Abstract:
:Autoinduction is a conserved mechanism of cell density-dependent gene regulation that occurs in a variety of gram-negative bacteria. Autoinducible luminescence in Vibrio fischeri requires a transcriptional activator, LuxR, while a LuxR homolog, LasR, activates elastase expression in Pseudomonas aeruginosa. Both LuxR and LasR require specific signal molecules, called autoinducers, for activity. We show here the activation in Escherichia coli of the V. fischeri luminescence (lux) operon by LasR and of the P. aeruginosa elastase gene (lasB) by LuxR when each is in the presence of its cognate autoinducer. Neither LuxR nor LasR showed appreciable activity with the heterologous V. fischeri or P. aeruginosa autoinducer. This supports the view that there is a direct interaction of each transcriptional activator with its proper autoinducer and suggests that there are conserved, autoinduction-related elements within the promoter regions of these genes.
journal_name
J Bacterioljournal_title
Journal of bacteriologyauthors
Gray KM,Passador L,Iglewski BH,Greenberg EPdoi
10.1128/jb.176.10.3076-3080.1994subject
Has Abstractpub_date
1994-05-01 00:00:00pages
3076-80issue
10eissn
0021-9193issn
1098-5530journal_volume
176pub_type
杂志文章abstract::Successful completion of the bacteriophage P2 lytic cycle requires phage-induced lysis of its Escherichia coli host, a process that is poorly understood. Genetic analysis of lysis-deficient mutants defined a single locus, gene K, which lies within the largest late transcription unit of P2 and maps between head gene L ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.176.16.4974-4984.1994
更新日期:1994-08-01 00:00:00
abstract::A Bacillus subtilis sigM null mutant, lacking the extracytoplasmic function sigma(M) protein, was sensitive to paraquat (PQ), a superoxide-generating reagent, but not to the redox stress-inducing compounds hydrogen peroxide, cumene hydroperoxide, t-butyl hydroperoxide, or diamide. Surprisingly, a sigM mutant was only ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.187.9.2948-2956.2005
更新日期:2005-05-01 00:00:00
abstract::Structural studies were carried out on lipoteichoic acids obtained from defatted cells of 10 Bacillus strains by phenol-water partition followed by chromatography on DEAE-Sephacel and Octyl-Sepharose columns. A group of the tested bacteria (group A), Bacillus subtilis, Bacillus licheniformis, and Bacillus pumilus, was...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.167.2.508-516.1986
更新日期:1986-08-01 00:00:00
abstract::Amino acid transport rates and amino acid binding proteins were examined in a strain containing the rho-120 mutation (formerly SuA), which has been shown to lower the rho-dependent, ribonucleic acid-activated adenosine triphosphatase activity to 9% of the rho activity in the isogenic wild-type strain. Tryptophan and p...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.130.3.1024-1029.1977
更新日期:1977-06-01 00:00:00
abstract:UNLABELLED:Rhodopseudomonas palustris is an alphaproteobacterium that has served as a model organism for studies of photophosphorylation, regulation of nitrogen fixation, production of hydrogen as a biofuel, and anaerobic degradation of aromatic compounds. This bacterium is able to transition between anaerobic photoaut...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00771-15
更新日期:2015-12-28 00:00:00
abstract::Mycoplasma pneumoniae harvested from media which had become acid lost the ability both to induce formation of tetrazolium reduction inhibition antibody and to act as antigens in immunodiffusion against human convalescent-phase sera. Incorporation of N-tris(hydroxymethyl)-2-aminoethane sulfonic acid and N-2-hydroxyethy...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.97.2.612-619.1969
更新日期:1969-02-01 00:00:00
abstract::Supplementation of the growth medium with high concentrations of NaCl, KCl, or sucrose caused a drastic change in the ratio of the two peptidoglycan-associated major outer membrane proteins of Escherichia coli K-12 in that the amounts of proteins b and c present in cell envelope preparations decreased and increased, r...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.131.2.623-630.1977
更新日期:1977-08-01 00:00:00
abstract::An open-reading-frame fragment of a Methylobacterium sp. strain AM1 gene (moxF) encoding a portion of the methanol dehydrogenase structural protein has been used as a hybridization probe to detect similar sequences in a variety of methylotrophic bacteria. This hybridization was used to isolate clones containing putati...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.170.5.2063-2069.1988
更新日期:1988-05-01 00:00:00
