Induction of mutants of Staphylococcus aureus 100 with increased ability to produce enterotoxin A.

abstract：:IS630 is a 1.15-kilobase sequence in Shigella sonnei that, unlike many mobile elements, seems not to mediate cointegration between different replicons. To assess its transposition, we constructed composite elements containing inverted copies of IS630 flanking a drug resistance gene. We found that these composite eleme...

journal_title：Journal of bacteriology

authors： Tenzen T,Matsutani S,Ohtsubo E

更新日期：1990-07-01 00:00:00

abstract：UNLABELLED:Ileal lesions of patients with Crohn's disease are colonized by adherent-invasive Escherichia coli (AIEC), which is able to adhere to and to invade intestinal epithelial cells (IEC), to replicate within macrophages, and to form biofilms on the surface of the intestinal mucosa. Previous analyses indicated the...

journal_title：Journal of bacteriology

authors： Chassaing B,Garénaux E,Carriere J,Rolhion N,Guérardel Y,Barnich N,Bonnet R,Darfeuille-Michaud A

更新日期：2015-04-01 00:00:00

abstract：:While coagulase-negative staphylococci (CoNS), with their ability to form a thick, multilayered biofilm on foreign bodies, have been identified as the major cause of implant-associated infections, no data are available about biofilm formation by staphylococcal small-colony variants (SCVs). In the past years, a number ...

journal_title：Journal of bacteriology

authors： Al Laham N,Rohde H,Sander G,Fischer A,Hussain M,Heilmann C,Mack D,Proctor R,Peters G,Becker K,von Eiff C

更新日期：2007-06-01 00:00:00

abstract：:The gene encoding Neisseria gonorrhoeae periplasmic binding protein FbpA contains two regions whose sequences exhibit homology with the Escherichia coli ferric uptake regulator protein (Fur) consensus binding sequence. In this study, DNase I footprinting experiments were employed to characterize the operator sequences...

journal_title：Journal of bacteriology

authors： Desai PJ,Angerer A,Genco CA

更新日期：1996-08-01 00:00:00

abstract：:Acidic hot springs are colonized by a diversity of hyperthermophilic organisms requiring extremes of temperature and pH for growth. To clarify how carbohydrates are consumed in such locations, the structural gene (malA) encoding the major soluble alpha-glucosidase (maltase) and flanking sequences from Sulfolobus solfa...

journal_title：Journal of bacteriology

authors： Rolfsmeier M,Haseltine C,Bini E,Clark A,Blum P

更新日期：1998-03-01 00:00:00

abstract：:Incubation of whole envelopes prepared from sonically oscillated Escherichia coli K-12 cultures with lysozyme in vitro resulted in the appearance of a protein species with an apparent molecular weight double that of outer membrane protein I. Similar dimers were also detected in purified outer membranes and whole envel...

journal_title：Journal of bacteriology

authors： Chopra I,Howe GB,Ball PR

更新日期：1977-11-01 00:00:00

abstract：:In order to study the Salmonella typhimurium cobalamin biosynthetic pathway, the S. typhimurium cob operon was isolated and cloned into Escherichia coli. This approach has given the new host of the cob operon the ability to make cobalamins de novo, an ability that had probably been lost by this organism. In total, 20 ...

journal_title：Journal of bacteriology

authors： Raux E,Lanois A,Levillayer F,Warren MJ,Brody E,Rambach A,Thermes C

更新日期：1996-02-01 00:00:00

abstract：:Staphylococcus aureus responds with protective strategies against phagocyte-derived reactive oxidants to infect humans. Herein, we report the transcriptome analysis of the cellular response of S. aureus to hydrogen peroxide-induced oxidative stress. The data indicate that the oxidative response includes the induction ...

journal_title：Journal of bacteriology

authors： Chang W,Small DA,Toghrol F,Bentley WE

更新日期：2006-02-01 00:00:00

abstract：:An exo-beta-1,4-glucanase (Exo A) from Ruminococcus flavefaciens FD-1 was purified to homogeneity and characterized. Enzyme activity was monitored during purification by using the substrate p-nitrophenyl-beta-D-cellobioside (NPC). Over 85% of the NPC activity was found to be extracellular once the filter paper was deg...

journal_title：Journal of bacteriology

authors： Gardner RM,Doerner KC,White BA

更新日期：1987-10-01 00:00:00

abstract：:The protein SpoIVB plays a key role in signaling in the final sigma(K) checkpoint of Bacillus subtilis. This regulatory mechanism coordinates late gene expression during development in this organism and we have recently shown SpoIVB to be a serine peptidase. SpoIVB signals by transiting a membrane, undergoing self-cle...

