Mutations at several loci cause increased expression of ribonucleotide reductase in Escherichia coli.

abstract：:Microorganisms that use sulfate as a terminal electron acceptor for anaerobic respiration play a central role in the global sulfur cycle. Here, we report the results of comparative sequence analysis of dissimilatory sulfite reductase (DSR) genes from closely and distantly related sulfate-reducing organisms to infer th...

journal_title：Journal of bacteriology

authors： Wagner M,Roger AJ,Flax JL,Brusseau GA,Stahl DA

更新日期：1998-06-01 00:00:00

abstract：:Two-component signal transduction systems are utilized by prokaryotic and eukaryotic cells to sense and respond to environmental stimuli, both to maintain homeostasis and to rapidly adapt to changing conditions. Studies have begun to emerge that utilize a large-scale mutagenesis approach to analyzing these systems in ...

journal_title：Journal of bacteriology

authors： Hussa EA,O'Shea TM,Darnell CL,Ruby EG,Visick KL

更新日期：2007-08-01 00:00:00

abstract：:The growth of tubercle bacilli in serum samples of untreated animals depends upon the availability of ionic iron which serves as a growth factor in supporting bacillary multiplication. The amount of available iron in serum is determined by the ratio between iron-saturated and iron-free transferrin; a low value for the...

journal_title：Journal of bacteriology

authors： Kochan I,Golden CA,Bukovic JA

更新日期：1969-10-01 00:00:00

abstract：:The kil-kor regulon of the self-transmissible, broad-host-range plasmid RK2 is a unique network with eight coregulated operons. Among the genes encoded by the kil-kor regulon are trfA, which encodes the replication initiator, and several kil loci (kilA, kilB, kilC, and kilE), each of which is lethal to the host cell i...

journal_title：Journal of bacteriology

authors： Thomson VJ,Jovanovic OS,Pohlman RF,Chang CH,Figurski DH

更新日期：1993-04-01 00:00:00

abstract：:Escherichia coli K-12 can utilize a gamma-glutamyl peptide as an amino acid source, for which gamma-glutamyltranspeptidase (EC 2.3.2.2) is essential. We suggest that the gamma-glutamyl linkage of a gamma-glutamyl peptide is hydrolyzed by gamma-glutamyltranspeptidase located in the periplasmic space, and the released a...

journal_title：Journal of bacteriology

authors： Suzuki H,Hashimoto W,Kumagai H

更新日期：1993-09-01 00:00:00

abstract：:The mecA-27r gene from Staphylococcus aureus 27r encodes penicillin-binding protein 2a (PBP2a-27r), which causes this strain to be methicillin resistant. Removal or replacement of the N-terminal transmembrane domain had no effect on binding of penicillin, but removal of portions of the putative transglycosylase domain...

journal_title：Journal of bacteriology

authors： Wu CY,Alborn WE Jr,Flokowitsch JE,Hoskins J,Unal S,Blaszczak LC,Preston DA,Skatrud PL

更新日期：1994-01-01 00:00:00

abstract：:Martin, Alice J. (Nassau County Department of Health, Hempstead, N.Y.), and Margaret O'Brien. Detection of enteropathogenic Escherichia coli in fecal cultures by use of a modified fluorescent-antibody technique. J. Bacteriol. 89:570-573. 1965.-The application of the fluorescent-antibody (FA) technique to cultures of f...

journal_title：Journal of bacteriology

authors： MARTIN AJ,O'BRIEN M

更新日期：1965-03-01 00:00:00

abstract：:Mutants lacking an enzyme of the oxidative branch of the hexose monophosphate shunt, 6-phosphogluconolactonase (pgl), have been selected as a new class of glucose-negative derivatives of a phosphoglucose isomerase (pgi) mutant. Glucose negativity is not as complete as in mutants lacking phosphoglucose isomerase and gl...

journal_title：Journal of bacteriology

authors： Kupor SR,Fraenkel DG

更新日期：1969-12-01 00:00:00

abstract：:By transformation of dnaA null mutant host cells that are suppressed either by an rnh mutation or by chromosomal integration of a mini-R1 plasmid, it was shown that replication of miniplasmids composed of the NR1 minimal replicon had no absolute dependence upon DnaA protein. In addition, the suppression of the dnaA nu...

journal_title：Journal of bacteriology

authors： Tang XB,Womble DD,Rownd RH

更新日期：1989-10-01 00:00:00

abstract：:Flac mutants insensitive to transfer inhibition by R factors. JR66a and R485 were isolated and characterized. Representative mutations were cis dominant and are therefore presumed to be at the sites of action, fisU and fisV, respectively, of the FinU and FinV transfer inhibition systems encoded by JR66a and R485. The ...

