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1,136 Newest Publications in molecular microbiology
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Interplay of Aro80 and GATA activators in regulation of genes for catabolism of aromatic amino acids in Saccharomyces cerevisiae
08-05-2013 | Kyusung Lee, Ji‐Sook Hahn, Molecular Microbiology, 2013
Summary Aro80, a member of the Zn2Cys6 family proteins, activates expression of the ARO9 and ARO10 genes involved in catabolism of aromatic amino acids in response to aromatic amino acids that act as inducers. ARO9 and ARO10 are also under the control of nitrogen catabolite repression, ...
The role of zinc in the interplay between pathogenic streptococci and their hosts
08-05-2013 | Sulman Shafeeq, Oscar P. Kuipers, Tomas G. Kloosterman, Molecular Microbiology, 2013
Abstract Recent studies on pathogenic streptococci have revealed that zinc is a pivotal metal ion in their interaction with the host. In these streptococci, systems exist that ensure optimal use of zinc from the surrounding milieu, as well as export of zinc when concentrations exceed ...
Paralogous chemoreceptors mediate chemotaxis towards protein amino acids and the non‐protein amino acid gamma‐aminobutyrate (GABA)
08-05-2013 | Miriam Rico‐Jiménez, Francisco Muñoz‐Martínez, Cristina García‐Fontana, Matilde Fernandez, Bertrand Morel, Álvaro Or ..., Molecular Microbiology, 2013
Summary The paralogous receptors PctA, PctB and PctC of Pseudomonas aeruginosa were reported to mediate chemotaxis to amino acids, intermediates of amino acid metabolism and chlorinated hydrocarbons. We show that the recombinant ligand binding regions (LBRs) of PctA, PctB and PctC bind ...
Ustilago maydis natural antisense transcript expression alters mRNA stability and pathogenesis
08-05-2013 | Michael E. Donaldson, Barry J. Saville, Molecular Microbiology, 2013
Summary Ustilago maydis infection of Zea mays leads to the production of thick‐walled diploid teliospores that are the dispersal agent for this pathogen. Transcriptome analyses of this model biotrophic basidiomycete fungus identified natural antisense transcripts (NATs) complementary to ...
Mutation design and strain background influence the phenotype of Escherichia coli luxS mutants
08-05-2013 | Richard Haigh, Brijesh Kumar, Sara Sandrini, Primrose Freestone, Molecular Microbiology, 2013
Summary Previous analyses of luxS in Escherichia coli have used different strain backgrounds and design formats to produce the luxS mutation, resulting in luxS mutants with confusingly dissimilar phenotypes. This study therefore investigates the roles that strain background and mutational ...
Identification of ClpP substrates in Caulobacter crescentus reveals a role for regulated proteolysis in bacterial development
07-05-2013 | Nowsheen H. Bhat, Robert H. Vass, Patrick R. Stoddard, Dong K. Shin, Peter Chien, Molecular Microbiology, 2013
Summary Energy‐dependent proteases ensure the timely removal of unwanted proteins in a highly selective fashion. In Caulobacter crescentus, protein degradation by the ClpXP protease is critical for cell cycle progression; however, only a handful of substrates are currently known. Here, we ...
The loss of virulence of histone H1 overexpressing Leishmania donovani parasites is directly associated with a reduction of HSP83 rate of translation
07-05-2013 | Alexandros Alexandratos, Joachim Clos, Martina Samiotaki, Antonia Efstathiou, George Panayotou, Ketty Soteriadou, De ..., Molecular Microbiology, 2013
Summary Overexpression of Leishmania histone H1 (LeishH1) was previously found to cause a promastigote‐to‐amastigote differentiation handicap, deregulation of cell‐cycle progression, and loss of parasite infectivity. The aim of this study was to identify changes in the proteome of LeishH1 ...
Identification and characterization of 2‐naphthoyl‐coenzyme A reductase, the prototype of a novel class of dearomatizing reductases
07-05-2013 | Christian Eberlein, Sebastian Estelmann, Jana Seifert, Martin von Bergen, Michael Müller, Rainer U. Meckenstock, Mat ..., Molecular Microbiology, 2013
Summary The enzymatic dearomatization of aromatic ring systems by reduction represents a highly challenging redox reaction in biology and plays a key role in the degradation of aromatic compounds under anoxic conditions. In anaerobic bacteria, most monocyclic aromatic growth substrates ...
RemA is a DNA‐binding protein that activates biofilm matrix gene expression in Bacillus subtilis
07-05-2013 | Jared T. Winkelman, Anna C. Bree, Ashley R. Bate, Patrick Eichenberger, Richard L. Gourse, Daniel B. Kearns, Molecular Microbiology, 2013
Summary Biofilm formation in Bacillus subtilis requires expression of the eps and tapA‐sipW‐tasA operons to synthesize the extracellular matrix components, extracellular polysaccharide and TasA amyloid proteins, respectively. Expression of both operons is inhibited by the DNA‐binding ...
Integrated stress response of Escherichia coli to methylglyoxal: transcriptional readthrough from the nemRA operon enhances protection through increased expression of glyoxalase I
06-05-2013 | Ertan Ozyamak, Camila Almeida, Alessandro P. S. Moura, Samantha Miller, Ian R. Booth, Molecular Microbiology, 2013
Summary Methylglyoxal (MG) elicits activation of K+ efflux systems to protect cells against the toxicity of the electrophile. ChIP‐chip targeting RNA polymerase, supported by a range of other biochemical measurements and mutant creation, was used to identify genes transcribed in response ...
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