FtcR is a new master regulator of the flagellar system of Brucella melitensis 16M with homologs in Rhizobiaceae.

abstract：:Unlike mutations to streptomycin resistance, which restrict the function of an SU II amber suppressor, mutations to spectinomycin resistance have no restrictive effect. Furthermore, mutations to spectinomycin resistance counteract the restrictive action of streptomycin-resistant mutations when combined in a single str...

journal_title：Journal of bacteriology

authors： Kuwano M,Endo H,Ohnishi Y

更新日期：1969-02-01 00:00:00

abstract：:Transposon Tn917 mutagenesis of Bacillus subtilis BD99 followed by selection for protonophore resistance led to the isolation of strain MS119, which contained a single Tn917 insertion in an open reading frame whose deduced amino acid sequence was 56.6% identical to that of the Escherichia coli rho gene product. The in...

journal_title：Journal of bacteriology

authors： Quirk PG,Dunkley EA Jr,Lee P,Krulwich TA

更新日期：1993-02-01 00:00:00

abstract：:rRNA synthesis is the rate-limiting step in ribosome synthesis in Escherichia coli. Its regulation has been described in terms of a negative-feedback control loop in which rRNA promoter activity responds to the amount of translation. The feedback nature of this control system was demonstrated previously by artificiall...

journal_title：Journal of bacteriology

authors： Schneider DA,Gourse RL

更新日期：2003-10-01 00:00:00

abstract：:The inner or cytoplasmic membrane fraction of the cell envelope of Escherichia coli was isolated by isopycnic centrifugation on sucrose gradients. The membrane proteins were analyzed by electrophoresis in sodium dodecyl sulfate-polyacrylamide gels (8.5%), and up to 56 bands were resolved. Different preparations gave v...

journal_title：Journal of bacteriology

authors： Spencer ME,Guest JR

更新日期：1974-03-01 00:00:00

abstract：:Chemotaxis to the aromatic acid 4-hydroxybenzoate (4-HBA) by Pseudomonas putida is mediated by PcaK, a membrane-bound protein that also functions as a 4-HBA transporter. PcaK belongs to the major facilitator superfamily (MFS) of transport proteins, none of which have so far been implicated in chemotaxis. Work with two...

journal_title：Journal of bacteriology

authors： Ditty JL,Harwood CS

更新日期：1999-08-01 00:00:00

abstract：:A lipopolysaccharide (LPS) has been isolated from the gram-negative photosynthetic bacterium Rhodopseudomonas capsulata. Chemical analysis revealed the presence of d-glucose, d-galactose, l-rhamnose, 3-O-methyl-l-rhamnose (l-acofriose), d-glucosamine, 2-keto-3-deoxyoctonate, and neuraminic acid. The LPS does not conta...

journal_title：Journal of bacteriology

authors： Weckesser J,Drews G,Fromme I

更新日期：1972-03-01 00:00:00

abstract：:Two arginyl-transfer ribonucleic acid (tRNA) synthetase (EC 6.1.1.13, arginine: ribonucleic acid ligase adenosine monophosphate) activities were found in extracts of Escherichia coli strains AB1132 and NP2. The two arginyl-tRNA synthetase activities in extracts of strain AB1132 were found to be separable by diethylami...

journal_title：Journal of bacteriology

authors： Yem DW,Williams LS

更新日期：1973-02-01 00:00:00

abstract：:The membrane effects of chlorpromazine, nupercain, tetracain, and procain were studied using Bacillus cereus, B. megaterium, B. subtilis, and Streptococcus faecalis, protoplasts from S. faecalis, and isolated membranes from B. subtilis. Chlorpromazin, nupercain, and tetracain produced characteristic micromorphological...

journal_title：Journal of bacteriology

authors： Silva MT,Sousa JC,Polónia JJ,Macedo PM

更新日期：1979-01-01 00:00:00

abstract：:Aerobic microorganisms have evolved different strategies to withstand environmental oxidative stresses generated by various reactive oxygen species (ROS). For the facultative anaerobic human oral pathogen Streptococcus mutans, the mechanisms used to protect against ROS are not fully understood, since it does not posse...

journal_title：Journal of bacteriology

authors： Zhang J,Biswas I

更新日期：2009-07-01 00:00:00

abstract：:When allyl alcohol was used as a suicide substrate, spontaneous mutants and UV light- and nitrous acid-generated mutants of Methylobacterium organophilum XX were selected which grew on methylamine but not on methanol. There was no detectable methanol dehydrogenase (MDH) activity in crude extracts of these mutants, yet...

