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_name
J Bacterioljournal_title
Journal of bacteriologyauthors
Davies JK,Reeves Pdoi
10.1128/JB.123.1.372-373.1975keywords:
subject
Has Abstractpub_date
1975-07-01 00:00:00pages
372-3issue
1eissn
0021-9193issn
1098-5530journal_volume
123pub_type
杂志文章abstract::In the photosynthetic bacterium Rhodobacter capsulatus, the enzyme DNA gyrase has been implicated in the expression of genes for anaerobic metabolic processes such as nitrogen fixation and photosynthesis. To assess the involvement of supercoiling in anaerobic gene expression, we have developed an assay to detect in vi...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.171.9.4836-4843.1989
更新日期:1989-09-01 00:00:00
abstract::The general aromatic amino acid permease, AroP, of Escherichia coli is responsible for the active transport of phenylalanine, tyrosine, and tryptophan. A proposed topological model for the AroP permease, consisting of 12 hydrophobic transmembrane spans connected by hydrophilic loops, is very similar to that of the clo...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.179.10.3317-3323.1997
更新日期:1997-05-01 00:00:00
abstract::The nitrogenase proteins from eight organisms have been highly purified, and a survey of their cross-reactions shows that the nitrogenase proteins from a wide variety of organisms can interact with one another. An active cross-reaction is the complementary functioning of the MoFe protein and the Fe protein from differ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.134.3.936-943.1978
更新日期:1978-06-01 00:00:00
abstract::Most isolates of Salmonella enterica serovar Typhimurium contain a 90-kb virulence plasmid. This plasmid is reported to be mobilizable but nonconjugative. However, we have determined that the virulence plasmid of strains LT2, 14028, and SR-11 is indeed self-transmissible. The plasmid of strain SL1344 is not. Optimal c...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.181.4.1364-1368.1999
更新日期:1999-02-01 00:00:00
abstract::Integration host factor (IHF) is a small, basic protein that is needed for efficient recombination of bacteriophage lambda, as well as for other host and viral functions. We have constructed strains in which the two subunits of IHF, encoded by the himA and hip genes of Escherichia coli, are expressed under the control...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.169.9.4124-4127.1987
更新日期:1987-09-01 00:00:00
abstract::We designed a selection strategy for the isolation of Escherichia coli mutants exhibiting enhanced protein disulfide isomerase activity. The folding of a variant of tissue plasminogen activator (v-tPA), a protein containing nine disulfide bonds, in the bacterial periplasm is completely dependent on the level of disulf...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.186.3.654-660.2004
更新日期:2004-02-01 00:00:00
abstract::A fusion between the pCloDF13-derived bacteriocin release protein and beta-lactamase was constructed to investigate the subcellular localization and posttranslational modification of the bacteriocin release protein in Escherichia coli. The signal sequence and 25 of the 28 amino acid residues of the mature bacteriocin ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.169.5.2245-2250.1987
更新日期:1987-05-01 00:00:00
abstract::A fusion between lacZ and ftsZ of Escherichia coli was constructed to obtain a beta-galactosidase-FtsZ fusion protein. This fusion protein was used to raise antibodies against cell division protein FtsZ. Six monoclonal antibodies were obtained, and they reacted with FtsZ from cytoplasm and membrane fractions. The epit...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.176.7.1886-1893.1994
更新日期:1994-04-01 00:00:00
abstract::The phoB gene of Bacillus subtilis encodes an alkaline phosphatase (PhoB, formerly alkaline phosphatase III) that is expressed from separate promoters during phosphate deprivation in a PhoP-PhoR-dependent manner and at stage two of sporulation under phosphate-sufficient conditions independent of PhoP-PhoR. Isogenic st...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.187.15.5166-5178.2005
更新日期:2005-08-01 00:00:00
abstract::Bacteria in biofilms often undergo active dispersal events and revert to a free-swimming, planktonic state to complete the biofilm life cycle. The signaling molecule nitric oxide (NO) was previously found to trigger biofilm dispersal in the opportunistic pathogen Pseudomonas aeruginosa at low, nontoxic concentrations ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00975-09
更新日期:2009-12-01 00:00:00
abstract::The recent discovery that the protein DksA acts as a coregulator of genes controlled by ppGpp led us to investigate the similarities and differences between the relaxed phenotype of a ppGpp-deficient mutant and the phenotype of a strain lacking DksA. We demonstrate that the absence of DksA and ppGpp has similar effect...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00330-07
更新日期:2007-07-01 00:00:00
abstract::Antigen 43 has been identified as a unique protein complex in the outer membrane of Escherichia coli. The complex contains two different polypeptides, alpha (Mr, 60,000) and beta (Mr, 53,000), in equal stoichiometry (P. Owen, P. Caffrey, and L.-G. Josefsson, J. Bacteriol. 169:3770-3777, 1987). The alpha subunit was re...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.171.7.3634-3640.1989
更新日期:1989-07-01 00:00:00
abstract::The marRAB operon is one of two operons in the mar locus of Escherichia coli that are divergently transcribed from a central regulatory region, marO. The marRAB operon, transcribed from marOII, controls intrinsic resistance or susceptibility to multiple antibiotics and is inducible by structurally unrelated compounds ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.177.12.3414-3419.1995
更新日期:1995-06-01 00:00:00
abstract::Cell size at bud initiation shows the same relationship to growth rate in wild-type and petite yeast cells. The nutrient-modulated size control is related to growth rate rather than a change from fermentative to oxidative metabolism. ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.151.2.1051-1052.1982
更新日期:1982-08-01 00:00:00
