The RNA chaperone Hfq independently coordinates expression of the VirB type IV secretion system and the LuxR-type regulator BabR in Brucella abortus 2308.

abstract：:The bacteriophage P22-based challenge-phage system was used to study the binding of Xis and FIS to their sites in attP of bacteriophage lambda. Challenge phages were constructed that contained the X1, X2, and F sites within the P22 Pant promoter, which is required for expression of antirepressor. If Xis and FIS bind t...

journal_title：Journal of bacteriology

authors： Numrych TE,Gumport RI,Gardner JF

更新日期：1991-10-01 00:00:00

abstract：:The ToxR protein of Vibrio cholerae regulates the expression of several virulence factors that play important roles in the pathogenesis of cholera. Previous experiments with ToxR-alkaline phosphatase (ToxR-PhoA) fusion proteins suggested a model for gene regulation in which the inactive form of ToxR was a monomer and ...

journal_title：Journal of bacteriology

authors： Ottemann KM,Mekalanos JJ

更新日期：1996-01-01 00:00:00

abstract：:Organoautotrophic growth of Alcaligenes eutrophus on formate was dependent on the presence of molybdate in the medium. Supplementation of the medium with tungstate lead to growth cessation. Corresponding effects of these anions were observed for the activity of the soluble, NAD(+)-linked formate dehydrogenase (S-FDH; ...

journal_title：Journal of bacteriology

authors： Friedebold J,Bowien B

更新日期：1993-08-01 00:00:00

abstract：:Pseudomonas aeruginosa PAO1 catabolized the aromatic amines tyramine and octopamine through 4-hydroxyphenylacetic acid and 3,4-dihydroxyphenylacetic acid (HPA). meta ring cleavage was mediated by 3,4-dihydroxyphenylacetate 2,3-dioxygenase (HPADO), producing 2-hydroxy-5-carboxymethylmuconic semialdehyde (MSA). An NAD-d...

journal_title：Journal of bacteriology

authors： Cuskey SM,Olsen RH

更新日期：1988-01-01 00:00:00

abstract：:Proteus mirabilis, an agent of urinary tract infection, expresses at least four fimbrial types. Among these are the MR/P (mannose-resistant/Proteus-like) fimbriae. MrpA, the structural subunit, is optimally expressed at 37 degrees C in Luria broth cultured statically for 48 h by each of seven strains examined. Genes e...

journal_title：Journal of bacteriology

authors： Bahrani FK,Mobley HL

更新日期：1994-06-01 00:00:00

abstract：:The metabolism of mRNA from the lactose (lac) operon of Escherichia coli has been studied in ribonuclease (RNase) III-deficient strains (rnc-105). The induction lag for beta-galactosidase from the first gene was twice as long, and enzyme synthesis was reduced 10-fold in one such mutant compared with its isogenic rnc+ ...

journal_title：Journal of bacteriology

authors： Talkad V,Achord D,Kennell D

更新日期：1978-08-01 00:00:00

abstract：:The effect of plasmid CAM-OCT on responses to UV irradiation was compared in Pseudomonas aeruginosa, in Pseudomonas putida, and in Pseudomonas putida mutants carrying mutations in UV response genes. CAM-OCT substantially increased both survival and mutagenesis in the two species. P. aeruginosa strains without CAM-OCT ...

journal_title：Journal of bacteriology

authors： McBeth DL

更新日期：1989-02-01 00:00:00

abstract：:Thin pili of the closely related IncI1 plasmids ColIb-P9 and R64 are required only for liquid mating and belong to the type IV family of pili. They were sedimented by ultracentrifugation from culture medium in which Escherichia coli cells harboring ColIb-P9- or R64-derived plasmids had been grown, and then the pili we...

journal_title：Journal of bacteriology

authors： Yoshida T,Furuya N,Ishikura M,Isobe T,Haino-Fukushima K,Ogawa T,Komano T

更新日期：1998-06-01 00:00:00

abstract：:Bacillus subtilis strains containing deletions in the genes coding for one or two of the major small, acid-soluble spore proteins (SASP; termed SASP-alpha and SASP-beta) were constructed. These mutants sporulated normally, but the spores lacked either SASP-alpha, SASP-beta, or both proteins. The level of minor SASP di...

journal_title：Journal of bacteriology

authors： Mason JM,Setlow P

更新日期：1986-07-01 00:00:00

abstract：:Transcription of the virB gene, a transcriptional regulator of invasion genes on the large plasmid of Shigella flexneri, is strictly regulated by growth temperature; when bacteria are grown at 37 degrees C, virB transcription is highly activated, while at 30 degrees C the level of virB transcription decreases to less ...

