Biotype and macromolecular profiles of cytotoxin-producing strains of Helicobacter pylori from antral gastric mucosa.

abstract：:Biochemical responses to cold and osmotic stresses overlap because each decreases the availability of free water. Since RNA-binding proteins are known to accumulate following cold stress and play key roles in regulating transcription termination, the effect of osmotic stress on expression of RNA-binding proteins was e...

journal_title：FEMS microbiology letters

authors： Mori S,Castoreno A,Mulligan ME,Lammers PJ

更新日期：2003-10-24 00:00:00

abstract：:A growing body of evidence implicates streptococcal and staphylococcal superantigens in the development of psoriasis, atopic dermatitis and Kawasaki syndrome. In each of these illnesses, an abnormal state of immunologic activity is observed. Superantigens, which have a unique ability to activate large numbers of lymph...

journal_title：FEMS microbiology letters

authors： Yarwood JM,Leung DY,Schlievert PM

更新日期：2000-11-01 00:00:00

abstract：:Bjerkandera adusta produces many chlorometabolites including chlorinated anisyl metabolites (CAMs) and 1-arylpropane-1,2-diols (1, 2, 3, 4) as idiophasic metabolic products of L-phenylalanine. These diols are stereoselectively biosynthesized from a C7-unit (benzylic, from L-phenylalanine) and a C2-unit, of unknown ori...

journal_title：FEMS microbiology letters

authors： Silk PJ,Macaulay JB

更新日期：2003-11-07 00:00:00

abstract：:Tolaasin is a peptide toxin produced by Pseudomonas tolaasii and causes brown blotch disease of the cultivated mushrooms. Two types of ion channels were identified by the incorporation of tolaasin into lipid bilayer. The slope conductance of type 1 channel measured in the buffer containing 100 mM KCl was 150 pS with a...

journal_title：FEMS microbiology letters

authors： Cho KH,Kim YK

更新日期：2003-04-25 00:00:00

abstract：:Uncultured archaeal anaerobic methanotrophs (ANMEs) are known to operate the anaerobic oxidation of methane process, an important sink for the greenhouse gas methane in natural environments. In this study, we designed 16S rRNA gene-specific primers for each of the phylogenetic groups of ANMEs (ANME-1, Guaymas Basin hy...

journal_title：FEMS microbiology letters

authors： Miyashita A,Mochimaru H,Kazama H,Ohashi A,Yamaguchi T,Nunoura T,Horikoshi K,Takai K,Imachi H

更新日期：2009-08-01 00:00:00

abstract：:Environmental persistence of Mycobacterium tuberculosis is subject to speculation. However, the reality that infected postmortem tissues can be a danger to pathologists and embalmers has worrisome implications. A few experimental studies have demonstrated the organism's ability to withstand exposure to embalming fluid...

journal_title：FEMS microbiology letters

authors： Lemma E,Zimhony O,Greenblatt CL,Koltunov V,Zylber MI,Vernon K,Spigelman M

更新日期：2008-06-01 00:00:00

abstract：:Many antibiotic-producing actinomycetes possess at least one ABC (ATP-binding cassette) transporter which forms part of the antibiotic biosynthetic pathway and in most cases confers resistance to the drug in an heterologous host. Three types of antibiotic ABC transporters have been so far described in producer organis...

journal_title：FEMS microbiology letters

authors： Méndez C,Salas JA

更新日期：1998-01-01 00:00:00

abstract：:Intact nuclei were isolated from the protoplasts of the filamentous fungus Aspergillus nidulans. The large amounts of protoplasts required for such nuclear preparations were produced from young mycelia grown in liquid culture. For final purification of the crude nuclear fraction, a Nycodenz density-gradient centrifuga...

journal_title：FEMS microbiology letters

authors： Vágvölgyi C,Ferenczy L

更新日期：1991-08-15 00:00:00

abstract：:Type IV secretion systems are employed by a wide variety of Gram-negative microorganisms for the translocation of macromolecules across the cell envelope. The translocated substrates (proteins, protein-DNA complexes and DNA) are as diverse as the organisms on the donor and recipient side of the translocation process. ...

journal_title：FEMS microbiology letters

authors： Baron C

更新日期：2005-12-15 00:00:00

abstract：:Antibacterial effects in terms of biofilm formation and swarming motility were studied using polyacrylate plates having protruding or recessed shark skin micropatterned surfaces with a shallow groove (2 μm pattern width and spacing, 0.4 μm pattern height). It was found that biofilm formation and swarming motility of P...

journal_title：FEMS microbiology letters

authors： Sakamoto A,Terui Y,Horie C,Fukui T,Masuzawa T,Sugawara S,Shigeta K,Shigeta T,Igarashi K,Kashiwagi K

