Mutations which affect the structure and activity of colicin E3.

abstract：:Fundamental questions in bacterial gene regulation concern how multiple regulatory proteins interact with the transcription apparatus at a single promoter and what are the roles of protein contacts with RNA polymerase and changes in DNA conformation. Transcription of the Escherichia coli uhpT gene, encoding the induci...

journal_title：Journal of bacteriology

authors： Olekhnovich IN,Kadner RJ

更新日期：1999-12-01 00:00:00

abstract：:Chimeric plasmids, which were useful as cloning vehicles in a Streptococcus sanguis (Challis) host vector system, have been constructed. By using three different strategies of restriction endonuclease digestion and ligation, a deoxyribonucleic acid (DNA) fragment bearing an erythromycin resistance determinant was liga...

journal_title：Journal of bacteriology

authors： Macrina FL,Jones KR,Wood PH

更新日期：1980-09-01 00:00:00

abstract：:Pakula, Roman (University of Toronto, Toronto, Ontario, Canada). Factors regulating competence in transformation of streptococci. J. Bacteriol. 90:1320-1324. 1965.-The highly transformable group H Streptococcus strain Challis produced an exocellular competence-provoking enzyme capable of converting to the state of com...

journal_title：Journal of bacteriology

authors： Pakula R

更新日期：1965-11-01 00:00:00

abstract：:An examination of the methanofurans isolated from a wide range of methanogenic bacteria and from Archaeoglobus fulgidus has revealed at least five chromatographically distinct methanofurans. Bacteria from each major genus of methanogenic bacteria have been found to contain a chemically different methanofuran. The natu...

journal_title：Journal of bacteriology

authors： White RH

更新日期：1988-10-01 00:00:00

abstract：:Caldwell, D. R. (U.S. Department of Agriculture, Beltsville, Md.), D. C. White, M. P. Bryant, and R. N. Doetsch. Specificity of the heme requirement for growth of Bacteroides ruminicola. J. Bacteriol. 90:1645-1654. 1965.-Previous studies suggested that most strains of Bacteroides ruminicola subsp. ruminicola require h...

journal_title：Journal of bacteriology

authors： Caldwell DR,White DC,Bryant MP,Doetsch RN

更新日期：1965-12-01 00:00:00

abstract：:Cells of Ureaplasma urealyticum that were prepared by a ruthenium red technique demonstrated an extramembranous layer of polyanions of about 15 to 30 nm in width. Application of the concanavalin A-iron dextran strain indicated that the outer surface of this layer contained glucosyl-like residues. ...

journal_title：Journal of bacteriology

authors： Robertson J,Smook E

更新日期：1976-11-01 00:00:00

abstract：:ZmaR is a resistance determinant of unusual abundance in the environment and confers on gram-positive and gram-negative bacteria resistance to zwittermicin A, a novel broad-spectrum antibiotic produced by species of Bacillus. The ZmaR protein has no sequence similarity to proteins of known function; thus, the purpose ...

journal_title：Journal of bacteriology

authors： Stohl EA,Brady SF,Clardy J,Handelsman J

更新日期：1999-09-01 00:00:00

abstract：:In Salmonella enterica serovar Typhimurium a mutation in the purF gene encoding the first enzyme in the purine pathway blocks, besides the synthesis of purine, the synthesis of thiamine when glucose is used as the carbon source. On carbon sources other than glucose, a purF mutant does not require thiamine, since the a...

journal_title：Journal of bacteriology

authors： Björk GR,Nilsson K

更新日期：2003-02-01 00:00:00

abstract：:The structure and composition of the cell walls of hyphae of Neurospora crassa were investigated by electron microscopy, chemical analysis, and X-ray diffraction both before and after progressive enzymatic degradation by snail gut enzymes, chitinase, and trypsin. The wall consists of two phases: randomly disposed skel...

journal_title：Journal of bacteriology

authors： Manocha MS,Colvin JR

更新日期：1967-07-01 00:00:00

abstract：:The cytochrome c(3) of Desulfovibrio desulfuricans and that of D. vulgaris were purified to homogeneity as judged by disc gel electrophoresis and by ultracentrifugation. Both cytochromes had an oxidation-reduction potential of -205 +/- 5 mv at pH 7.0 and showed characteristic absorption bands at 525 and 553 nm in the ...

journal_title：Journal of bacteriology

authors： Drucker H,Campbell LL

更新日期：1969-10-01 00:00:00

abstract：:We showed that the heat killing curve for exponentially growing Saccharomyces cerevisiae was biphasic. This suggests two populations of cells with different thermal killing characteristics. When exponentially growing cells separated into cell cycle-specific fractions via centrifugal elutriation were heat shocked, the ...

