Abstract:
:Tests for utilization of d-octopine and nopaline in defined media containing a carbon and nitrogen source were made on 60 strains of Agrobacterium representing four species and on a representative of each of five species of Rhizobium. Among 46 virulent strains of Agrobacterium, only two strains were found which utilized neither compound, while three strains were found which could utilize both. Of the remaining virulent strains, 27 utilized octopine and 14 utilized nopaline. Each of six strains of A. rhizogenes tested utilized only octopine but at a slower rate relative to growth than most A. tumefaciens. All eight of the A. radiobacter strains failed to utilize either compound, as did four of six nonvirulent strains of A. tumefaciens. The rhizobia did not utilize octopine or, with the possible exception of R. japonicum, nopaline. Virulence in the genus Agrobacterium is concluded to be highly correlated with the ability to utilize one or both of these compounds.
journal_name
J Bacterioljournal_title
Journal of bacteriologyauthors
Lippincott JA,Beiderbeck R,Lippincott BBdoi
10.1128/JB.116.1.378-383.1973subject
Has Abstractpub_date
1973-10-01 00:00:00pages
378-83issue
1eissn
0021-9193issn
1098-5530journal_volume
116pub_type
杂志文章abstract::The Klebsiella aerogenes hutUH operon is preceded by a promoter region, hut(P), that contains two divergent promoters (hutUp and Pc) which overlap and are alternately expressed. In the absence of the catabolite gene activator protein-cyclic AMP (CAP-cAMP) complex, Pc is predominantly expressed while hutUp is largely r...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.176.17.5513-5524.1994
更新日期:1994-09-01 00:00:00
abstract::Periplasmic membrane fusion proteins (MFPs) are essential components of multidrug efflux pumps and type I protein secretion systems of gram-negative bacteria. Located in the periplasm, MFPs function by creating a physical link between inner membrane transporters and outer membrane channels. The most conserved sequence...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00204-09
更新日期:2009-07-01 00:00:00
abstract::Fertility factor F confers bacterial conjugation, a process which involves at least 20 tra genes. Resistance plasmids such as R100, R6-5, and R1 have homology with F in the tra region. Conjugal transfer of these plasmids is, however, repressed, while transfer of F is constitutive. Repression of R transfer is due to th...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.169.2.619-623.1987
更新日期:1987-02-01 00:00:00
abstract:UNLABELLED:The GlnPQ transporter from Lactococcus lactis has the remarkable feature of having two substrate-binding domains (SBDs) fused to the N terminus of the transmembrane domain (TMD), and thus four SBDs are present in the homodimeric complex. Although X-ray structures and ligand binding data are available for bot...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00685-15
更新日期:2015-11-09 00:00:00
abstract::Sinorhizobium meliloti is a soil-dwelling alphaproteobacterium that engages in a nitrogen-fixing root nodule symbiosis with leguminous plants. Cell surface polysaccharides are important both for adapting to stresses in the soil and for the development of an effective symbiotic interaction. Among the polysaccharides ch...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00501-17
更新日期:2018-01-10 00:00:00
abstract::The interaction of Streptococcus pyogenes (group A streptococcus [GAS]) with its human host requires several surface proteins. In this study, we isolated mutations in a gene required for the surface localization of protein F by transposon mutagenesis of the M6 strain JRS4. This gene (srtA) encodes a protein homologous...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.184.8.2181-2191.2002
更新日期:2002-04-01 00:00:00
abstract::A systematic survey for the presence of plasmids in 17 different xenobiotic-degrading Sphingomonas strains was performed. In almost all analyzed strains, two to five plasmids with sizes of about 50 to 500 kb were detected by using pulsed-field gel electrophoresis. A comparison of plasmid preparations untreated or trea...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.186.12.3862-3872.2004
更新日期:2004-06-01 00:00:00
abstract::The replication order of markers was studied in Bacillus subtilis strains bearing the trpE26 mutation by the use of the density transfer technique. An important difference in this order was observed in comparison with that of strain 168 T-. All markers tested of a chromosome segment extending from trpD to ilvA replica...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.122.3.886-898.1975
更新日期:1975-06-01 00:00:00
abstract::The organization and transcriptional control of chromosomal cat genes (required for dissimilation of catechol by the beta-ketoadipate pathway) in the Pseudomonas putida biotype strain (ATCC 12633) are reported. Nucleotide sequence reveals that catR is separated by 135 bp from the divergently transcribed catBC,A; catC ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.177.2.401-412.1995
更新日期:1995-01-01 00:00:00
abstract::A spontaneously arising regulatory mutant of the gluconate system in Escherichia coli was isolated. This mutant became constitutive, probably in one step, for gluconate high-affinity transport, gluconokinase, and gluconate-6-P dehydrase. The mutation involved (gntR18) is cotransducible with asd. Pseudorevertants, deri...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.114.2.469-473.1973
更新日期:1973-05-01 00:00:00
abstract::During nitrogen-limited growth, transcription of glnA, which codes for glutamine synthetase, requires sigma 54-RNA polymerase and the phosphorylated from the nitrogen regulator I (NRI; also called NtrC). In cells in which the lac promoter controlled expression of the gene coding for NRI, increasing the intracellular c...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.174.1.179-185.1992