更新日期：2014-12-01 00:00:00

abstract：:Cell differentiation is one of the marks of multicellular organisms. Terminally specialised nitrogen-fixing cells, termed heterocysts, evolved in filamentous cyanobacteria more than 2 Gya. The development of their spacing pattern has been thoroughly investigated in model organisms such as Anabaena sp. PCC 7120. This p...

journal_title：FEMS microbiology letters

authors： Antonaru LA,Nürnberg DJ

更新日期：2017-08-15 00:00:00

abstract：:Piscirickettsia salmonis is a novel, aggressive, facultative Gram-negative bacterium that drastically affects salmon production at different latitudes, with particular impact in southern Chile. Initially, P. salmonis was described as a Rickettsia-like, obligate, intracellular Alphaproteobacteria, but it was reclassifi...

journal_title：FEMS microbiology letters

authors： Marshall SH,Henríquez V,Gómez FA,Cárdenas C

更新日期：2011-01-01 00:00:00

abstract：:A physical and functional map of Aspergillus tubingensis mtDNA type 2b was constructed and compared to Aspergillus niger typeI a mtDNA. The gene content and order, as well as the patterns of restriction sites, were similar. Two unidentified ORFs and several repeat elements were found in the region between the ndhl and...

journal_title：FEMS microbiology letters

authors： Juhász A,Láday M,Gácser A,Kucsera J,Pfeiffer I,Kevei F,Hamari Z

更新日期：2004-12-01 00:00:00

abstract：:The scrA gene coding for sucrose EnzymeII of the phosphoenolpyruvate dependent phosphotransferase system previously isolated from Streptococcus mutans was fused in vitro to the promoterless lacZ' gene to monitor the expression of the scrA gene. The scrA::lacZ gene fusion was introduced back into S. mutans GS-5IS3 by t...

journal_title：FEMS microbiology letters

authors： Sato Y,Yamamoto Y,Suzuki R,Kizaki H,Kuramitsu HK

更新日期：1991-04-15 00:00:00

abstract：:Nocardia asteroides complex organisms derived from human specimens between 1979 and 1992 were identified to the species level. Of 117 N. asteroides complex organisms, 34 (29%) were N. farcinica, 28 (24%) were N. nova, and 55 (47%) were N. asteroides sensu stricto. An analysis of the specimen sites from which the organ...

journal_title：FEMS microbiology letters

authors： Desmond EP,Flores M

更新日期：1993-07-01 00:00:00

abstract：:Streptomyces netropsis SD-07, the producer of novel polyene macrolide antifungal antibiotics, was isolated from soil. For the investigation of the functions of its biosynthesis genes and regulation mechanisms, a genetic operating system is necessary. In this study, we successfully transferred the plasmid DNA of pSET15...

journal_title：FEMS microbiology letters

authors： Wang XK,Jin JL

更新日期：2014-08-01 00:00:00

abstract：:Wood-rotting fungi possess remarkably diverse extracellular oxidation mechanisms, including enzymes, such as laccase and peroxidases, and Fenton chemistry. The ability to biologically drive Fenton chemistry by the redox cycling of quinones has previously been reported to be present in both ecologically diverging main ...

journal_title：FEMS microbiology letters

authors： Krueger MC,Bergmann M,Schlosser D

更新日期：2016-06-01 00:00:00

abstract：:The hepA gene in Anabaena sp. strain PCC 7120 is required for normal formation of the polysaccharide layer of the heterocyst envelope. A plasmid bearing hepA, interrupted by a neomycin-resistance cassette, was transferred by conjugation to wild type Anabaena variabilis ATCC 29413, so that the interrupted hepA gene rep...

journal_title：FEMS microbiology letters

authors： Leganés F

更新日期：1994-10-15 00:00:00

abstract：:In Saccharomyces cerevisiae, genes involved in thiamin pyrophosphate (TPP) synthesis (THI genes) and the pyruvate decarboxylase structural gene PDC5 are transcriptionally induced in response to thiamin starvation. Three positive regulatory factors (Thi2p, Thi3p, and Pdc2p) are involved in the expression of THI genes, ...

journal_title：FEMS microbiology letters

authors： Nosaka K,Esaki H,Onozuka M,Konno H,Hattori Y,Akaji K

更新日期：2012-05-01 00:00:00

abstract：:We have cloned and sequenced the rfaH gene from Salmonella enterica serovar Typhi strain Ty2. The gene showed a high degree of similarity to the rfaH genes from Escherichia coli K-12 and S. enterica serovar Typhimurium. A rfaH mutant was constructed by site-directed mutagenesis. This mutant produced a rough lipopolysa...

journal_title：FEMS microbiology letters

authors： Rojas G,Saldías S,Bittner M,Zaldívar M,Contreras I

更新日期：2001-10-16 00:00:00

abstract：:Bradyrhizobium japonicum has two types of flagella. One has thin filaments consisting of the 33-kDa flagellins FliCI and FliCII (FliCI-II) and the other has thick filaments consisting of the 65-kDa flagellins FliC1, FliC2, FliC3, and FliC4 (FliC1-4). To investigate the roles of each flagellum in competition for nodula...

