DNA supercoiling and suppression of the leu-500 promoter mutation.

abstract：:An increase in the apparent molecular weight of the principal outer membrane protein (POMP) of Neisseria gonorrhoeae is associated with introduction of the penB2 genetic marker, which results in low-level, relatively nonspecific antibiotic resistance. Limited proteolysis of the two forms of POMP showed that they had f...

journal_title：Journal of bacteriology

authors： Cannon JG,Klapper DG,Blackman EY,Sparling PF

更新日期：1980-08-01 00:00:00

abstract：:In Escherichia coli K-12, expression of the lysU gene is regulated by the lrp gene product, as indicated by an increase in the level of lysyl-tRNA synthetase activity and LysU protein in an lrp mutant. Comparison of the patterns of protein expression visualized by two-dimensional gel electrophoresis indicated that Lys...

journal_title：Journal of bacteriology

authors： Lin R,Ernsting B,Hirshfield IN,Matthews RG,Neidhardt FC,Clark RL,Newman EB

更新日期：1992-05-01 00:00:00

abstract：:This study examines certain membrane-related aspects of oxygen poisoning in Escherichia coli K1060 (fabB fadE lacI) and its parent strain, K-12 Ymel. Cells were grown to exponential or stationary phase in a minimal medium and exposed to air plus 300 lb/in2 of O2 as a suspension in minimal salts. After an initial lag, ...

journal_title：Journal of bacteriology

authors： Harley JB,Santangelo GM,Rasmussen H,Goldfine H

更新日期：1978-06-01 00:00:00

abstract：:In Escherichia coli, ClpYQ (HslUV) is a two-component ATP-dependent protease composed of ClpY (HslU), an ATPase with unfolding activity, and ClpQ (HslV), a peptidase. In the ClpYQ proteolytic complex, the hexameric rings of ClpY (HslU) are responsible for protein recognition, unfolding, and translocation into the prot...

journal_title：Journal of bacteriology

authors： Hsieh FC,Chen CT,Weng YT,Peng SS,Chen YC,Huang LY,Hu HT,Wu YL,Lin NC,Wu WF

更新日期：2011-10-01 00:00:00

abstract：:The E. coli RelA protein is a ribosome-dependent (p)ppGpp synthetase that is activated in response to amino acid starvation. RelA can be dissected both functionally and physically into two domains: The N-terminal domain (NTD) (amino acids [aa] 1 to 455) contains the catalytic domain of RelA, and the C-terminal domain ...

journal_title：Journal of bacteriology

authors： Gropp M,Strausz Y,Gross M,Glaser G

更新日期：2001-01-01 00:00:00

abstract：:The penicillin-binding proteins (PBPs) of 209 cell division (or growth) temperature-sensitive mutants of Streptococcus faecium were analyzed in this study. A total of nine strains showed either constitutive or temperature-sensitive conditional damage in the PBPs. Analysis of these nine strains yielded the following re...

journal_title：Journal of bacteriology

authors： Canepari P,Lleò MM,Fontana R,Satta G

更新日期：1987-06-01 00:00:00

abstract：:The gcaD, prs, and ctc genes were shown to be organized as a tricistronic operon. The transcription of the prs gene, measured as phosphoribosyl diphosphate synthetase activity, and of the ctc gene, measured as beta-galactosidase activity specified by a ctc-lacZ protein fusion, were dependent on the promoter in front o...

journal_title：Journal of bacteriology

authors： Hilden I,Krath BN,Hove-Jensen B

更新日期：1995-12-01 00:00:00

abstract：:The conditions for the infection of Bacillus stearothermophilus 4S with TP-1C phage deoxyribonucleic acid (DNA) are described. Cells from log-phase cultures are the most susceptible to phage DNA infection (transfection). A cellular component (competence factor) which enhances transfection is released into the culture ...

journal_title：Journal of bacteriology

authors： Streips UN,Welker NE

更新日期：1971-06-01 00:00:00

abstract：:Cohen, Jay O. (Communicable Disease Center, Atlanta, Ga.), Glenda S. Cowart, and William B. Cherry. Antibodies against Staphylococcus aureus in nonimmunized rabbits. J. Bacteriol. 82:110-114. 1961.-Antibody against staphylococci was demonstrated in the serum of each of 36 nonimmunized specific-pathogen-free rabbits th...

journal_title：Journal of bacteriology

authors： COHEN JO,COWART GS,CHERRY WB

更新日期：1961-07-01 00:00:00

abstract：:Tn2603 is a multiple-resistance transposon encoding resistance to ampicillin, streptomycin, sulfonamide, and mercury and having a molecular size of 20 kilobase pairs, with 200-base-pair inverted repeats at both ends. The essential sites and functions of Tn2603 which are required for its transposition were determined t...