abstract::Ornithine carbamoyltransferase synthesis is subject to two major regulatory systems in Saccharomyces cerevisiae. One system is specific for the arginine biosynthetic enzymes, whereas the other appears to be general, acting on a variety of other amino acid pathways as well. We observed that the synthetic capacity for c...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.130.3.1253-1261.1977
更新日期:1977-06-01 00:00:00
abstract::Con minus mutants, conjugation-defective mutants of Escherichia coli K-12, have been shown to be tolerant to colicins K and L. They map at approximately 14 min on the genetic map. The significance of the colicin tolerance of conjugation-defective mutants is discussed. ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.123.1.372-373.1975
更新日期:1975-07-01 00:00:00
abstract::De Repentigny, J. (University of Montreal, Montreal, Quebec, Canada), S. Sonea, and A. Frappier. Differentiation by immunodiffusion and by quantitative immunofluorescence between 5-fluorouracil-treated and normal cells from a toxinogenic Staphylococcus aureus strain. J. Bacteriol. 88:444-448. 1964.-Immunodiffusion and...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.88.2.444-448.1964
更新日期:1964-08-01 00:00:00
abstract::Nosocomial infections caused by antibiotic-resistant Klebsiella pneumoniae are emerging as a major health problem worldwide, while community-acquired K. pneumoniae infections present with a range of diverse clinical pictures in different geographic areas. In particular, an invasive form of K. pneumoniae that causes li...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00315-09
更新日期:2009-07-01 00:00:00
abstract::Macrocysts have been found among strains of Dictyostelium rosarium Raper and Cavender (K. B. Raper and J. C. Cavender, J. Elisha Mitchell Sci. Soc. 84:31-47, 1968). Strains that exhibit mating capabilities could be classified into one of three mating types: A1, A2, or A3. Each mating type was self-incompatible but cro...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.147.3.1049-1053.1981
更新日期:1981-09-01 00:00:00
abstract::The Saccharomyces cerevisiae HIS7 gene was cloned by its location immediately downstream of the previously isolated and characterized ARO4 gene. The two genes have the same orientation with a distance of only 416 bp between the two open reading frames. The yeast HIS7 gene represents the first isolated eukaryotic gene ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.175.17.5548-5558.1993
更新日期:1993-09-01 00:00:00
abstract::Haemophilus parasuis is a swine pathogen of significant industry concern, but little is known about how the organism causes disease. A related human pathogen, Haemophilus influenzae, has been better studied, and many of its virulence factors have been identified. Two of these, outer membrane proteins P2 and P5, are kn...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00469-09
更新日期:2009-10-01 00:00:00
abstract::The gene for staphylococcal enterotoxin type E (entE) was cloned from Staphylococcus aureus into plasmid vector pBR322 and introduced into Escherichia coli. A staphylococcal enterotoxin type E-producing E. coli strain was isolated. The complete nucleotide sequence of the cloned structural entE gene and the N-terminal ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.170.7.2954-2960.1988
更新日期:1988-07-01 00:00:00
abstract::DNA microarrays encompassing the entire genome of Yersinia pestis were used to characterize global regulatory changes during steady-state vegetative growth occurring after shift from 26 to 37 degrees C in the presence and absence of Ca2+. Transcriptional profiles revealed that 51, 4, and 13 respective genes and open r...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.186.18.6298-6305.2004
更新日期:2004-09-01 00:00:00
abstract::Six mycoplasma strains, isolated under anaerobic conditions from the human oropharynx, were studied by biologic and serologic means. The strains produced nippled colonies with weak hemolytic activity for guinea pig erythrocytes on agar medium. In addition, the strains metabolized arginine with a concomitant alkaline s...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.98.1.36-43.1969
更新日期:1969-04-01 00:00:00
abstract::Many bacterial species produce capsular polysaccharides that contribute to pathogenesis through evasion of the host innate immune system. The gram-positive pathogen Enterococcus faecalis was previously reported to produce one of four capsule serotypes (A, B, C, or D). Previous studies describing the four capsule serot...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00592-09
更新日期:2009-10-01 00:00:00
