Population genetic analysis of Helicobacter pylori by multilocus enzyme electrophoresis: extensive allelic diversity and recombinational population structure.

abstract：:Falcone, Giuseppe (Rutgers, The State University, New Brunswick, N.J.), and Walter J. Nickerson. Reduction of selenite by intact yeast cells and cell-free preparations. J. Bacteriol. 85:754-762. 1963.-Nonproliferating cell suspensions of Candida albicans rapidly reduced selenite to red, metallic selenium in the absenc...

journal_title：Journal of bacteriology

authors： FALCONE G,NICKERSON WJ

更新日期：1963-04-01 00:00:00

abstract：:Melanin production is a major virulence factor for Cryptococcus neoformans, an organism causing life-threatening infections in an estimated 10% of AIDS patients. In order to characterize the events involved in melanin synthesis, an enzyme having diphenol oxidase activity was purified and its gene was cloned. The enzym...

journal_title：Journal of bacteriology

authors： Williamson PR

更新日期：1994-02-01 00:00:00

abstract：:Klebsiella strain RE1544 contains two lac operons, one on the chromosome and one on a lac plasmid. A mutant of RE1544, in which the lacZ genes of both operons produce no active enzyme, was found to synthesize a beta-galactosidase that hydrolyzes ortho-nitrophenyl-beta-D-galactopyranoside but not lactose. Synthesis of ...

journal_title：Journal of bacteriology

authors： Hall BG,Reeve EC

更新日期：1977-10-01 00:00:00

abstract：:Pigmentation mutants of Pseudomonas aeruginosa, selected by observed visual differences in coloration from the wild-type strain, were examined for altered patterns of phenazine synthesis. Three classes of mutants that were incapable of pyocyanine production were identified. Pigmentation patterns that were found to cha...

journal_title：Journal of bacteriology

authors： Byng GS,Eustice DC,Jensen RA

更新日期：1979-06-01 00:00:00

abstract：:Quorum sensing of Sinorhizobium meliloti relies on N-acyl-homoserine lactones (AHLs) as autoinducers. AHL production increases at high population density, and this depends on the AHL synthase SinI and two transcriptional regulators, SinR and ExpR. Our study demonstrates that ectopic expression of the gene rne, coding ...

journal_title：Journal of bacteriology

authors： Baumgardt K,Charoenpanich P,McIntosh M,Schikora A,Stein E,Thalmann S,Kogel KH,Klug G,Becker A,Evguenieva-Hackenberg E

更新日期：2014-04-01 00:00:00

abstract：:Lipoprotein anchoring in bacteria is mediated by the prolipoprotein diacylglyceryl transferase (Lgt), which catalyzes the transfer of a diacylglyceryl moiety to the prospective N-terminal cysteine of the mature lipoprotein. Deletion of the lgt gene in the gram-positive pathogen Listeria monocytogenes (i) impairs intra...

journal_title：Journal of bacteriology

authors： Baumgärtner M,Kärst U,Gerstel B,Loessner M,Wehland J,Jänsch L

更新日期：2007-01-01 00:00:00

abstract：:This article contains an analysis of a version of the well-known inhibitor-dilution model for the control of initiation of chromosome replication in bacteria. According to this model, an unstable inhibitor interacts with an initiation primer in a hit-and-destroy fashion to prevent successful initiation; both constitue...

journal_title：Journal of bacteriology

authors： Margalit H,Grover NB

更新日期：1987-11-01 00:00:00

abstract：:Welker, N. E. (University of Illinois, Urbana), and L. Leon Campbell. Biochemical changes in lysogenic Bacillus stearothermophilus after bacteriophage induction. J. Bacteriol. 90:1129-1137. 1965.-Cultures of Bacillus stearothermophilus 1503-4R (TP-1) continued to grow at an unaltered rate after induction with mitomyci...

journal_title：Journal of bacteriology

authors： Welker NE,Campbell LL

更新日期：1965-10-01 00:00:00

abstract：:When cells of Escherichia coli THU were starved for thymine, they continued to grow without division for at least two successive volume doublings at their initial rate. Within experimental error this average rate of volume increase, 0.21 mum(3) per hr, was identical with that observed in control cultures during two ge...

journal_title：Journal of bacteriology

authors： Kubitschek HE

更新日期：1971-02-01 00:00:00

abstract：:In contrast to previous findings, we demonstrate that the dissimilatory (bi)sulfite reductase genes (dsrAB) of Desulfobacula toluolica were vertically inherited. Furthermore, Desulfobacterium anilini and strain mXyS1 were identified, by dsrAB sequencing of 17 reference strains, as members of the donor lineage for thos...