journal_title：Journal of bacteriology

authors： Tanaka M,Harafuji H,Yamamoto T

更新日期：1982-08-01 00:00:00

abstract：:The ASM Conference on Mechanisms of Interbacterial Cooperation and Competition was held in Washington DC, from 1 to 4 March 2017. The conference provided an international forum for sociomicrobiologists from different disciplines to present and discuss new findings. The meeting covered a wide range of topics, spanning ...

journal_title：Journal of bacteriology

authors： Lories B,Parijs I,Foster KR,Steenackers HP

更新日期：2017-08-14 00:00:00

abstract：:The mechanism of action of diphtheria toxin in an Escherichia coli cell-free protein-synthesizing system was examined. When the washed ribosomes were incubated with toxin before addition of messenger ribonucleic acid (RNA), peptide syntheses of (14)C-phenylalanine directed by polyuridylic acid or phage R17 RNA were st...

journal_title：Journal of bacteriology

authors： Tsugawa A,Ohsumi Y,Kato I

更新日期：1970-10-01 00:00:00

abstract：:Ureolytic clinical isolates of Providencia stuartii, Salmonella spp., and some Escherichia coli strains contain large urease-encoding plasmids. Expression of urease activity from these isolates is induced at least 20-fold by urea. In order to facilitate studies on the regulatory mechanism controlling this urea-inducib...

journal_title：Journal of bacteriology

authors： D'Orazio SE,Collins CM

更新日期：1993-06-01 00:00:00

abstract：:The biochemical basis for the acquired or natural resistance of various gram-positive organisms to glycopeptides was studied by high-pressure liquid chromatographic analysis of their peptidoglycan UDP-MurNAc-peptide precursors. In all cases, resistance was correlated with partial or complete replacement of the C-termi...

journal_title：Journal of bacteriology

authors： Billot-Klein D,Gutmann L,Sablé S,Guittet E,van Heijenoort J

更新日期：1994-04-01 00:00:00

abstract：:The broad-host-range IncP plasmids RP4, R68.45, RP1::Tn501, and pUB307 were transferred to acidophilic, obligately chemolithotrophic Thiobacillus ferrooxidans from Escherichia coli by conjugation. A genetic marker of kanamycin resistance was expressed in T. ferrooxidans. Plasmid RP4 was transferred back to E. coli fro...

journal_title：Journal of bacteriology

authors： Peng JB,Yan WM,Bao XZ

更新日期：1994-05-01 00:00:00

abstract：:Azotobacter vinelandii DJ71, which contains a mutation in the nifV gene, was derepressed for nitrogenase in the presence of homocitrate. When dinitrogenase was isolated from this culture, it was found to be identical to the wild-type dinitrogenase. However, when the same NifV- strain was derepressed in the presence of...

journal_title：Journal of bacteriology

authors： Madden MS,Paustian TD,Ludden PW,Shah VK

更新日期：1991-09-01 00:00:00

abstract：:The draft genome sequence (4,398,155 bp, with 65.35% G+C content) of Halobiforma lacisalsi AJ5, an extremely halophilic archaeon isolated from a salt lake, is reported here. This is the first genome report for a species of the Halobiforma genus. ...

journal_title：Journal of bacteriology

authors： Jiang X,Wang S,Cheng H,Huo Y,Zhang X,Zhu X,Han X,Ni P,Wu M

更新日期：2011-12-01 00:00:00

abstract：:Uncoupled enzyme IIGlc of the phosphoenolpyruvate (PEP):glucose phosphotransferase system (PTS) in Salmonella typhimurium is able to catalyze glucose transport in the absence of PEP-dependent phosphorylation. As a result of the ptsG mutation, the apparent Km of the system for glucose transport is increased about 1,000...

journal_title：Journal of bacteriology

authors： Ruijter GJ,Postma PW,van Dam K

更新日期：1990-09-01 00:00:00

abstract：:The direction of chromosome replication in a temperature-sensitive initiation mutant of Escherichia coli (CT28) is shown autoradiographically to be bidirectional. This mode of replication persists even when the rate of replication is reduced by slow growth in succinate minimal medium or in the presence of chlorampheni...

journal_title：Journal of bacteriology

authors： Rodriguez RL,Davern CI

更新日期：1976-01-01 00:00:00

abstract：:Electron cryotomography was used to analyze the structure of the Lyme disease spirochete, Borrelia burgdorferi. This methodology offers a new means for studying the native architecture of bacteria by eliminating the chemical fixing, dehydration, and staining steps of conventional electron microscopy. Using electron cr...