journal_title：FEMS microbiology letters

authors： Althabegoiti MJ,Covelli JM,Pérez-Giménez J,Quelas JI,Mongiardini EJ,López MF,López-García SL,Lodeiro AR

更新日期：2011-06-01 00:00:00

abstract：:We present evidence that the anthrax toxin lethal factor binds multiple zinc atoms. Results from atomic adsorption spectroscopy indicate that lethal factor contains approximately three zinc atoms per toxin molecule. Lethal factor treated with EDTA and o-phenanthroline contained a similar number of zinc atoms, indicati...

journal_title：FEMS microbiology letters

authors： Kochi SK,Schiavo G,Mock M,Montecucco C

更新日期：1994-12-15 00:00:00

abstract：:Nine clinical isolates of Enterobacteriaceae (six Escherichia coli and three Proteus mirabilis) isolated in three Parisian hospitals between 1989 and 2000 showed a particular extended-spectrum cephalosporin-resistance profile characterized by resistance to cefotaxime and aztreonam but not to ceftazidime. CTX-M-1, CTX-...

journal_title：FEMS microbiology letters

authors： Saladin M,Cao VT,Lambert T,Donay JL,Herrmann JL,Ould-Hocine Z,Verdet C,Delisle F,Philippon A,Arlet G

更新日期：2002-04-09 00:00:00

abstract：:Dextranase specifically hydrolyzes dextran and is used to produce functional isomalto-saccharide prebiotics. Moreover, dextranase is used as an additive in mouthwash to remove dental plaque. We cloned and expressed the dextranase gene of the marine bacterium Bacillus aquimaris S5. The length of the BaDex gene was 1788...

journal_title：FEMS microbiology letters

authors： Dong D,Wang X,Deng T,Ning Z,Tian X,Zu H,Ding Y,Wang C,Wang S,Lyu M

更新日期：2021-01-20 00:00:00

abstract：:The genome of Helicobacter pylori 26695 has been sequenced and the lipopolysaccharide (LPS) O sidechain of this strain has been shown to express both Lewis x and Lewis y units. To determine the role of HP0159 and HP1416, genes recognized as rfaJ homologs and implicated in LPS synthesis, isogenic mutants of H. pylori 2...

journal_title：FEMS microbiology letters

authors： Moran AP,Shiberu B,Ferris JA,Knirel YA,Senchenkova SN,Perepelov AV,Jansson PE,Goldberg JB

更新日期：2004-12-01 00:00:00

abstract：:Legionella pneumophila, an intracellular parasite of macrophages and protozoa, requires iron for extra- and intracellular growth. In a new screen of a mutant library of L. pneumophila for strains defective for growth on agar media lacking supplemental iron, seven mutants were obtained. All of the mutants had a disrupt...

journal_title：FEMS microbiology letters

authors： Naylor J,Cianciotto NP

更新日期：2004-12-15 00:00:00

abstract：:Two thermophilic bacteria, which are capable of growing on starch at 60-70 degrees C under anaerobic conditions, were isolated from a sugar refinery in Uelzen and from Solar lake in Israel. On the basis of their physiological characteristics they were identified as Clostridium thermohydrosulfuricum Uel 1 and C. thermo...

journal_title：FEMS microbiology letters

authors： Klingeberg M,Hippe H,Antranikian G

更新日期：1990-05-01 00:00:00

abstract：:Phagemid vectors for display of protein/peptides on the surface of filamentous phage utilize a plasmid genome carrying the phage origin of replication, along with the gene fused to a fragment of gene III. Generation of phage particles displaying the fusion protein also requires superinfection of the host bacterium wit...

journal_title：FEMS microbiology letters

authors： Dueñas M,Borrebaeck CA

更新日期：1995-01-15 00:00:00

abstract：:A solvent-tolerant, slightly thermophilic bacterium was isolated at 45 degrees C in the presence of toluene vapor provided as the sole carbon source. Strain T27 was identified as Deinococcus geothermalis T27. It could tolerate high concentrations of solvent provided as a nonaqueous layer (5% and 20%, v/v) to a cell su...

journal_title：FEMS microbiology letters

authors： Kongpol A,Kato J,Vangnai AS

更新日期：2008-09-01 00:00:00

abstract：:Lyme disease is a multisystemic disorder caused by Borrelia burgdorferi, an invasive spirochete. B. burgdorferi has a predilection for collagenous tissue and one major clinical manifestation of the disease is arthritis. We have identified a collagenolytic activity in B. burgdorferi detergent lysates using iodinated ge...

journal_title：FEMS microbiology letters

authors： Grab DJ,Kennedy R,Philipp MT

更新日期：1996-10-15 00:00:00