journal_title：Journal of bacteriology

authors： Plesset J,Ludwig JR,Cox BS,McLaughlin CS

更新日期：1987-02-01 00:00:00

abstract：:Growth of Streptococcus faecalis in the presence of l-malate resulted in the induction of a "malic enzyme" [l-malate:nicotinamide adenine dinucleotide (NAD) oxidoreductase (decarboxylating), E.C. 1.1.1.39]. Synthesis of the malic enzyme did not appear to be subject to catabolite repression by intermediate products of ...

journal_title：Journal of bacteriology

authors： London J,Meyer EY

更新日期：1969-05-01 00:00:00

abstract：:For cells of the yeast Saccharomyces cerevisiae, the size at initiation of budding is proportional to growth rate for rates from 0.33 to 0.23 h-1. At growth rates lower than 0.23 h-1, cells displayed a minimum cell size at bud initiation independent of growth rate. Regardless of growth rate, cells displayed an increas...

journal_title：Journal of bacteriology

authors： Johnston GC,Ehrhardt CW,Lorincz A,Carter BL

更新日期：1979-01-01 00:00:00

abstract：:ParB is one of two P1-encoded proteins that are required for active partition of the P1 prophage in Escherichia coli. To probe the native domain structure of ParB, we performed limited proteolytic digestions of full-length ParB, as well as of several N-terminal and C-terminal deletion fragments of ParB. The C-terminal...

journal_title：Journal of bacteriology

authors： Surtees JA,Funnell BE

更新日期：1999-10-01 00:00:00

abstract：:As part of our effort to uncover the molecular basis for the phenotypic variation among clinical Mycobacterium tuberculosis isolates, we have previously reported that isolates belonging to the W/Beijing lineage constitutively overexpress the DosR-regulated transcriptional program. While generating dosR knockouts in tw...

journal_title：Journal of bacteriology

authors： Domenech P,Kolly GS,Leon-Solis L,Fallow A,Reed MB

更新日期：2010-09-01 00:00:00

abstract：:We studied the following two aspects of the glucose effect on galactose operon expression in Escherichia coli K-12: catabolite repression and inducer exclusion. Using both inducible and constitutive strains and measuring the rate of promoter-proximal enzyme synthesis, we found that the galactose operon did not seem to...

journal_title：Journal of bacteriology

authors： Joseph E,Danchin A,Ullmann A

更新日期：1981-04-01 00:00:00

abstract：:Pyrazinamide (PZA) is an important antituberculosis drug. Unlike most antibacterial agents, PZA, despite its remarkable in vivo activity, has no activity against Mycobacterium tuberculosis in vitro except at an acidic pH. M. tuberculosis is uniquely susceptible to PZA, but other mycobacteria as well as nonmycobacteria...

journal_title：Journal of bacteriology

authors： Zhang Y,Scorpio A,Nikaido H,Sun Z

更新日期：1999-04-01 00:00:00

abstract：:The PmrA/PmrB two-component system encoded by the pmrCAB operon regulates the modification of Salmonella enterica serovar Typhimurium lipopolysaccharide leading to polymyxin B resistance. PmrA and PhoP are the only known activators of pmrCAB. A transposon mutagenesis screen for additional regulators of a pmrC::MudJ fu...

journal_title：Journal of bacteriology

authors： Merighi M,Carroll-Portillo A,Septer AN,Bhatiya A,Gunn JS

更新日期：2006-01-01 00:00:00

abstract：:Methanohalophilus strain FDF1 synthesizes beta-glutamine, betaine, and N epsilon-acetyl-beta-lysine as osmoprotective agents when the cells are grown in high external concentrations of NaCl. Nuclear magnetic resonance spectroscopic analyses of 13CH3OH-12CO2 label incorporation by the cells provide information on the b...

journal_title：Journal of bacteriology

authors： Roberts MF,Lai MC,Gunsalus RP

更新日期：1992-10-01 00:00:00

abstract：:Although yeast cannot normally incorporate exogenous deoxythymidine 5'-monophosphate (dTMP) into deoxyribonucleic acid, mutants able to do so have been isolated. We have characterized a recessive suppressor of dTMP uptake (sot1) that prevents strains carrying either tup1, tup2, or tup4 from growing on selective medium...