journal_title：Journal of bacteriology

authors： Tobe T,Yoshikawa M,Sasakawa C

更新日期：1995-02-01 00:00:00

abstract：:The nucleotide messenger cyclic di-GMP (c-di-GMP) plays a central role in the regulation of motility, virulence, and biofilm formation in many pathogenic bacteria. EAL domain-containing phosphodiesterases are the major signaling proteins responsible for the degradation of c-di-GMP and maintenance of its cellular level...

journal_title：Journal of bacteriology

authors： Chen MW,Kotaka M,Vonrhein C,Bricogne G,Rao F,Chuah ML,Svergun D,Schneider G,Liang ZX,Lescar J

更新日期：2012-09-01 00:00:00

abstract：:Previously, we identified a gene (aldA) from Myxococcus xanthus, which we suggested encoded the enzyme alanine dehydrogenase on the basis of similarity to known Ald protein sequences (M. J. Ward, H. Lew, A. Treuner-Lange, and D. R. Zusman, J. Bacteriol. 180:5668-5675, 1998). In this study, we have confirmed that aldA ...

journal_title：Journal of bacteriology

authors： Ward MJ,Lew H,Zusman DR

更新日期：2000-01-01 00:00:00

abstract：:Eleven conditional lethal dnaG(Ts) mutations were located by chemical cleavage of heteroduplexes formed between polymerase chain reaction-amplified DNAs from wild-type and mutant dnaG genes. This entailed end labeling one DNA strand of the heteroduplex, chemically modifying the strands with hydroxylamine or osmium tet...

journal_title：Journal of bacteriology

authors： Grompe M,Versalovic J,Koeuth T,Lupski JR

更新日期：1991-02-01 00:00:00

abstract：:Resistance to the antifolates methasquin and amethopterin has been studied in new strains of Streptococcus faecium var. durans. Two methasquin-resistant strains (SF/MQ, SF/MQ(T)) and an amethopterin-resistant strain (SF/AM) were selected independently from the wild-type S. faecium var. durans (SF/O). SF/MQ(T) is a thy...

journal_title：Journal of bacteriology

authors： Rader JI,Hutchison DJ

更新日期：1972-04-01 00:00:00

abstract：:Many surface proteins of pathogenic gram-positive bacteria are linked to the cell wall envelope by a mechanism requiring a C-terminal sorting signal with an LPXTG motif. Surface proteins of Streptococcus pneumoniae harbor another motif, YSIRK-G/S, which is positioned within signal peptides. The signal peptides of some...

journal_title：Journal of bacteriology

authors： Bae T,Schneewind O

更新日期：2003-05-01 00:00:00

abstract：:We report the first example of a gene, hmp, encoding a soluble flavohemoglobin in Escherichia coli K-12, which is up-regulated by paraquat in a SoxRS-independent manner. Unlike what is found for other paraquat-inducible genes, high concentrations of paraquat (200 microM) were required to increase the level of hmp expr...

journal_title：Journal of bacteriology

authors： Membrillo-Hernández J,Kim SO,Cook GM,Poole RK

更新日期：1997-05-01 00:00:00

abstract：:Peptidoglycan synthesis rate in nonconstricting filaments of Escherichia coli dnaX(Ts) has been studied by autoradiography of incorporated [3H]diaminopimelic acid. Analysis of autoradiograms of whole cells and sacculi showed that peptidoglycan is synthesized at a reduced rate in the nucleoid-containing parts of these ...

journal_title：Journal of bacteriology

authors： Mulder E,Woldringh CL

更新日期：1991-08-01 00:00:00

abstract：:A plasmid, R773, which confers resistance to arsenic compounds, is transmissible between strains of Escherichia coli. It is a member of compatibility group F(1). ...

journal_title：Journal of bacteriology

authors： Hedges RW,Baumberg S

更新日期：1973-07-01 00:00:00

abstract：:Regulation of isoleucine, valine, and leucine biosynthesis and isoleucyl-, valyl-, and leucyl-transfer ribonucleic acid (tRNA) synthetase formation was examined in two mutant strains of Escherichia coli. One mutant was selected for growth resistance to the isoleucine analogue, ketomycin, and the other was selected for...

journal_title：Journal of bacteriology

authors： Jackson J,Williams LS,Umbarger HE

更新日期：1974-12-01 00:00:00

abstract：:ATP-dependent glucokinase is suggested to have evolved from a hypothetical polyphosphate (polyP)-dependent glucokinase (polyP-GK) via a bifunctional polyP/ATP glucokinase (polyP/ATP-GK). Here we showed that polyP-GK is present in a polyP-accumulating bacterium, Microlunatus phosphovorus. The polyP-GK produced glucose-...

journal_title：Journal of bacteriology

authors： Tanaka S,Lee SO,Hamaoka K,Kato J,Takiguchi N,Nakamura K,Ohtake H,Kuroda A

