid growth requires ample access to nutrients, including iron. However, access to this critical metal is heavily restricted in mammals, which requires B. anthracis to employ petrobact...

journal_title：mBio

authors： Hagan AK,Tripathi A,Berger D,Sherman DH,Hanna PC

更新日期：2017-09-12 00:00:00

abstract：:Staphylococcus aureus is intrinsically resistant to polymyxins (polymyxin B and colistin), an important class of cationic antimicrobial peptides used in treatment of Gram-negative bacterial infections. To understand the mechanisms underlying intrinsic polymyxin resistance in S. aureus, we screened the Nebraska Transpo...

journal_title：mBio

authors： Vestergaard M,Nøhr-Meldgaard K,Bojer MS,Krogsgård Nielsen C,Meyer RL,Slavetinsky C,Peschel A,Ingmer H

更新日期：2017-09-05 00:00:00

abstract：:In immunocompromised hosts, latent infection with Toxoplasma gondii can reactivate from tissue cysts, leading to encephalitis. A characteristic of T. gondii bradyzoites in tissue cysts is the presence of amylopectin granules. The regulatory mechanisms and role of amylopectin accumulation in this organism are not fully...

journal_title：mBio

authors： Sugi T,Tu V,Ma Y,Tomita T,Weiss LM

更新日期：2017-08-29 00:00:00

abstract：:Our knowledge of cell cycle regulatory mechanisms in apicomplexan parasites is very limited. In this study, we describe a novel Toxoplasma gondii factor that has a vital role in chromosome replication and the regulation of cytoplasmic and nuclear mitotic structures, and we named this factor ECR1 for essential for chro...

journal_title：mBio

authors： Naumov A,Kratzer S,Ting LM,Kim K,Suvorova ES,White MW

更新日期：2017-08-22 00:00:00

abstract：:Legionella pneumophila grows within cells ranging from environmental amoebae to human macrophages. In spite of this conserved strategy of pathogenesis, identification of host factors that restrict L. pneumophila intracellular replication has not been extended outside components of the mammalian innate immune response....

journal_title：mBio

authors： de Jesús-Díaz DA,Murphy C,Sol A,Dorer M,Isberg RR

更新日期：2017-08-22 00:00:00

abstract：:Yellow fever virus (YFV) is an arthropod-borne flavivirus, infecting ~200,000 people worldwide annually and causing about 30,000 deaths. The live attenuated vaccine strain, YFV-17D, has significantly contributed in controlling the global burden of yellow fever worldwide. However, the viral and host contributions to YF...

journal_title：mBio

authors： Douam F,Soto Albrecht YE,Hrebikova G,Sadimin E,Davidson C,Kotenko SV,Ploss A

更新日期：2017-08-15 00:00:00

abstract：:Fission yeast phosphate homeostasis entails transcriptional induction of genes encoding phosphate-mobilizing proteins under conditions of phosphate starvation. Transcription factor Pho7, a member of the Zn2Cys6 family of fungal transcription regulators, is the central player in the starvation response. The DNA binding...

journal_title：mBio

authors： Schwer B,Sanchez AM,Garg A,Chatterjee D,Shuman S

更新日期：2017-08-15 00:00:00

abstract：:The human malaria parasite Plasmodium falciparum replicates within circulating red blood cells, where it is subjected to conditions that frequently cause DNA damage. The repair of DNA double-stranded breaks (DSBs) is thought to rely almost exclusively on homologous recombination (HR), due to a lack of efficient nonhom...

journal_title：mBio

authors： Calhoun SF,Reed J,Alexander N,Mason CE,Deitsch KW,Kirkman LA

更新日期：2017-08-08 00:00:00

abstract：:The Pseudomonas quinolone signal (PQS) is an important quorum-sensing molecule in Pseudomonas aeruginosa that also mediates its own packaging and transport by stimulating outer membrane vesicle (OMV) formation. Because OMVs have been implicated in many virulence-associated behaviors, it is critical that we understand ...