journal_title：Journal of bacteriology

authors： Zverlov V,Klein M,Lücker S,Friedrich MW,Kellermann J,Stahl DA,Loy A,Wagner M

更新日期：2005-03-01 00:00:00

abstract：:The mannans of Saccharomyces chevalieri, S. italicus, S. diastaticus, and S. carlsbergensis, were acetolyzed, and the fragments were separated by gel filtration. All gave similar acetolysis fingerprints, which were distinguished from S. cerevisiae by the presence of a pentasaccharide component in addition to the mono-...

journal_title：Journal of bacteriology

authors： Ballou CE,Lipke PN,Raschke WC

更新日期：1974-02-01 00:00:00

abstract：:The nif promoters of Klebsiella pneumoniae must be activated by proteins bound to upstream sequences which are thought to interact with the sigma54-RNA polymerase holoenzyme by DNA looping. NifA is the activator for most of the promoters, and integration host factor (IHF) mediates the DNA looping. While NtrC is the ac...

journal_title：Journal of bacteriology

authors： Cheema AK,Choudhury NR,Das HK

更新日期：1999-09-01 00:00:00

abstract：:Two types of mutants unable to excrete hemolysin were obtained when E. coli 5K carrying the multicopy hemolytic recombinant plasmid pANN202-312 was mutagenized with Mu d1. One type is altered in the plasmid hly-specific gene, hlyBb, but the other is caused by an insertion of Mu d1 into a chromosomal locus. ...

journal_title：Journal of bacteriology

authors： Juarez A,Goebel W

更新日期：1984-09-01 00:00:00

abstract：:The imp genes, responsible for the UV protection and mutation effects of the I incompatibility group plasmid TP110, have been cloned into vector plasmids, and their products have been analyzed. The genetic information required for expression of these properties was carried in a continuous DNA sequence of approximately...

journal_title：Journal of bacteriology

authors： Glazebrook JA,Grewal KK,Strike P

更新日期：1986-10-01 00:00:00

abstract：:A strain of Pseudomonas (P. putida HS1) was found to resemble P. putida (arvilla) mt-2 in its ability to degrade toluene, m- and p-xylene, 1,2,4-trimethylbenzene (pseudocumene), and 3-ethyltoluene via oxidation of a methyl substituent and reactions of the meta-fission pathway. The ability to degrade these substrates b...

journal_title：Journal of bacteriology

authors： Kunz DA,Chapman PJ

更新日期：1981-06-01 00:00:00

abstract：:Host range mutants of phage T1 (T1h), which productively infected tonB mutants of Escherichia coli, were isolated. The phage mutants were inactivated by isolated outer membranes of E. coli in contrast to the wild-type phage, which only adsorbed reversibly. For the infection process, the tonB function is apparently onl...

journal_title：Journal of bacteriology

authors： Hantke K,Braun V

更新日期：1978-07-01 00:00:00

abstract：:Phosphorylation of a major 57-kilodalton protein substrate was observed in cell lysates of Spiroplasma melliferum BC3 incubated with [gamma-32P]ATP. Only serine phosphates have been isolated from the acid hydrolysate of the phosphorylated protein. The 57-kilodalton protein substrate was found, to a large extent, in th...

journal_title：Journal of bacteriology

authors： Platt MW,Reizer J,Rottem S

更新日期：1990-05-01 00:00:00

abstract：:Previous studies have implicated glutamine synthetase (L-glutamate:ammonia ligase [adenosine diphosphate for-ing], EC 6.6.1.2) as a major controlling element of the nitrogen fixation (nif) genes in Klebsiella pneumoniae. We report here the isolation of a new class of K. pneumoniae mutants which exhibit altered pattern...

journal_title：Journal of bacteriology

authors： Ausubel FM,Bird SC,Durbin KJ,Janssen KA,Margolskee RF,Peskin AP

更新日期：1979-11-01 00:00:00

abstract：:The response of Salmonella typhimurium to various forms of environmental stress was examined by using O'Farrell two-dimensional gel electrophoresis. Polypeptides (a total of 110) which quantitatively increased during various starvations, anaerobiosis, or heat shock were identified and cataloged in reference to a stand...

journal_title：Journal of bacteriology

authors： Spector MP,Aliabadi Z,Gonzalez T,Foster JW

更新日期：1986-10-01 00:00:00

abstract：:CatR, a LysR family protein, positively regulates the Pseudomonas putida catBC operon, which is required for growth on benzoate as a sole carbon source. Transcriptional studies show that the catR and catBC promoters are divergent and overlapping by 2 bp. A beta-galactosidase promoter probe vector was constructed to an...

