Abstract:
:A conjugation system initially discovered in beta-lactamase-producing gonococci mobilized small non-selftransmissible R plasmids encoding beta-lactamase (penicillinase) production into other gonococci, Neisseria, and Escherichia coli. This conjugation system was mediated by a separate selftransmissible plasmid of 23.9 X 10(6) daltons, pFA2. Conjugative plasmids capable of mobilizing R plasmids were also found in nearly 8% of the non-penicillinase-producing gonococci. These were similar to pFA2 in size, buoyant density, and restriction endonuclease digest patterns but were less efficient than pFA2 in mobilization of the penicillinase plasmid pFA3. The presence of conjugative plasmids in gonococci isolated before the appearance of penicillinase-producing strains indicates that a conjugation system for plasmid transfer predated the appearance of R plasmids in gonococci.
journal_name
J Bacterioljournal_title
Journal of bacteriologyauthors
Sox TE,Mohammed W,Blackman E,Biswas G,Sparling PFdoi
10.1128/JB.134.1.278-286.1978subject
Has Abstractpub_date
1978-04-01 00:00:00pages
278-86issue
1eissn
0021-9193issn
1098-5530journal_volume
134pub_type
杂志文章abstract::A temperature-sensitive Schizosaccharomyces pombe mutant, cdc16-116, has been isolated which undergoes uncontrolled septation during its cell division cycle. The mutant accumulates two types of cells after 3 h of growth at the restrictive temperature: (i) type I cells (85% of the population), which complete nuclear di...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.137.1.440-446.1979
更新日期:1979-01-01 00:00:00
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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::We have previously identified three sites, named sbi, ihfA, and sbyA, specifically recognized or bound by the TraI, IHF, and TraY proteins, respectively; these sites are involved in nicking at the origin of transfer, oriT, of plasmid R100. In the region next to these sites, there exists the sbm region, which consists ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.177.15.4350-4355.1995
更新日期:1995-08-01 00:00:00
abstract::Following conjugal transfer of the hsdK genes (hsdRK, hsdMK, and hsdSK) of Escherichia coli K-12, restriction activity was first detected only after approximately 15 generations, whereas modification activity was observed immediately. This sequential expression explains the establishment of hsdK genes in a nonmodified...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.175.15.4905-4906.1993
更新日期:1993-08-01 00:00:00
abstract::The enzyme pattern of Saccharomyces cerevisiae was followed during batch growth and in continuous culture in a synthetic medium limited for glucose under aerobic conditions. Seven enzymes were measured: succinate-cytochrome c oxidoreductase, malate dehydrogenase, nicotinamide adenine dinucleotide-linked glutamate dehy...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.96.2.479-486.1968
更新日期:1968-08-01 00:00:00
abstract::Proteus rettgeri and Escherichia coli W were shown to express structurally different penicillin G acylases. The enzymes had similar substrate specificity but differed in molecular weight, isoelectric point, and electrophoretic mobility in polyacrylamide gels and did not antigenically cross-react. When the organisms we...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.163.3.925-932.1985
更新日期:1985-09-01 00:00:00
abstract::A pentachlorophenol (PCP) hydroxylase which catalyzed the conversion of PCP to 2,3,5,6-tetrachlorohydroquinone and released iodide from triiodophenol in the presence of NADPH and oxygen was identified. The enzyme was purified by protamine sulfate precipitation, ammonium sulfate precipitation, hydrophobic chromatograph...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.173.14.4447-4453.1991
更新日期:1991-07-01 00:00:00
abstract::Cultures of the inducible penicillinase-producing strain 749 of Bacillus licheniformis, induced with small amounts of benzylpenicillin, synthesized penicillinase at a high rate for a short period, after which the rate of synthesis slowly declined. During the period of active synthesis, the rate of secretion, as a frac...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.97.2.820-826.1969
更新日期:1969-02-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.02107-12
更新日期:2013-05-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.187.12.3980-3989.2005
更新日期:2005-06-01 00:00:00
abstract::Proteins of the YidC/OxaI/Alb3 family play a crucial role in the insertion, folding, and/or assembly of membrane proteins in prokaryotes and eukaryotes. Bacillus subtilis has two YidC-like proteins, denoted SpoIIIJ and YqjG. SpoIIIJ and YqjG are largely exchangeable in function, but SpoIIIJ has a unique role in sporul...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.01084-13
更新日期:2014-04-01 00:00:00
abstract::Pediococcus halophilus X-160 which lacks catabolite control by glucose was isolated from nature (soy moromi mash). Wild-type strains, in xylose-glucose medium, utilized glucose preferentially over xylose and showed diauxic growth. With wild-type strain I-13, xylose isomerase activity was not induced until glucose was ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.171.4.1793-1800.1989
更新日期:1989-04-01 00:00:00
abstract::Defective phage lambdadg, when present in certain Salmonella typhosa hybrids, could be eliminated with acridine orange or ethidium bromide treatment. The lambdadg deoxyribonucleic acid could be separated from the S. typhosa host deoxyribonucleic acid as a distinctly covalently closed molecule. ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.102.1.288-290.1970
更新日期:1970-04-01 00:00:00
abstract::Campylobacter jejuni, a microaerophilic bacterium, is the most frequent cause of human bacterial gastroenteritis. C. jejuni is exposed to harmful reactive oxygen species (ROS) produced during its own normal metabolic processes and during infection from the host immune system and from host intestinal microbiota. These ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.05740-11
更新日期:2012-01-01 00:00:00
abstract::Korormicin is an antibiotic produced by some pseudoalteromonads which selectively kills Gram-negative bacteria that express the Na+-pumping NADH:quinone oxidoreductase (Na+-NQR.) We show that although korormicin is an inhibitor of Na+-NQR, the antibiotic action is not a direct result of inhibiting enzyme activity. Ins...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00718-18