journal_title：mBio

authors： Florez C,Raab JE,Cooke AC,Schertzer JW

更新日期：2017-08-08 00:00:00

abstract：:Macrophage-derived nitric oxide (NO·) is a crucial effector against invading pathogens. Yet, paradoxically, several bacterial species, including some pathogens, are known to endogenously produce NO· via nitric oxide synthase (NOS) activity, despite its apparent cytotoxicity. Here, we reveal a conserved role for bacter...

journal_title：mBio

authors： Chaudhari SS,Kim M,Lei S,Razvi F,Alqarzaee AA,Hutfless EH,Powers R,Zimmerman MC,Fey PD,Thomas VC

更新日期：2017-08-01 00:00:00

abstract：:The rapid increase of carbapenem resistance in Gram-negative bacteria has resurrected the importance of the polymyxin antibiotics. The recent discovery of plasmid-mediated polymyxin resistance (mcr-1) in carbapenem-resistant Enterobacteriaceae serves as an important indicator that the golden era of antibiotics is unde...

journal_title：mBio

authors： Bulman ZP,Chen L,Walsh TJ,Satlin MJ,Qian Y,Bulitta JB,Peloquin CA,Holden PN,Nation RL,Li J,Kreiswirth BN,Tsuji BT

更新日期：2017-07-25 00:00:00

abstract：:Plant roots support complex microbial communities that can influence plant growth, nutrition, and health. While extensive characterizations of the composition and spatial compartmentalization of these communities have been performed in different plant species, there is relatively little known about the impact of abiot...

journal_title：mBio

authors： Santos-Medellín C,Edwards J,Liechty Z,Nguyen B,Sundaresan V

更新日期：2017-07-18 00:00:00

abstract：:The growing ubiquity of electronic devices is increasingly consuming substantial energy and rare resources for materials fabrication, as well as creating expansive volumes of toxic waste. This is not sustainable. Electronic biological materials (e-biologics) that are produced with microbes, or designed with microbial ...

journal_title：mBio

authors： Lovley DR

更新日期：2017-06-27 00:00:00

abstract：:The yeast Yarrowia lipolytica is a potent accumulator of lipids, and lipogenesis in this organism can be influenced by a variety of factors, such as genetics and environmental conditions. Using a multifactorial study, we elucidated the effects of both genetic and environmental factors on regulation of lipogenesis in Y...

journal_title：mBio

authors： Kerkhoven EJ,Kim YM,Wei S,Nicora CD,Fillmore TL,Purvine SO,Webb-Robertson BJ,Smith RD,Baker SE,Metz TO,Nielsen J

更新日期：2017-06-20 00:00:00

abstract：:The major oxidative stress response in Streptomyces is controlled by the sigma factor SigR and its cognate antisigma factor RsrA, and SigR activity is tightly controlled through multiple mechanisms at both the transcriptional and posttranslational levels. Here we show that sigR has a highly unusual GTC start codon and...

journal_title：mBio

authors： Feeney MA,Chandra G,Findlay KC,Paget MSB,Buttner MJ

更新日期：2017-06-13 00:00:00

abstract：:Lateral gene transfer (LGT) profoundly shapes the evolution of bacterial lineages. LGT across disparate phylogenetic groups and genome content diversity between related organisms suggest a model of bacterial evolution that views LGT as rampant and promiscuous. It has even driven the argument that species concepts and ...

journal_title：mBio

authors： McDonald BR,Currie CR

更新日期：2017-06-06 00:00:00

abstract：:Murein lipoprotein (Lpp) and peptidoglycan-associated lipoprotein (Pal) are major outer membrane lipoproteins in Escherichia coli Their roles in cell-envelope integrity have been documented in E. coli laboratory strains, and while Lpp has been linked to serum resistance in vitro, the underlying mechanism has not been ...

journal_title：mBio

authors： Diao J,Bouwman C,Yan D,Kang J,Katakam AK,Liu P,Pantua H,Abbas AR,Nickerson NN,Austin C,Reichelt M,Sandoval W,Xu M,Whitfield C,Kapadia SB

更新日期：2017-05-23 00:00:00

abstract：:Resistance-nodulation-division (RND) superfamily efflux systems have been widely studied for their role in antibiotic resistance, but their native biological functions remain poorly understood. We previously showed that loss of RND-mediated efflux in Vibrio cholerae resulted in activation of the Cpx two-component regu...