journal_title：Journal of bacteriology

authors： Charon NW,Goldstein SF,Marko M,Hsieh C,Gebhardt LL,Motaleb MA,Wolgemuth CW,Limberger RJ,Rowe N

更新日期：2009-01-01 00:00:00

abstract：:The Salmonella typhimurium pi-histidine episome was identified by Ames et al. (2) in an unstable partial revertant of a deletion mutation-containing strain, hisG203. HisG203 lacks the histidine operator, promoter, and part of the first structural gene. In this paper, we study some properties of pi factor and demonstra...

journal_title：Journal of bacteriology

authors： Levinthal M,Yeh J

更新日期：1972-03-01 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：:A total of 12 VanA-type vancomycin-resistant enterococci, consisting of 10 Enterococcus faecium isolates and two Enterococcus avium isolates, were examined in detail. The vancomycin resistance conjugative plasmids pHTalpha (65.9 kbp), pHTbeta (63.7 kbp), and pHTgamma (66.5 kbp) were isolated from each of three differe...

journal_title：Journal of bacteriology

authors： Tomita H,Tanimoto K,Hayakawa S,Morinaga K,Ezaki K,Oshima H,Ike Y

更新日期：2003-12-01 00:00:00

abstract：:The lasA gene (whose product is involved in the production of extracellular elastolytic activity) was isolated from a genomic bank containing DNA from Pseudomonas aeruginosa FRD1. Recombinant plasmid pELA1, containing the lasA gene, complemented the temperature-sensitive elastase mutation (lasA1) in P. aeruginosa PAO-...

journal_title：Journal of bacteriology

authors： Goldberg JB,Ohman DE

更新日期：1987-03-01 00:00:00

abstract：:A 12.6-kb DNA fragment from Streptomyces glaucescens GLA.0 containing the 12 genes for tetracenomycin (TCM) C biosynthesis and resistance enabled Streptomyces lividans to produce TCM C. Transcriptional analysis of the tcmPG intergenic region in this cluster established the presence of two divergent promoters. The tcmI...

journal_title：Journal of bacteriology

authors： Decker H,Hutchinson CR

更新日期：1993-06-01 00:00:00

abstract：:Five lacY mutants with amber stop codons at known positions were each placed into 12 different suppressor strains. The 60 amino acid substitutions obtained in this manner were tested for growth on lactose-minimal medium plates and for transport of lactose, melibiose, and thiomethylgalactoside. Most of the amino acid s...

journal_title：Journal of bacteriology

authors： Huang AM,Lee JI,King SC,Wilson TH

更新日期：1992-08-01 00:00:00

abstract：:Protein and mRNA levels of heat-labile enterotoxin (LT) of Escherichia coli are highest at 37 degrees C, and they decrease gradually as temperature is decreased. This temperature effect is eliminated in an Hns- mutant. Deletion of portions of DNA coding for the LT A subunit also results in an increase in LT expression...

journal_title：Journal of bacteriology

authors： Trachman JD,Maas WK

更新日期：1998-07-01 00:00:00

abstract：:The electron transport system of Acinetobacter sp. HO1-N was studied to determine the specific cytochromes and to measure changes in the composition of the respiratory system due to growth in various concentrations of oxygen or types of growth substrates. Spectrophotometric analysis revealed that the quantity and type...

journal_title：Journal of bacteriology

authors： Ensley BD Jr,Finnerty WR

更新日期：1980-06-01 00:00:00

abstract：:Upon exposure to alkylating agents, Escherichia coli increases expression of aidB along with three genes (ada, alkA, and alkB) that encode DNA repair proteins. While the biological roles of the Ada, AlkA, and AlkB proteins have been defined, despite many efforts, the molecular functions of AidB remain largely unknown....

journal_title：Journal of bacteriology

authors： Rippa V,Amoresano A,Esposito C,Landini P,Volkert M,Duilio A

更新日期：2010-12-01 00:00:00

abstract：:Banerjee, Arun B. (University of Calcutta, Calcutta, India), and S. K. Bose. Biosynthesis of mycobacillin, a new antifungal peptide. II. Relation between streptomycin dependence and biosynthesis. J. Bacteriol. 87:1402-1405. 1964.-A streptomycin-dependent variant was isolated by a single-step mutation process from a st...

journal_title：Journal of bacteriology

authors： BANERJEE AB,BOSE SK

更新日期：1964-06-01 00:00:00