abstract::Two mutations concerned with mannan biosynthesis in the yeast Saccharomyces cerevisiae have been mapping. The mnn2 mutation, which affects the addition to the polysaccharide backbone of the first side-chain D-mannose unit in alpha1-leads to2 linkage, was located on chromosome II linked to the centromere and the gall l...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.123.2.616-619.1975
更新日期:1975-08-01 00:00:00
abstract::A thermosensitive episome bearing the transposon Tn10, F(Ts)::Tn10 Lac+, has been successfully transferred from Escherichia coli to several wild strains of the enterobacteria Erwinia carotovora subsp. chrysanthemi, which are pathogenic on Saintpaulia ionantha. In one of these strains, all of the characters controlled ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.150.1.122-131.1982
更新日期:1982-04-01 00:00:00
abstract::Evolutionary trajectories and mutational landscapes of drug-resistant bacteria are influenced by cell-intrinsic and extrinsic factors. In this study, I demonstrated that loss of the Lon protease altered susceptibility of Escherichia coli to trimethoprim and that these effects were strongly contingent on the drug conce...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00561-19
更新日期:2020-01-15 00:00:00
abstract::A map location of the gluconate-6-phosphate dehydrogenase (gnd) marker was estimated in Escherichia coli C at approximately 46 min by P1 transduction. The gnd locus appears to lie between the co-transducible histidine and prophage P2 location I markers. ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.116.2.1056-1058.1973
更新日期:1973-11-01 00:00:00
abstract::A technique for identifying and characterizing staphylococcal hemolysins by first separating them electrophoretically in barbital-buffered agar gel (pH 8.4) at 5 ma/cm for 2 hr and then determining their hemolytic activities by exposing them to human, horse, rabbit, and sheep erythrocytes is described. The alpha-hemol...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.93.2.525-530.1967
更新日期:1967-02-01 00:00:00
abstract::A cyclic version of the Entner-Doudoroff pathway is used by Pseudomonas aeruginosa to metabolize carbohydrates. Genes encoding the enzymes that catabolize intracellular glucose to pyruvate and glyceraldehyde 3-phosphate are coordinately regulated, clustered at 39 min on the chromosome, and collectively form the hex re...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.182.14.3934-3941.2000
更新日期:2000-07-01 00:00:00
abstract::2-Aminonumconic 6-semialdehyde is an unstable intermediate in the biodegradation of nitrobenzene and 2-aminophenol by Pseudomonas pseudoalcaligenes JS45. Previous work has shown that enzymes in cell extracts convert 2-aminophenol to 2-aminomuconate in the presence of NAD+. In the present work, 2-aminomuconic semialdeh...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.180.17.4591-4595.1998
更新日期:1998-09-01 00:00:00
abstract::Gerhardt, Philipp (University of Michigan, Ann Arbor) and S. H. Black. Permeability of bacterial spores. II. Molecular variables affecting solute permeation. J. Bacteriol. 82:750-760. 1961.-More than 100 compounds were tested for their uptake by dormant spores of a bacillus. The extent of penetration was found to be d...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.82.5.750-760.1961
更新日期:1961-11-01 00:00:00
abstract::The crystal structure of Escherichia coli PdxY, the protein product of the pdxY gene, has been determined to a 2.2-A resolution. PdxY is a member of the ribokinase superfamily of enzymes and has sequence homology with pyridoxal kinases that phosphorylate pyridoxal at the C-5' hydroxyl. The protein is a homodimer with ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.186.23.8074-8082.2004
更新日期:2004-12-01 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
pub_type: 杂志文章
doi:10.1128/JB.01442-13
更新日期:2014-06-01 00:00:00
abstract::Gene III (gIII) of phiLf, a filamentous phage specifically infecting Xanthomonas campestris pv. campestris, was previously shown to encode a virion-associated protein (pIII) required for phage adsorption. In this study, the transcription start site for the gene and the N-terminal sequence of the protein were determine...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.181.8.2465-2471.1999
更新日期:1999-04-01 00:00:00
abstract::A search by subtractive hybridization for sequences present in only certain strains of Helicobacter pylori led to the discovery of a 2-kb transposable element to be called IS607, which further PCR and hybridization tests indicated was present in about one-fifth of H. pylori strains worldwide. IS607 contained two open ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.182.19.5300-5308.2000
更新日期:2000-10-01 00:00:00
abstract::Commonly used procedures effected the extraction of only 10% of the lipoteichoic acid of stationary-phase cells of Staphylococcus aureus and Streptococcus faecium, unless the cells were first disrupted. ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.149.1.399-402.1982
更新日期:1982-01-01 00:00:00
abstract::ibeA is a virulence factor found in some extraintestinal pathogenic Escherichia coli (ExPEC) strains from the B2 phylogenetic group and particularly in newborn meningitic and avian pathogenic strains. It was shown to be involved in the invasion process of the newborn meningitic strain RS218. In a previous work, we sho...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00089-12
更新日期:2012-09-01 00:00:00
abstract::The genomic organization of Bordetella pertussis strains has been examined by using a new method. This method does not depend on the prior determination of a restriction map of the bacterial chromosome but is based on the ability to measure directly the distance between two genes. This is accomplished through the inte...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.179.18.5820-5826.1997
更新日期:1997-09-01 00:00:00
abstract::The pyrimidine de novo biosynthesis pathway has been characterized for a number of organisms. The general pathway consists of six enzymatic steps. In the characterization of the pyrimidine pathway of Lactococcus lactis, two different pyrD genes encoding dihydroorotate dehydrogenase were isolated. The nucleotide sequen...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.176.13.3975-3982.1994
更新日期:1994-07-01 00:00:00