journal_title：mBio

authors： Kunkle DE,Bina XR,Bina JE

更新日期：2017-05-16 00:00:00

abstract：:The diversity of the genetic code systems used by microbes on earth is yet to be elucidated. It is known that certain methanogenic archaea employ an alternative system for cysteine (Cys) biosynthesis and encoding; tRNACys is first acylated with phosphoserine (Sep) by O-phosphoseryl-tRNA synthetase (SepRS) and then con...

journal_title：mBio

authors： Mukai T,Crnković A,Umehara T,Ivanova NN,Kyrpides NC,Söll D

更新日期：2017-05-09 00:00:00

abstract：:Photosynthetic bacteria are capable of producing their own food via photosynthesis. Unsurprisingly, they evolved the ability to move toward better light conditions (i.e., phototaxis). In a recent article in mBio, Chau et al. tuned the wavelength, flux, direction, and timing of light input and characterized the motilit...

journal_title：mBio

authors： Kim M

更新日期：2017-04-11 00:00:00

abstract：:Ebola virus (EBOV) protein VP35 inhibits production of interferon alpha/beta (IFN) by blocking RIG-I-like receptor signaling pathways, thereby promoting virus replication and pathogenesis. A high-throughput screening assay, developed to identify compounds that either inhibit or bypass VP35 IFN-antagonist function, ide...

journal_title：mBio

authors： Luthra P,Aguirre S,Yen BC,Pietzsch CA,Sanchez-Aparicio MT,Tigabu B,Morlock LK,García-Sastre A,Leung DW,Williams NS,Fernandez-Sesma A,Bukreyev A,Basler CF

更新日期：2017-04-04 00:00:00

abstract：:SpxA is a unique transcriptional regulator highly conserved among members of the phylum Firmicutes that binds RNA polymerase and can act as an antiactivator. Why some Firmicutes members have two highly similar SpxA paralogs is not understood. Here, we show that the SpxA paralogs of the pathogen Streptococcus pyogenes,...

journal_title：mBio

authors： Port GC,Cusumano ZT,Tumminello PR,Caparon MG

更新日期：2017-03-28 00:00:00

abstract：:Neisseria meningitidis (the meningococcus) is primarily a commensal of the human oropharynx that sporadically causes septicemia and meningitis. Meningococci adapt to diverse local host conditions differing in nutrient supply, like the nasopharynx, blood, and cerebrospinal fluid, by changing metabolism and protein repe...

journal_title：mBio

authors： Pannekoek Y,Huis In 't Veld RA,Schipper K,Bovenkerk S,Kramer G,Brouwer MC,van de Beek D,Speijer D,van der Ende A

更新日期：2017-03-21 00:00:00

abstract：:Epidemiological studies on Streptococcus pneumoniae show that rates of carriage are highest in early childhood and that the major benefit of the pneumococcal conjugate vaccine (PCV) is a reduction in the incidence of nasopharyngeal colonization through decreased transmission within a population. In this study, we soug...

journal_title：mBio

authors： Zangari T,Wang Y,Weiser JN

更新日期：2017-03-14 00:00:00

abstract：:The pathogenic species of Cryptococcus are a major cause of mortality owing to severe infections in immunocompromised as well as immunocompetent individuals. Although antifungal treatment is usually effective, many patients relapse after treatment, and in such cases, comparative analyses of the genomes of incident and...

journal_title：mBio

authors： Chen Y,Farrer RA,Giamberardino C,Sakthikumar S,Jones A,Yang T,Tenor JL,Wagih O,Van Wyk M,Govender NP,Mitchell TG,Litvintseva AP,Cuomo CA,Perfect JR

更新日期：2017-03-07 00:00:00

abstract：:We showed previously that the histone lysine methyltransferase (HKMT) H3K27me3 (EZH2) is the catalytic subunit of Polycomb repressive complex 2 (PRC2) and is required for the maintenance of HIV-1 latency in Jurkat T cells. Here we show, by using chromatin immunoprecipitation experiments, that both PRC2 and euchromatic...