journal_title：Journal of bacteriology

authors： Machlin SM,Tam PE,Bastien CA,Hanson RS

更新日期：1988-01-01 00:00:00

abstract：:The cell surfaces of several Lactobacillus species are covered by a regular layer composed of a single species of protein, the S-protein. The 43-kDa S-protein of the neotype strain Lactobacillus acidophilus ATCC 4356, which originated from the pharynx of a human, was purified. Antibodies generated against purified S-p...

journal_title：Journal of bacteriology

authors： Boot HJ,Kolen CP,van Noort JM,Pouwels PH

更新日期：1993-10-01 00:00:00

abstract：:We studied the activity of a debranching enzyme (TreX) from Sulfolobus solfataricus on glycogen-mimic substrates, branched maltotetraosyl-β-cyclodextrin (Glc₄-β-CD), and natural glycogen to better understand substrate transglycosylation and the effect thereof on glycogen debranching in microorganisms. The validation t...

journal_title：Journal of bacteriology

authors： Nguyen DH,Park JT,Shim JH,Tran PL,Oktavina EF,Nguyen TL,Lee SJ,Park CS,Li D,Park SH,Stapleton D,Lee JS,Park KH

更新日期：2014-06-01 00:00:00

abstract：:Recovery from the inhibitory effect of ultraviolet irradiation on the induced synthesis of beta-galactosidase was studied in Escherichia coli B/r. When irradiated cells (520 ergs/mm(2) at 254 nm) were induced and incubated in minimal medium supplemented with Casamino Acids (conditions of catabolite repression), the ab...

journal_title：Journal of bacteriology

authors： Swenson PA

更新日期：1972-01-01 00:00:00

abstract：:A theoretical topology of the Rhodobacter capsulatus membrane protein LhaA was formulated and evaluated by gene fusion experiments. The apparent topological locations of fusion enzymes were compared with the theoretically derived structure, and a model of LhaA is suggested that consists of 12 transmembrane segments, w...

journal_title：Journal of bacteriology

authors： Young CS,Beatty JT

更新日期：1998-09-01 00:00:00

abstract：:During Bacillus subtilis sporulation, the transient engulfment defect of spoIIB strains is enhanced by spoVG null mutations and suppressed by spoVS null mutations. These mutations have opposite effects on expression of the motility regulon, as the spoVG mutation reduces and the spoVS mutation increases sigmaD-directed...

journal_title：Journal of bacteriology

authors： Perez AR,Abanes-De Mello A,Pogliano K

更新日期：2006-02-01 00:00:00

abstract：:A histidine kinase protein (Cph1) with sequence homology and spectral characteristics very similar to those of the plant phytochrome has been recently identified in the cyanobacterium Synechocystis sp. strain PCC 6803. Cph1 together with Rcp1 (a protein homologue to the response regulator CheY) forms a light-regulated...

journal_title：Journal of bacteriology

authors： García-Domínguez M,Muro-Pastor MI,Reyes JC,Florencio FJ

更新日期：2000-01-01 00:00:00

abstract：:Structural analogs of S-adenosylhomocysteine were tested in vitro for inhibition of the yeast S-adenosylmethionine:delta 24-sterol-C-methyltransferase enzyme. A wide inhibitory range by these compounds was observed, suggesting which structural features of the parent compound are important for binding to the enzyme. No...

journal_title：Journal of bacteriology

authors： McCammon MT,Parks LW

更新日期：1981-01-01 00:00:00

abstract：:Xylanase activity of Clostridium cellulovorans, an anaerobic, mesophilic, cellulolytic bacterium, was characterized. Most of the activity was secreted into the growth medium when the bacterium was grown on xylan. Furthermore, when the extracellular material was separated into cellulosomal and noncellulosomal fractions...

journal_title：Journal of bacteriology

authors： Kosugi A,Murashima K,Doi RH

更新日期：2001-12-01 00:00:00

abstract：:The human pathogen Eikenella corrodens expresses type IV pili and exhibits a phase variation involving the irreversible transition from piliated to nonpiliated variants. On solid medium, piliated variants form small (S-phase), corroding colonies whereas nonpiliated variants form large (L-phase), noncorroding colonies....

journal_title：Journal of bacteriology

authors： Villar MT,Hirschberg RL,Schaefer MR

更新日期：2001-01-01 00:00:00

abstract：:Strain 768-28 was isolated from a hot spring in Kamchatka, Russia, and represents a novel member of the Vulcanisaeta genus. The complete genome sequence of this thermoacidophilic anaerobic crenarchaeon reveals genes for protein and carbohydrate-active enzymes, the Embden-Meyerhof and Entner-Doudoroff pathways for gluc...