journal_title：Journal of bacteriology

authors： Remer S,Sherman A,Kraig E,Haber JE

更新日期：1979-05-01 00:00:00

abstract：:Chloromuconate cycloisomerases of bacteria utilizing chloroaromatic compounds are known to convert 3-chloro-cis,cis-muconate to cis-dienelactone (cis-4-carboxymethylenebut-2-en-4-olide), while usual muconate cycloisomerases transform the same substrate to the bacteriotoxic protoanemonin. Formation of protoanemonin req...

journal_title：Journal of bacteriology

authors： Kaulmann U,Kaschabek SR,Schlömann M

更新日期：2001-08-01 00:00:00

abstract：:The exosporium of Bacillus anthracis is comprised of two distinct layers: a basal layer and a hair-like nap that covers the basal layer. The hair-like nap contains the glycoproteins BclA and, most likely, BclB. BclA and BclB are directed to assemble into the exosporium by motifs in their N-terminal domains. Here, we i...

journal_title：Journal of bacteriology

authors： Thompson BM,Hoelscher BC,Driks A,Stewart GC

更新日期：2011-10-01 00:00:00

abstract：:Sortases are transamidases that covalently link proteins to the peptidoglycan of gram-positive bacteria. The genome of the pathogenic bacterium Listeria monocytogenes encodes two sortases genes, srtA and srtB. The srtA gene product anchors internalin and some other LPXTG-containing proteins to the listerial surface. H...

journal_title：Journal of bacteriology

authors： Bierne H,Garandeau C,Pucciarelli MG,Sabet C,Newton S,Garcia-del Portillo F,Cossart P,Charbit A

更新日期：2004-04-01 00:00:00

abstract：:The nonstarter lactic acid bacterium Lactococcus raffinolactis is prevalent in a wide range of environments, such as the dairy environment, but little is known about this species. Here, we present the draft genome of Lactococcus raffinolactis strain 4877, isolated from a natural mesophilic dairy starter culture. ...

journal_title：Journal of bacteriology

authors： Meslier V,Loux V,Renault P

更新日期：2012-11-01 00:00:00

abstract：:The antibiotic cerulenin causes the immediate cessation of phospholipid biosynthesis in both chemoheterotrophic and photoheterotrophic cultures of Rhodopseudomonas sphaeroides. Macromolecule biosynthesis in photoheterotrophic cells was unaffected by cerulenin for the first 2 h after antibiotic addition and then contin...

journal_title：Journal of bacteriology

authors： Shepherd WD,Kaplan S

更新日期：1983-12-01 00:00:00

abstract：:Mutant strains of Aspergillus niger with reduced citrate control of carbohydrate catabolism (cic mutants) grow faster than the parent strain on media containing 5% (wt/vol) citrate. The mutants tolerated a higher intracellular citrate concentration than the parent strain. One mutant (cic-7/3) contained phosphofructoki...

journal_title：Journal of bacteriology

authors： Schreferl G,Kubicek CP,Röhr M

更新日期：1986-03-01 00:00:00

abstract：:Multitrichously polar flagellated mutants were isolated from a monotrichously flagellated strain of Pseudomonas aeruginosa. The ability of the mutant cells to swarm in semisolid media at given gel strengths was increased by the multiflagellation. Observations of the mutant cells by electron microscopy revealed that th...

journal_title：Journal of bacteriology

authors： Suzuki T,Iino T

更新日期：1980-09-01 00:00:00

abstract：:Mouse-virulent Salmonella typhimurium strains SR-11 and ATCC 14028-1s express curli fibers, thin aggregative fibers, at ambient temperature on plates as judged by Western blot analysis and electron microscopy. Concomitantly with curli expression, cells develop a rough and dry colony morphology and bind the dye Congo r...

journal_title：Journal of bacteriology

authors： Römling U,Bian Z,Hammar M,Sierralta WD,Normark S

更新日期：1998-02-01 00:00:00

abstract：:The uptake of homologous DNA by Haemophilus influenzae was studied as a function of the proton motive force in completely competent cultures in the pH range of 6 to 8. The composition and magnitude of the proton motive force were varied by using the ionophores valinomycin and nigericin (in the presence of various pota...

journal_title：Journal of bacteriology

authors： Bremer W,Kooistra J,Hellingwerf KJ,Konings WN

更新日期：1984-03-01 00:00:00

abstract：:The transduction efficiency of Tn551, a staphylococcal transposon coding for erythromycin resistance (ermB), was increased by a factor of about five in acceptor strains carrying the gene for methicillin resistance (mec), as compared with methicillin-sensitive strains. This enhancement was independent of the generalize...

journal_title：Journal of bacteriology

authors： Berger-Bächi B

更新日期：1983-04-01 00:00:00