journal_title：Journal of bacteriology

authors： Hoa NT,Brannigan JA,Cutting SM

更新日期：2002-01-01 00:00:00

abstract：:The highly purified lipoprotein of the outer membrane of Escherichia coli forms paracrystals. The ultrastructures of these paracrystals were examined by electron microscopy. The needle-shaped paracrystals show several different band patterns, depending on conditions of paracrystallization. Models are presented to expl...

journal_title：Journal of bacteriology

authors： DeMartini M,Inouye S,Inouye M

更新日期：1976-07-01 00:00:00

abstract：:Sphingobium japonicum UT26 utilizes gamma-hexachlorocyclohexane (gamma-HCH) as its sole source of carbon and energy. In our previous studies, we cloned and characterized genes encoding enzymes for the conversion of gamma-HCH to beta-ketoadipate in UT26. In this study, we analyzed a mutant obtained by transposon mutage...

journal_title：Journal of bacteriology

authors： Endo R,Ohtsubo Y,Tsuda M,Nagata Y

更新日期：2007-05-01 00:00:00

abstract：:Mycoplasma iowae is associated mainly with reduced hatchability in turkeys and is well known for the unusual ability of phenotypic variation in the Mycoplasma surface components as well as a relative resistance to heat, bile salts, and many antimicrobials. A subset of unique genes and a gene cluster responsible for th...

journal_title：Journal of bacteriology

authors： Wei S,Guo Z,Li T,Zhang T,Li X,Zhou Z,Li Z,Liu M,Luo R,Bi D,Chen H,Zhou R,Jin H

更新日期：2012-01-01 00:00:00

abstract：:Valentine, R. C. (University of Illinois, Urbana), H. Drucker, and R. S. Wolfe. Glyoxylate fermentation by Streptococcus allantoicus. J. Bacteriol. 87:241-246. 1964.-Extracts of Streptococcus allantoicus were found to degrade glyoxylate, yielding tartronic semialdehyde and CO(2). Tartronic semialdehyde was prepared ch...

journal_title：Journal of bacteriology

authors： VALENTINE RC,DRUCKER H,WOLFE RS

更新日期：1964-02-01 00:00:00

abstract：:The steps in the biosynthetic transformation of GTP to 7,8-dihydro-D-erythro-neopterin (H2neopterin), the precursor to the modified folates found in the methanogenic archaea, has been elucidated for the first time in two members of the domain Archaea. In Methanococcus thermophila and Methanobacterium thermoautotrophic...

journal_title：Journal of bacteriology

authors： Howell DM,White RH

更新日期：1997-08-01 00:00:00

abstract：:Very little is known about the role of DNA repair networks in Brucella abortus and its role in pathogenesis. We investigated the roles of RecA protein, DNA repair, and SOS regulation in B. abortus. While recA mutants in most bacterial species are hypersensitive to UV damage, surprisingly a B. abortus recA null mutant ...

journal_title：Journal of bacteriology

authors： Roux CM,Booth NJ,Bellaire BH,Gee JM,Roop RM 2nd,Kovach ME,Tsolis RM,Elzer PH,Ennis DG

更新日期：2006-07-01 00:00:00

abstract：:The gene encoding sigmaD, sigD, is transcribed from two promoter regions, the fla/che promoter region in front of the fla/che operon and PsigD directly in front of sigD. If sigmaD is translated from transcripts originating from PsigD, the cell is unable to express motility functions but synthesizes autolysins. Therefo...

journal_title：Journal of bacteriology

authors： Yang DH,von Kalckreuth J,Allmansberger R

更新日期：1999-05-01 00:00:00

abstract：:A series of electron micrographs showing the presence of different molecular forms representing various replication stages of plasmid deoxyribonucleic acid from Streptomyces griseus was obtained. Based upon an analysis of these electron micrographs, a tentative model for plasmid deoxyribonucleic acid replication in S....

journal_title：Journal of bacteriology

authors： Xue Y,Zhuang Z,Zhu Y,Xu Y,Dong K

更新日期：1981-04-01 00:00:00

abstract：:Using representational difference analysis, we isolated novel meningococcal restriction-modification (R-M) systems. NmeBI, which is a homologue of the R-M system HgaI of Pasteurella volantium, was present in meningococci of the ET-5 complex and of lineage III. NmeAI was found in serogroup A, ET-37 complex, and cluster...

journal_title：Journal of bacteriology

authors： Claus H,Friedrich A,Frosch M,Vogel U

更新日期：2000-03-01 00:00:00

abstract：:The kinetics of chromosome replication and cell division have been examined in recA mutants of Escherichia coli B/r containing F' plasmids of various sizes. Plasmid-mediated alterations in growth properties were detected only with the presence of the larger F' plasmids, and were reflected in decreased mean cell sizes ...