journal_title：Journal of bacteriology

authors： Rothmel RK,Shinabarger DL,Parsek MR,Aldrich TL,Chakrabarty AM

更新日期：1991-08-01 00:00:00

abstract：:Genes involved in the biosynthesis of leucine have been mapped in Bacillus megaterium QM B1551, using transducing phage MP13. Mutations were designated leuA, leuB, or leuC on the basis of enzyme assays. Two mutant strains were deficient in the enzyme activities of leuA (alpha-isopropylmalate synthase) and leuC (beta-i...

journal_title：Journal of bacteriology

authors： Garbe JC,Hess GF,Franzen MA,Vary PS

更新日期：1984-02-01 00:00:00

abstract：:Hg2+-resistant mutants were isolated from Saccharomyces cerevisiae. Although they were very much like the parental strains in terms of colony-forming ability, they grew faster than the parental strains in the presence of sublethal doses of Hg2+. The Hg2+-resistant mutations were dominant. They were centromere linked a...

journal_title：Journal of bacteriology

authors： Ono B,Ohue H,Ishihara F

更新日期：1988-12-01 00:00:00

abstract：:Group A streptococcus (GAS) produces millions of infections worldwide, including mild mucosal infections, postinfection sequelae, and life-threatening invasive diseases. During infection, GAS readily acquires nutritional iron from host heme and hemoproteins. Here, we identified a new heme importer, named SiaFGH, and i...

journal_title：Journal of bacteriology

authors： Chatterjee N,Cook LCC,Lyles KV,Nguyen HAT,Devlin DJ,Thomas LS,Eichenbaum Z

更新日期：2020-06-25 00:00:00

abstract：:During the transition from a free-swimming, single-cell lifestyle to a sessile, multicellular state called a biofilm, bacteria produce and secrete an extracellular matrix comprised of nucleic acids, exopolysaccharides, and adhesion proteins. The Vibrio cholerae biofilm matrix contains three major protein components, R...

journal_title：Journal of bacteriology

authors： Giglio KM,Fong JC,Yildiz FH,Sondermann H

更新日期：2013-07-01 00:00:00

abstract：:Activities of gamma-butyrobetaine hydroxylase and carnitine dehydrogenase were low in cells of Pseudomonas sp. AK 1 grown in the absence of their respective substrates. ...

journal_title：Journal of bacteriology

authors： Lindstedt G,Lindstedt S,Midtvedt T,Tofft M

更新日期：1970-03-01 00:00:00

abstract：:Analysis of two virulence mutants of Pseudomonas syringae B728a revealed that the Tn 5 sites of insertion were within the gidA open reading frame (ORF). These mutations were pleiotropic, affecting diverse phenotypic traits, such as lipodepsipeptide (syringomycin and syringopeptin) antibiotic production, swarming, pres...

journal_title：Journal of bacteriology

authors： Kinscherf TG,Willis DK

更新日期：2002-04-01 00:00:00

abstract：:Ultrastructural and biochemical studies of a recombinant Treponema pallidum surface antigen designated 4D have been conducted due to its likely biological significance. Electron microscopy demonstrated that the 190-kilodalton (kDa) 4D molecule is an ordered ring structure of 10-nm diameter. The 90-kDa proteinase K-tre...

journal_title：Journal of bacteriology

authors： Fehniger TE,Radolf JD,Lovett MA

更新日期：1986-03-01 00:00:00

abstract：:Transcription of an aqpZ-lac fusion in a single copy on the Escherichia coli chromosome increased as cells entered the stationary growth phase. This was true in a variety of media, and increased transcription in enriched medium required the RpoS sigma factor. Expression of the aqpZ-lac fusion was not affected by up- o...

journal_title：Journal of bacteriology

authors： Soupene E,King N,Lee H,Kustu S

更新日期：2002-08-01 00:00:00

abstract：:Previously, we demonstrated that Escherichia coli tolC mutations reduce the high-level resistance to tetracycline afforded by the transposon Tn10-encoded TetA pump from resistance at 200 microg/ml to resistance at 40 microg/ml. In this study, we found that the addition of an sbmA mutation to a tolC::Tn10 mutant exacer...

journal_title：Journal of bacteriology

authors： de Cristóbal RE,Vincent PA,Salomón RA

更新日期：2008-02-01 00:00:00

abstract：:An ultraviolet (UV)-sensitive mutator gene, mutU, was identified in Escherichia coli K-12. The mutation mutU4 is very close to uvrD, between metE and ilv, on the E. coli chromosome. It was recessive as a mutator and as a UV-sensitive mutation. The frequency of reversion of trpA46 on an F episome was increased by mutU4...

journal_title：Journal of bacteriology

authors： Siegel EC

更新日期：1973-01-01 00:00:00