journal_title：Journal of bacteriology

authors： Gasson MJ,Willetts NS

更新日期：1977-08-01 00:00:00

abstract：:A 22-kb segment of chromosomal DNA from Enterococcus faecalis OG1RF containing the pyrimidine biosynthesis genes pyrC and pyrD was previously detected as complementing Escherichia coli pyrC and pyrD mutations. In the present study, it was found that the E. faecalis pyrimidine biosynthetic genes in this clone (designat...

journal_title：Journal of bacteriology

authors： Li X,Weinstock GM,Murray BE

更新日期：1995-12-01 00:00:00

abstract：:The SOS response in bacteria includes a global transcriptional response to DNA damage. DNA damage is sensed by the highly conserved recombination protein RecA, which facilitates inactivation of the transcriptional repressor LexA. Inactivation of LexA causes induction (derepression) of genes of the LexA regulon, many o...

journal_title：Journal of bacteriology

authors： Au N,Kuester-Schoeck E,Mandava V,Bothwell LE,Canny SP,Chachu K,Colavito SA,Fuller SN,Groban ES,Hensley LA,O'Brien TC,Shah A,Tierney JT,Tomm LL,O'Gara TM,Goranov AI,Grossman AD,Lovett CM

更新日期：2005-11-01 00:00:00

abstract：:We studied the roles of Streptococcus thermophilus phosphogalactosyltransferase (EpsE) (the priming enzyme), tyrosine kinase (EpsD), phosphatase (EpsB), and a membrane-associated protein with no known biochemical function (EpsC) in exopolysaccharide (EPS) synthesis. These proteins are well-conserved among bacteria and...

journal_title：Journal of bacteriology

authors： Minic Z,Marie C,Delorme C,Faurie JM,Mercier G,Ehrlich D,Renault P

更新日期：2007-02-01 00:00:00

abstract：:Strains of Bacillus thuringiensis such as B. thuringiensis subsp. israelensis (ONR-60A) and B. thuringiensis subsp. morrisoni (PG-14) pathogenic for mosquito larvae produce a complex parasporal body consisting of several protein endotoxins synthesized during sporulation that form an aggregate of crystalline inclusions...

journal_title：Journal of bacteriology

authors： Diaz-Mendoza M,Bideshi DK,Federici BA

更新日期：2012-03-01 00:00:00

abstract：:The magnetosomes of many magnetotactic bacteria consist of membrane-enveloped magnetite crystals, whose synthesis is favored by a low redox potential. However, the cellular redox processes governing the biomineralization of the mixed-valence iron oxide have remained unknown. Here, we show that in the alphaproteobacter...

journal_title：Journal of bacteriology

authors： Li Y,Katzmann E,Borg S,Schüler D

更新日期：2012-09-01 00:00:00

abstract：:The ruvB genes of the highly divergent thermophilic eubacteria Thermus thermophilus and Thermotoga maritima were cloned, sequenced, and expressed in Escherichia coli. Both thermostable RuvB proteins were purified to homogeneity. Like E. coli RuvB protein, both purified thermostable RuvB proteins showed strong double-s...

journal_title：Journal of bacteriology

authors： Tong J,Wetmur JG

更新日期：1996-05-01 00:00:00

abstract：:Fox, Sidney W. (The Florida State University, Tallahassee) and Shuhei Yuyama. Effects of the Gram stain on microspheres from thermal polyamino acids. J. Bacteriol. 85:279-283. 1963.-Microspheres produced from acid proteinoid accept the Gram stain. The stain is negative, but microspheres produced from mixtures containi...

journal_title：Journal of bacteriology

authors： FOX SW,YUYAMA S

更新日期：1963-02-01 00:00:00

abstract：:Previously, we reported that rdxB, encoding a likely membrane-bound two [4Fe-4S]-containing center, is involved in the aerobic regulation of photosystem gene expression in Rhodobacter sphaeroides 2.4.1. To further investigate the role of rdxB as well as other genes of the rdxBHIS operon on photosystem gene expression,...

journal_title：Journal of bacteriology

authors： Roh JH,Kaplan S

更新日期：2000-06-01 00:00:00

abstract：UNLABELLED:The role of chromosomal toxin-antitoxin (TA) systems, which are ubiquitous within the genomes of free-living bacteria, is still debated. We have scanned the Vibrio cholerae N16961 genome for class 2 TA genes and identified 18 gene pair candidates. Interestingly, all but one are located in the chromosome 2 su...

journal_title：Journal of bacteriology

authors： Iqbal N,Guérout AM,Krin E,Le Roux F,Mazel D

更新日期：2015-07-01 00:00:00

abstract：:Sinorhizobium meliloti is a free-living soil bacterium which is capable of establishing a symbiotic relationship with the alfalfa plant (Medicago sativa). This symbiosis involves a network of bacterium-host signaling, as well as the potential for bacterium-bacterium communication, such as quorum sensing. In this study...