更新日期:2019-05-08 00:00:00
abstract::The degree to which deoxyribonucleic acid segregates nonrandomly has been investigated for Escherichia coli B/r growing in different media. The degree of nonrandom segregation observed is dependent on the medium, with segregation becoming less random as the growth rate decreases. This indicates that there must be some...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.130.1.118-127.1977
更新日期:1977-04-01 00:00:00
abstract::In both prokaryotes and eukaryotes, hydroxyurea is suggested to inhibit DNA replication by inactivating ribonucleotide reductase and depleting deoxyribonucleoside triphosphate pools. In this study, we show that the inhibition of replication in Escherichia coli is transient even at concentrations of 0.1 M hydroxyurea a...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00713-17
更新日期:2018-02-23 00:00:00
abstract::The Firmicutes Thermoanaerobacter sulfurigignens and Thermoanaerobacterium thermosulfurigenes convert thiosulfate, forming sulfur globules inside and outside cells. X-ray absorption near-edge structure analysis revealed that the sulfur consisted mainly of sulfur chains with organic end groups similar to sulfur formed ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00782-07
更新日期:2007-10-01 00:00:00
abstract::The initiation process of deoxyribonucleic acid (DNA) replication in Escherichia coli has been studied using the thermoreversible dna initiation mutant E. coli HfrHl65/120/6 dna-252. This dna mutation was incorrectly classed as a dnaA mutation. Biochemical and genetic evidence suggests that the dna-252 mutant is a nov...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.129.3.1476-1486.1977
更新日期:1977-03-01 00:00:00
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journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.01409-08
更新日期:2009-02-01 00:00:00
abstract::Cores are large, rod-shaped structures that have been found almost exclusively in group D streptococci, measure 0.1 to 0.16 mum in diameter, and extend the width or length of cells. This study has shown that cores are produced in the cells at a reproducible point in early stationary growth after extensive mesosomal fo...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.129.1.445-456.1977
更新日期:1977-01-01 00:00:00
abstract::OxyR is a DNA binding protein that differentially regulates a cell's response to hydrogen peroxide-mediated oxidative stress. We previously reported that the reduced form of OxyR is sufficient for repression of transcription of agn43 from unmethylated template DNA, which is essential for deoxyadenosine methylase (Dam)...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.185.7.2203-2209.2003
更新日期:2003-04-01 00:00:00
abstract::Random transposon Tn5 mutagenesis of Bradyrhizobium sp. (Arachis) strain NC92, a member of the cowpea cross-inoculation group, was carried out, and kanamycin-resistant transconjugants were tested for their symbiotic phenotype on three host plants: groundnut, siratro, and pigeonpea. Two nodulation (Nod- phenotype) muta...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.169.5.2177-2186.1987
更新日期:1987-05-01 00:00:00
abstract::Mushin, Rose (University of Melbourne, Victoria, Australia) and Frances M. Ashburner. Gastrointestinal microflora of mutton birds (Puffinus tenuirostris) in relation to "limy" disease. J. Bacteriol. 83:1260-1267. 1962.-The aerobic bacterial intestinal flora of mutton birds, healthy and affected with "limy" disease, wa...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.83.6.1260-1267.1962
更新日期:1962-06-01 00:00:00
abstract::Adaptation of Lactococcus lactis towards progressive carbon starvation is mediated by three different types of transcriptomic responses: (i) global responses, i.e., general decreases of functions linked to bacterial growth and lack of induction of the general stress response; (ii) specific responses functionally relat...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.187.10.3589-3592.2005
更新日期:2005-05-01 00:00:00
abstract::The promoter region of the pColV-K30-encoded operon specifying biosynthesis and transport of the siderophore aerobactin was subjected to deletion analysis to determine the smallest DNA sequence affording iron regulation of a iucA'-'lacZ gene fusion. A 78-base-pair (bp) region containing the main (P1) promoter retained...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.169.6.2624-2630.1987
更新日期:1987-06-01 00:00:00
abstract::The vitamin requirements of the group Q streptococci (Streptococcus avium) and the established enterococcal species (S. faecalis and S. faecium) paralleled one another, although S. avium did not characteristically require riboflavine or pyridoxal. S. avium was further differentiated in that it required thymine for gro...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.94.2.297-299.1967
更新日期:1967-08-01 00:00:00
abstract::In the bacterium Escherichia coli, oxidized pyrimidines are removed by two DNA glycosylases, endonuclease III and endonuclease VIII (endo VIII), encoded by the nth and nei genes, respectively. Double mutants lacking both of these activities exhibit a high spontaneous mutation frequency, and here we show that all of th...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.181.20.6396-6402.1999
更新日期:1999-10-01 00:00:00
abstract::In Escherichia coli K-12, expression of the lysU gene is regulated by the lrp gene product, as indicated by an increase in the level of lysyl-tRNA synthetase activity and LysU protein in an lrp mutant. Comparison of the patterns of protein expression visualized by two-dimensional gel electrophoresis indicated that Lys...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.174.9.2779-2784.1992
更新日期:1992-05-01 00:00:00
abstract::A key reaction in the biosynthesis of menaquinone involves the conversion of the soluble bicyclic naphthalenoid compound 1, 4-dihydroxy-2-naphthoic acid (DHNA) to the membrane-bound demethylmenaquinone. The enzyme catalyzing this reaction, DHNA-octaprenyltransferase, attaches a 40-carbon side chain to DHNA. The menA g...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.180.10.2782-2787.1998
更新日期:1998-05-01 00:00:00