Results 71 to 80 of about 11,687 (237)

Amyloid-like Hfq interaction with single-stranded DNA: involvement in recombination and replication in Escherichia coli

QRB Discovery, 2022
Interactions between proteins and single-stranded DNA (ssDNA) are crucial for many fundamental biological processes, including DNA replication and genetic recombination.
Krzysztof Kubiak, Frank Wien, Indresh Yadav, Nykola C. Jones, Søren Vrønning Hoffmann, Eric Le Cam, Antoine Cossa, Frederic Geinguenaud, Johan R. C. van der Maarel, Grzegorz Węgrzyn, Véronique Arluison   +10 more
doaj   +1 more source

CRP-cAMP mediates silencing of Salmonella virulence at the post-transcriptional level [PDF]

, 2018
Invasion of epithelial cells by Salmonella enterica requires expression of genes located in the pathogenicity island I (SPI-1). The expression of SPI-1 genes is very tightly regulated and activated only under specific conditions.
Balsalobre, Carlos, El Mouali, Youssef, Gaviria-Cantin, Tania, Gilbert, Marta, Sánchez Romero, María Antonia, Vogel, Jörg, Westermann, Alexander J.   +6 more
core   +4 more sources

Biological and transcriptomic studies reveal hfq is required for swimming, biofilm formation and stress response in Xanthomonas axonpodis pv. citri

BMC Microbiology, 2019
Background Hfq is a widely conserved bacterial RNA-binding protein which generally mediates the global regulatory activities involv ed in physiological process and virulence.
Xuelu Liu, Yuping Yan, Haodi Wu, Changyong Zhou, Xuefeng Wang   +4 more
doaj   +1 more source

Defining a role for Hfq in Gram-positive bacteria: evidence for Hfq-dependent antisense regulation in Listeria monocytogenes [PDF]

Nucleic Acids Research, 2009
Small trans-encoded RNAs (sRNAs) modulate the translation and decay of mRNAs in bacteria. In Gram-negative species, antisense regulation by trans-encoded sRNAs relies on the Sm-like protein Hfq. In contrast to this, Hfq is dispensable for sRNA-mediated riboregulation in the Gram-positive species studied thus far.
Nielsen, Jesper Sejrup, Lei, Lisbeth Kristensen, Ebersbach, Tine, Olsen, Anders Steno, Klitgaard, Janne Kudsk, Valentin-Hansen, Poul, Kallipolitis, Birgitte H.   +6 more
openaire   +4 more sources

Monopole Floer homology for rational homology 3-spheres

, 2010
We give a new construction of monopole Floer homology for spin-c rational homology 3-spheres. As applications we define two invariants of certain smooth compact 4-manifolds with b_1=1 and b^+=0.Comment: 60 pages, to appear in Duke J. Math.
Froyshov, Kim A.
core   +1 more source

Regulation of fixLJ by Hfq Controls Symbiotically Important Genes in Sinorhizobium meliloti

Molecular Plant-Microbe Interactions, 2016
The RNA-binding chaperone Hfq plays critical roles in the establishment and functionality of the symbiosis between Sinorhizobium meliloti and its legume hosts. A mutation in hfq reduces symbiotic efficiency resulting in a Fix− phenotype, characterized by
Mengsheng Gao, Hahn Nguyen, Isai Salas González, Max Teplitski   +3 more
doaj   +1 more source

Orthogonality of Hermite polynomials in superspace and Mehler type formulae [PDF]

, 2011
In this paper, Hermite polynomials related to quantum systems with orthogonal O(m)-symmetry, finite reflection group symmetry G < O(m), symplectic symmetry Sp(2n) and superspace symmetry O(m) x Sp(2n) are considered.
Coulembier, Kevin, De Bie, Hendrik, Sommen, Frank   +2 more
core   +3 more sources

Hfq variant with altered RNA binding functions [PDF]

Nucleic Acids Research, 2006
The interaction between Hfq and RNA is central to multiple regulatory processes. Using site-directed mutagenesis, we have found a missense mutation in Hfq (V43R) which strongly affects2 the RNA binding capacity of the Hfq protein and its ability to stimulate poly(A) tail elongation by poly(A)-polymerase in vitro.
Olivier Pellegrini, Marc Folichon, Philippe Derreumaux, Philippe Régnier, Irina V. Boni, Katarzyna Ziolkowska, Eliane Hajnsdorf   +6 more
openaire   +4 more sources

Shewanella oneidensis Hfq promotes exponential phase growth, stationary phase culture density, and cell survival

BMC Microbiology, 2013
Background Hfq is an RNA chaperone protein that has been broadly implicated in sRNA function in bacteria. Here we describe the construction and characterization of a null allele of the gene that encodes the RNA chaperone Hfq in Shewanella oneidensis ...
Brennan Christopher M, Keane Meghan L, Hunt Taylor M, Goulet Matthew T, Mazzucca Nicholas Q, Sexton Zachary, Mezoian Taylor, Douglas Katherine E, Osborn Jessica M, Pellock Brett J   +9 more
doaj   +1 more source

The metabolic enzyme AdhE controls the virulence of Escherichia coli O157:H7 [PDF]

, 2014
Classical studies have focused on the role that individual regulators play in controlling virulence gene expression. An emerging theme, however, is that bacterial metabolism also plays a key role in this process.
Abernathy, Anders, Baumler, Bergman, Boehm, Booth, Campellone, Chevance, Clark, Coburn, Creek, Echave, Elliott, Emmerson, Frankel, Fukuda, Fukuda, Hansen, Hartland, Hayashi, Hu, Hu, Hueck, Iyoda, Kendall, Kuhn, Mahajan, Massé, Minato, Nataro, Naylor, Noris, Paul, Porter, Rietsch, Rietsch, Ritchie, Ritchie, Roe, Roe, Scheltema, Shevchenko, Smith, Soutourina, Sullivan, Sánchez-Sanmarti, Thao, Tobe, Tree, Turner, Vytvytska, Wang, Wang, Weinert, Wolfe, Wolfe, Wolfe, Zhang, Zhao, Zumbrun   +59 more
core   +2 more sources