journal_title：Journal of bacteriology

authors： Marketon MM,González JE

更新日期：2002-07-01 00:00:00

abstract：:HtrA-type serine proteases participate in folding and degradation of aberrant proteins and in processing and maturation of native proteins. Mutation of the corresponding genes often confers a pleiotropic phenotype that can include temperature sensitivity, sensitivity to osmotic and oxidative stress, and attenuated vir...

journal_title：Journal of bacteriology

authors： Noone D,Howell A,Collery R,Devine KM

更新日期：2001-01-01 00:00:00

abstract：:The recent emergence of multidrug resistance (MDR) in Acinetobacter baumannii has raised concern in health care settings worldwide. In order to understand the repertoire of resistance determinants and their organization and origins, we compared the genome sequences of three MDR and three drug-susceptible A. baumannii ...

journal_title：Journal of bacteriology

authors： Adams MD,Goglin K,Molyneaux N,Hujer KM,Lavender H,Jamison JJ,MacDonald IJ,Martin KM,Russo T,Campagnari AA,Hujer AM,Bonomo RA,Gill SR

更新日期：2008-12-01 00:00:00

abstract：:Activation of the late prespore-specific RNA polymerase sigma factor sigma(G) during Bacillus subtilis sporulation coincides with completion of the engulfment process, when the prespore becomes a protoplast fully surrounded by the mother cell cytoplasm and separated from it by a double membrane system. Activation of s...

journal_title：Journal of bacteriology

authors： Serrano M,Vieira F,Moran CP Jr,Henriques AO

更新日期：2008-12-01 00:00:00

abstract：:Accumulation of certain nonmetabolizable sugar-phosphates (including α-methyl glucoside-6-phosphate) in Escherichia coli is growth inhibitory and elicits the glucose-phosphate stress response. The transcription factor SgrR activates transcription of the small RNA SgrS under stress conditions. SgrS represses translatio...

journal_title：Journal of bacteriology

authors： Sun Y,Vanderpool CK

更新日期：2011-01-01 00:00:00

abstract：:The Escherichia coli outer membrane protein Tsx functions as a nucleoside-specific channel and serves as the receptor for colicin K and a number of T-even-type bacteriophages, including phage T6. To identify those segments of the Tsx protein that are important for its phage receptor function, we devised a selection an...

journal_title：Journal of bacteriology

authors： Schneider H,Fsihi H,Kottwitz B,Mygind B,Bremer E

更新日期：1993-05-01 00:00:00

abstract：:The gap-2 gene, encoding the NAD(P)-dependent D-glyceraldehyde-3-phosphate dehydrogenase (GAPDH2) of the cyanobacterium Synechocystis sp. strain PCC 6803, was cloned by functional complementation of an Escherichia coli gap mutant with a genomic DNA library; this is the first time that this cloning strategy has been us...

journal_title：Journal of bacteriology

authors： Valverde F,Losada M,Serrano A

更新日期：1997-07-01 00:00:00

abstract：:Sites of transposon Tn7 insertion in the Escherichia coli chromosome were examined, and two distinct classes of target sites differing in nucleotide sequence were identified. The target site choice was found to be determined by Tn7-encoded transposition genes. ...

journal_title：Journal of bacteriology

authors： Kubo KM,Craig NL

更新日期：1990-05-01 00:00:00

abstract：:Group I introns are inserted into genes of a wide variety of bacteriophages of gram-positive bacteria. However, among the phages of enteric and other gram-negative proteobacteria, introns have been encountered only in phage T4 and several of its close relatives. Here we report the insertion of a self-splicing group I ...

journal_title：Journal of bacteriology

authors： Bonocora RP,Shub DA

更新日期：2004-12-01 00:00:00

abstract：:Expression of the Escherichia coli leuV operon, which contains three tRNA(1)(Leu) genes, is regulated by several mechanisms including growth-rate-dependent control (GRDC) and stringent control (SC). Structural variants of the leuV promoter which differentially affect these regulatory responses have been identified, su...

journal_title：Journal of bacteriology

authors： Pokholok DK,Redlak M,Turnbough CL Jr,Dylla S,Holmes WM

更新日期：1999-09-01 00:00:00

abstract：:A novel of Escherichia coli endopeptidase was used for a selective partial hydrolysis of the peptide bridges which interlink the glycan chains in E. coli sacculi. The loosening of the murein network revealed, in the electron microscope, a preferential orientation of the glycan chains, more or less perpendicular to the...

journal_title：Journal of bacteriology

authors： Verwer RW,Nanninga N,Keck W,Schwarz U

更新日期：1978-11-01 00:00:00