journal_title：Journal of bacteriology

authors： Weinberger M,Helmstetter CE

更新日期：1979-03-01 00:00:00

abstract：:Escherichia coli K-12 strain CU1008 cannot use L-serine as the sole carbon source, but it could use L-serine as an auxiliary carbon source with glucose, L-alanine, or pyruvate and could derive energy from L-serine to support oxygen uptake. CU1008 grew with L-serine if it was also provided with glycine and leucine. The...

journal_title：Journal of bacteriology

authors： Newman EB,Walker C

更新日期：1982-08-01 00:00:00

abstract：:Unlike the great majority of the aerobactin-producing enteric bacteria documented in the literature, Enterobacter cloacae EK33, isolated from a case of human neonatal meningitis, did not show any homology at the DNA level with the prototype aerobactin system encoded by the ColV-K30 plasmid. However, both the nuclear m...

journal_title：Journal of bacteriology

authors： Crosa LM,Wolf MK,Actis LA,Sanders-Loehr J,Crosa JH

更新日期：1988-12-01 00:00:00

abstract：:Strains of Lactobacillus casei subsp. rhamnosus possessing two cell wall polysaccharides, a hexosamine-containing H-polysaccharide and a rhamnose-containing R-polysaccharide, were examined for the effect of growth conditions on the production of these two components. In strain NCTC 6375, R- and H-polysaccharides accou...

journal_title：Journal of bacteriology

authors： Wicken AJ,Ayres A,Campbell LK,Knox KW

更新日期：1983-01-01 00:00:00

abstract：:Trehalose was found to be utilized more readily than glucose for the growth of Bacillus popilliae NRRL B-2309MC. The pathway of degradation of trehalose was elucidated and found to differ from that reported for other organisms. Trehalase and trehalose phosphorylase activities could not be detected. Rather, trehalose w...

journal_title：Journal of bacteriology

authors： Bhumiratana A,Anderson RL,Costilow RN

更新日期：1974-08-01 00:00:00

abstract：:The regulation of Agrobacterium tumefaciens heat shock genes involves a transcriptional activator (RpoH) and repressor elements (HrcA-CIRCE). Using proteome analysis and mutants in these control elements, we show that the heat shock induction of 32 (out of 56) heat shock proteins is independent of RpoH and HrcA. These...

journal_title：Journal of bacteriology

authors： Rosen R,Büttner K,Becher D,Nakahigashi K,Yura T,Hecker M,Ron EZ

更新日期：2002-03-01 00:00:00

abstract：:Overproduction of tryptophanyl-tRNA synthetase increased trp operon expression by reducing transcription termination at the trp attenuator. The total cellular level of charged tRNATrp was not affected by increased levels of the synthetase. We propose that excess synthetase binds charged tRNATrp and reduces the concent...

journal_title：Journal of bacteriology

authors： Das A,Yanofsky C

更新日期：1984-11-01 00:00:00

abstract：:A strain of Neurospora crassa defective in amino acid transport can utilize a variety of amino acids for growth when readily metabolizable nitrogen is limiting. Growth is accompanied by the production of an extracellular deaminase that converts the amino acid to its respective keto acid plus equimolar quantities of ut...

journal_title：Journal of bacteriology

authors： DeBusk RM,Ogilvie S

更新日期：1984-08-01 00:00:00

abstract：:Expression of virulence factors by Bordetella pertussis is altered by environmental signals (antigenic modulation) and is dependent on an activator encoded by a gene called vir. We have used TnphoA (Tn5 IS50L::phoA) gene fusions to define two sets of genes whose expression is either activated (vag loci) or repressed (...

journal_title：Journal of bacteriology

authors： Knapp S,Mekalanos JJ

更新日期：1988-11-01 00:00:00

abstract：:The nucleotide sequence of the Escherichia coli colicin I receptor gene (cir) has been determined. The predicted mature protein consists of 599 amino acids and has a molecular weight of 67,169. Several previously noted characteristics of other E. coli outer membrane protein sequences were also identified in the sequen...

journal_title：Journal of bacteriology

authors： Nau CD,Konisky J

更新日期：1989-02-01 00:00:00

abstract：:Target analyses of the induction of rho(-) mutants indicated that the cytoplasm of an aerobic nonrepressed yeast contains approximately 20 mutable units, whereas repressed cells exhibit approximately 3. Aerobic adaptation of fully repressed cells brings about an increase in these cytoplasmic units which continues afte...

journal_title：Journal of bacteriology

authors： Allen NE,MacQuillan AM

更新日期：1969-03-01 00:00:00