journal_title：mBio

authors： Nguyen K,Das B,Dobrowolski C,Karn J

更新日期：2017-02-28 00:00:00

abstract：:Enterococci are ancient commensal bacteria that recently emerged as leading causes of antibiotic-resistant, hospital-acquired infection. Vancomycin-resistant enterococci (VRE) epitomize why drug-resistant enterococcal infections are a problem: VRE readily colonize the antibiotic-perturbed gastrointestinal (GI) tract w...

journal_title：mBio

authors： Van Tyne D,Gilmore MS

更新日期：2017-02-21 00:00:00

abstract：:The genetic and biochemical basis of perchlorate-dependent H2S oxidation (PSOX) was investigated in the dissimilatory perchlorate-reducing microorganism (DPRM) Azospira suillum PS (PS). Previously, it was shown that all known DPRMs innately oxidize H2S, producing elemental sulfur (So). Although the process involving P...

journal_title：mBio

authors： Mehta-Kolte MG,Loutey D,Wang O,Youngblut MD,Hubbard CG,Wetmore KM,Conrad ME,Coates JD

更新日期：2017-02-21 00:00:00

abstract：:Membrane repair emerges as an innate defense protecting target cells against bacterial pore-forming toxins. Here, we report the first paradigm of Ca2+-dependent repair following attack by a small β-pore-forming toxin, namely, plasmid-encoded phobalysin of Photobacterium damselae subsp. damselae In striking contrast, V...

journal_title：mBio

authors： von Hoven G,Rivas AJ,Neukirch C,Meyenburg M,Qin Q,Parekh S,Hellmann N,Husmann M

更新日期：2017-02-14 00:00:00

abstract：:Members of the genus Mycobacterium are the most prevalent cause of infectious diseases. Mycobacteria have a complex cell envelope containing a peptidoglycan layer and an additional arabinogalactan polymer to which a mycolic acid bilayer is linked; this complex, multilayered cell wall composition (mAGP) is conserved am...

journal_title：mBio

authors： Schubert K,Sieger B,Meyer F,Giacomelli G,Böhm K,Rieblinger A,Lindenthal L,Sachs N,Wanner G,Bramkamp M

更新日期：2017-02-07 00:00:00

abstract：:Adaptation to alternating CO2 concentrations is crucial for all organisms. Carbonic anhydrases-metalloenzymes that have been found in all domains of life-enable fixation of scarce CO2 by accelerating its conversion to bicarbonate and ensure maintenance of cellular metabolism. In fungi and other eukaryotes, the carboni...

journal_title：mBio

authors： Pohlers S,Martin R,Krüger T,Hellwig D,Hänel F,Kniemeyer O,Saluz HP,Van Dijck P,Ernst JF,Brakhage A,Mühlschlegel FA,Kurzai O

更新日期：2017-01-31 00:00:00

abstract：:Catabolite control protein A (CcpA) is the master regulator in Gram-positive bacteria that mediates carbon catabolite repression (CCR) and carbon catabolite activation (CCA), two fundamental regulatory mechanisms that enable competitive advantages in carbon catabolism. It is generally regarded that CcpA exerts its reg...

journal_title：mBio

authors： Yang Y,Zhang L,Huang H,Yang C,Yang S,Gu Y,Jiang W

更新日期：2017-01-24 00:00:00

abstract：:For decades, identifying the regions of a bacterial chromosome that are necessary for viability has relied on mapping integration sites in libraries of random transposon mutants to find loci that are unable to sustain insertion. To date, these studies have analyzed subsaturated libraries, necessitating the application...

journal_title：mBio

authors： DeJesus MA,Gerrick ER,Xu W,Park SW,Long JE,Boutte CC,Rubin EJ,Schnappinger D,Ehrt S,Fortune SM,Sassetti CM,Ioerger TR

更新日期：2017-01-17 00:00:00

abstract：:Innate immune response plays a critical role in controlling invading pathogens, but such an immune response must be tightly regulated. Insufficient or overactivated immune responses may lead to harmful or even fatal consequences. To dissect the complex host-parasite interactions and the molecular mechanisms underlying...

journal_title：mBio

authors： Cai B,Wu J,Yu X,Su XZ,Wang RF

更新日期：2017-01-03 00:00:00