journal_title：Journal of bacteriology

authors： Gumerov VM,Mardanov AV,Beletsky AV,Prokofeva MI,Bonch-Osmolovskaya EA,Ravin NV,Skryabin KG

更新日期：2011-05-01 00:00:00

abstract：:We previously showed that adsorption of bacteriophages T4 and T5 to their respective outer membrane receptors induced a partial depolarization of the cytoplasmic membrane. As these membrane potential changes were independent of phage properties, we proposed that phage adsorption triggered the emission of a signal whic...

journal_title：Journal of bacteriology

authors： Letellier L,Labedan B

更新日期：1984-03-01 00:00:00

abstract：:The Staphylococcus aureus autoinducer-2 (AI-2) producer protein LuxS is phosphorylated by the Ser/Thr kinase Stk1 at a unique position, Thr14. The enzymatic activity of the phosphorylated isoform of LuxS was abrogated compared to that of nonphosphorylated LuxS, thus providing the first evidence of an AI-2-producing en...

journal_title：Journal of bacteriology

authors： Cluzel ME,Zanella-Cléon I,Cozzone AJ,Fütterer K,Duclos B,Molle V

更新日期：2010-12-01 00:00:00

abstract：:Salmonella typhimurium prototrophs carrying a trpR mutation synthesize tryptophan biosynthetic enzymes constitutively. When feedback inhibition of anthranilate synthetase but not 5'-phosphoribosylpyrophosphate phosphoribosyltransferase activity was by-passed by growing cells on media supplemented with anthranilic acid...

journal_title：Journal of bacteriology

authors： Stuttard C

更新日期：1975-09-01 00:00:00

abstract：:The Arc (anoxic redox control) two-component signal transduction system of Escherichia coli, which comprises the tripartite ArcB sensor kinase and the ArcA response regulator, modulates the expression of numerous operons in response to redox conditions of growth. We demonstrate that the arcA and arcB genes of Haemophi...

journal_title：Journal of bacteriology

authors： Georgellis D,Kwon O,Lin EC,Wong SM,Akerley BJ

更新日期：2001-12-01 00:00:00

abstract：:A mutant of yeast lacking proteinase C (carboxypeptidase Y) activity has been found by using a histochemical stain to screen mutagenized colonies. This defect segregates 2:2 in meiotic tetrads. Cell extracts lacked the esterolytic, amidase, and proteolytic activities associated with proteinase C. The absence of protei...

journal_title：Journal of bacteriology

authors： Wolf DH,Fink GR

更新日期：1975-09-01 00:00:00

abstract：:Aspartate transcarbamylase is synthesized during exponential growth of Bacillus subtilis and is inactivated when the cells enter the stationary phase. This work is a study of the regulation of aspartate transcarbamylase synthesis during growth and the stationary phase. Using specific immunoprecipitation of aspartate t...

journal_title：Journal of bacteriology

authors： Maurizi MR,Switzer RL

更新日期：1978-09-01 00:00:00

abstract：:Both fi(+) and fi(-) type R factors function as intact replicative units when segregated into Escherichia coli minicells. Hybridization studies demonstrate that at least 95% of the deoxyribonucleic acid (DNA) in R(+) minicells is episomal in origin. About half of the DNA can be extracted in a closed circular form and ...

journal_title：Journal of bacteriology

authors： Levy SB

更新日期：1971-10-01 00:00:00

abstract：:The 5 to 10 peritrichously inserted complex flagella of Rhizobium meliloti MVII-1 were found to form right-handed flagellar bundles. Bacteria swam at speeds up to 60 microns/s, their random three-dimensional walk consisting of straight runs and quick directional changes (turns) without the vigorous angular motion (tum...

journal_title：Journal of bacteriology

authors： Götz R,Schmitt R

更新日期：1987-07-01 00:00:00

abstract：:Histidine decarboxylases from Klebsiella planticola and Enterobacter aerogenes were purified to homogeneity and compared with the histidine decarboxylase from Morganella morganii. All three enzymes required pyridoxal 5'-phosphate as a coenzyme, showed optimal activity at pH 6.5, decarboxylated only histidine among the...

journal_title：Journal of bacteriology

authors： Guirard BM,Snell EE

更新日期：1987-09-01 00:00:00

abstract：:The chromosomal DNA replication origins (oriC) from two members of the family Enterobacteriaceae, Enterobacter aerogenes and Klebsiella pneumoniae, have been isolated as functional replication origins in Escherichia coli. The origins in the SalI restriction fragments of 17.5 and 10.2 kilobase pairs, cloned from E. aer...

journal_title：Journal of bacteriology

authors： Harding NE,Cleary JM,Smith DW,Michon JJ,Brusilow WS,Zyskind JW

更新日期：1982-12-01 00:00:00