更新日期：2003-09-01 00:00:00

abstract：:The biosynthesis of the thaxtomin cyclic dipeptide phytotoxins proceeds nonribosomally via the thiotemplate mechanism. Acyladenylation, thioesterification, N-methylation, and cyclization of two amino acid substrates are catalyzed by the txtAB-encoded thaxtomin synthetase. Nucleotide sequence analysis of the region 3' ...

journal_title：Journal of bacteriology

authors： Healy FG,Krasnoff SB,Wach M,Gibson DM,Loria R

更新日期：2002-04-01 00:00:00

abstract：:The cir gene, which encodes the colicin I receptor protein and is regulated by both cellular iron content and growth temperature, was cloned into a multicopy-number plasmid. Physical mapping and complementation analysis established the position of cir between mgl and nfo on the Escherichia coli chromosome. A gene enco...

journal_title：Journal of bacteriology

authors： Griggs DW,Tharp BB,Konisky J

更新日期：1987-12-01 00:00:00

abstract：:Penicillin-binding protein 2 (PBP-2) of Escherichia coli K-12 was purified by covalent affinity chromatography using 6-aminopenicillanic acid covalently coupled to carboxymethyl-Sepharose (6-APA-CM-Sepharose). Purification of PBP-2 was accomplished by prebinding the methoxy cephalosporin, cefoxitin, to the Triton X-10...

journal_title：Journal of bacteriology

authors： Curtis SJ,Strominger JL

更新日期：1981-01-01 00:00:00

abstract：:The copy number of 2 mu DNA-derived plasmids in CIR+ Saccharomyces cerevisiae transformants is determined by its selective marker and is usually much lower than that of the endogenous plasmid. Only plasmids containing the leu2 allele of pJDB219, designated as leu2-d, under selective conditions displayed a higher copy ...

journal_title：Journal of bacteriology

authors： Erhart E,Hollenberg CP

更新日期：1983-11-01 00:00:00

abstract：:The R-factor R1 is present in a low number of copies per genome (near unity, so-called stringent control of replication). The replication of R1 was studied in a density-shift experiment. One generation after the shift about 20% of the R1 copies had not replicated, whereas about 20% had replicated at least twice. The r...

journal_title：Journal of bacteriology

authors： Gustafsson P,Nordström K

更新日期：1975-08-01 00:00:00

abstract：:A mutation in Escherichia coli leads to the loss of ribosomal protein L24, severely impaired growth, and a temperature-sensitive phenotype. The mutation was shown to be in rplX, the gene for protein L24, and was due to the alteration of an AAA codon to a TAA stop codon at position 61 in rplX that resulted in a 20-amin...

journal_title：Journal of bacteriology

authors： Nishi K,Dabbs ER,Schnier J

更新日期：1985-09-01 00:00:00

abstract：:Mutations in two chromosomal genes of Escherichia coli, cpxA and cpxB, produced a temperature-sensitive growth defect that was remedied specifically by the addition of isoleucine and valine to the minimal medium. This auxotrophy was manifested only when the medium contained exogenous leucine, suggesting that mutant ce...

journal_title：Journal of bacteriology

authors： McEwen J,Silverman P

更新日期：1980-10-01 00:00:00

abstract：:Streptococcus equi subsp. zooepidemicus is an opportunistic pathogen. It has caused a very large economic loss in the swine industry of China and has become a threat to human health. We announce the complete genome sequence of S. equi subsp. zooepidemicus strain ATCC 35246, which provides opportunities to understand i...

journal_title：Journal of bacteriology

authors： Ma Z,Geng J,Zhang H,Yu H,Yi L,Lei M,Lu CP,Fan HJ,Hu S

更新日期：2011-10-01 00:00:00

abstract：:Apparent pK values were determined for a series of commercially available carboxylic acids in a search for a buffer suitable for bacterial studies at pH 7 in media free from nitrogen, sulfur, and phosphorus. Of the compounds possessing pK' values near pH 7,3,6-endomethylene-1,2,3,6-tetrahydrophthalic acid (EMTA) was c...

journal_title：Journal of bacteriology

authors： Mallette MF

更新日期：1967-08-01 00:00:00

abstract：:Members of the Streptococcus bovis group are important causes of endocarditis. However, factors associated with their pathogenicity, such as adhesins, remain uncharacterized. We recently demonstrated that endocarditis-derived Streptococcus gallolyticus subsp. gallolyticus isolates frequently adhere to extracellular ma...

journal_title：Journal of bacteriology

authors： Sillanpää J,Nallapareddy SR,Qin X,Singh KV,Muzny DM,Kovar CL,Nazareth LV,Gibbs RA,Ferraro MJ,Steckelberg JM,Weinstock GM,Murray BE

更新日期：2009-11-01 00:00:00