abstract::Freter, Rolf (Jefferson Medical College, Philadelphia, Pa.), and Atsushi Ozawa. Explanation for limitation of populations of Escherichia coli in broth cultures. J. Bacteriol. 86:904-910. 1963.-Veal Infusion Broth surrounding a cellophane bag containing a 24-hr culture of Escherichia coli was inhibitory to an inoculum ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.86.5.904-910.1963
更新日期:1963-11-01 00:00:00
abstract::Bacteroides ovatus, a human colonic anaerobe, utilizes the galactomannan guar gum as a sole source of carbohydrate. Previously, we found that none of the galactomannan-degrading enzymes were extracellular, and we characterized an outer membrane mannanase which hydrolyzes the backbone of guar gum to produce large fragm...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.169.5.2038-2043.1987
更新日期:1987-05-01 00:00:00
abstract::The relationship between growth rate and buoyant density was determined for cells from exponential-phase cultures of Escherichia coli B/r NC32 by equilibrium centrifugation in Percoll gradients at growth rates ranging from 0.15 to 2.3 doublings per h. The mean buoyant density did not change significantly with growth r...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.158.1.296-299.1984
更新日期:1984-04-01 00:00:00
abstract::The characteristics of a system for the in vitro synthesis of mitochondrial deoxyribonucleic acid (mtDNA) in mitochondria isolated from Saccharomyces cerevisiae are described. In this system the exclusive product of the reaction is mtDNA. Under optimal conditions the initial rate of synthesis is close to the calculate...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.130.3.973-982.1977
更新日期:1977-06-01 00:00:00
abstract::2-Carboxybenzaldehyde dehydrogenase from the phenanthrene-degrading bacterium Nocardioides sp. strain KP7 was purified and characterized. The purified enzyme had a molecular mass of 53 kDa by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and 205 kDa by gel filtration chromatography. Thus, the homotetramer ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.179.20.6488-6494.1997
更新日期:1997-10-01 00:00:00
abstract::We previously described a gene, lpt3, required for the addition of phosphoethanolamine (PEtn) at the 3 position on the beta-chain heptose (HepII) of the inner-core Neisseria meningitidis lipopolysaccharide (LPS), but it has long been recognized that the inner-core LPS of some strains possesses PEtn at the 6 position (...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.186.20.6970-6982.2004
更新日期:2004-10-01 00:00:00
abstract::Coscarelli, Waldimero (Rutgers, The State University, New Brunswick, N.J.) and David Pramer. Nutrition and growth of Arthrobotrys conoides. J. Bacteriol. 84:60-64. 1962-Despite its ability to capture, kill, and subsist on nematodes, the predacious fungus Arthrobotrys conoides does not demonstrate a unique nutritional ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.84.1.60-64.1962
更新日期:1962-07-01 00:00:00
abstract::A cloned 8.3-kilobase-pair DNA fragment carrying all the genes (iucABCD iutA) of the aerobactin iron transport system of plasmid pColV-K30 was subjected to in vitro mutagenesis to afford mutant genes iucA, iucC, and iucA iucC. Complementation analyses and identification of aerobactin precursors accumulated by Escheric...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.167.1.350-355.1986
更新日期:1986-07-01 00:00:00
abstract::tRNAs play a critical role in mRNA decoding, and posttranscriptional modifications within tRNAs drive decoding efficiency and accuracy. The types and positions of tRNA modifications in model bacteria have been extensively studied, and tRNA modifications in a few eukaryotic organisms have also been characterized and lo...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00690-18
更新日期:2019-04-09 00:00:00
abstract::Plasmid ColIb-P9 of the I alpha incompatibility group is known to encode a DNA primase that acts in the conjugal transfer of the plasmid and can substitute for mutant dnaG gene product in vegetative replication of the Escherichia coli chromosome. The relevant genetic determinant (sog) has previously been cloned into a...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.151.1.1-7.1982
更新日期:1982-07-01 00:00:00
abstract::Three spontaneous derivatives of Streptococcus faecium ATCC 9790, originally isolated as conditionally Triton X-100 detergent-resistant at 25 degrees C, displayed normal penicillin-induced rates of lysis at 37 degrees C but substantially reduced rates of lysis and killing at 25 degrees C. The addition of exogenous uns...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.159.2.805-807.1984
更新日期:1984-08-01 00:00:00