更新日期:1992-01-01 00:00:00
abstract::Controlled acetolysis of yeast mannans yields mixtures of oligosaccharides with (1-->2) and (1-->3) linkages between the mannose units, whereas the less stable (1-->6) linkages of the polysaccharide backbone are cleaved. The "fingerprints," obtained by gel filtration of the oligosaccharide mixtures, can be used to dis...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.100.3.1175-1181.1969
更新日期:1969-12-01 00:00:00
abstract::Clostridium difficile is the etiological agent of antibiotic-associated diarrhea. Among the factors that may play a role in infection are S-layer proteins (SLPs). Previous work has shown these to consist mainly of two components, resulting from the cleavage of a precursor encoded by the slpA gene. The high-molecular-w...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.184.14.3886-3897.2002
更新日期:2002-07-01 00:00:00
abstract::Tn2603 is a multiple-resistance transposon encoding resistance to ampicillin, streptomycin, sulfonamide, and mercury and having a molecular size of 20 kilobase pairs, with 200-base-pair inverted repeats at both ends. The essential sites and functions of Tn2603 which are required for its transposition were determined t...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.151.2.723-728.1982
更新日期:1982-08-01 00:00:00
abstract::Dehalogenases play key roles in the detoxification of halogenated aromatics. Interestingly, only one hydrolytic dehalogenase for halogenated aromatics, 4-chlorobenzoyl-coenzyme A (CoA) dehalogenase, has been reported. Here, we characterize another novel hydrolytic dehalogenase for a halogenated aromatic compound from ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.01547-09
更新日期:2010-06-01 00:00:00
abstract::Escherichia coli strains mutant in the starvation gene cstC grow normally in a mineral salts medium but are impaired in utilizing amino acids as nitrogen sources. They are also compromised in starvation survival, where amino acid catabolism is important. The cstC gene encodes a 406-amino-acid protein that closely rese...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.180.16.4287-4290.1998
更新日期:1998-08-01 00:00:00
abstract::The serotype 5 capsule gene cluster of Staphylococcus aureus comprises 16 genes (cap5A through cap5P), but little is known about how the putative gene products function in capsule biosynthesis. We propose that the N-acetylmannosaminuronic acid (ManNAcA) component of the S. aureus serotype 5 capsular polysaccharide (CP...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.181.16.4818-4824.1999
更新日期:1999-08-01 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::Regulation of the cadA cadmium and zinc resistance determinant of Staphylococcus aureus plasmid pI258 was demonstrated by using gene fusions and direct measurements of transcription. In growth experiments, cells harboring the intact cadA operon were induced with different cations and challenged by an inhibitory concen...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.173.23.7643-7649.1991
更新日期:1991-12-01 00:00:00
abstract::Pertussis toxin (PT), the major virulence factor of Bordetella pertussis, is composed of five different subunits whose genes are organized as an operon. We report the mapping of the promoter region of the PT operon and show that this promoter is only weakly active in Escherichia coli. Bordetella parapertussis and Bord...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.169.6.2843-2846.1987
更新日期:1987-06-01 00:00:00
abstract:UNLABELLED:Streptococcus pneumoniae is able to integrate exogenous DNA into its genome by natural genetic transformation. Transient accumulation of high levels of the only S. pneumoniae alternative σ factor is insufficient for development of full competence without expression of a second competence-specific protein, Co...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.00354-16
更新日期:2016-08-11 00:00:00
abstract::The tyrT (tRNA(1TYr)) locus of Escherichia coli B differs structurally from that of K-12 strains by the absence of 2 of 3.14 terminal repeat sequences. ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.178.8.2469-2470.1996
更新日期:1996-04-01 00:00:00
abstract::Expression of the Escherichia coli proU operon, which encodes an efficient uptake system for the osmoprotectant glycine betaine, is strongly increased in cells grown at high osmolarity. We isolated 182 independent spontaneous mutants with elevated expression of the chromosomal phi(proV-lacZ) (Hyb2) fusion at low osmol...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.173.2.801-809.1991
更新日期:1991-01-01 00:00:00
abstract::In streptococcal species, the key step of competence development is the transcriptional induction of comX, which encodes the alternative sigma factor sigma(X), which positively regulates genes necessary for DNA transformation. In Streptococcus species belonging to the mitis and mutans groups, induction of comX relies ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.01251-09
更新日期:2010-03-01 00:00:00
abstract::Abram, Dinah (Purdue University, Lafayette, Ind.), A. E. Vatter, and Henry Koffler. Attachment and structural features of flagella of certain bacilli. J. Bacteriol. 91:2045-2068. 1966.-The attachment of flagella to cells of various mesophilic and thermophilic strains of Bacillus was studied electron microscopically. S...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.91.5.2045-2068.1966
更新日期:1966-05-01 00:00:00
abstract::The cobB function of Salmonella typhimurium LT2 was defined in vivo as an alternative activity for the nicotinic acid mononucleotide:5,6-dimethylbenzimidazole phosphoribosyltransferase enzyme (CobT), which is involved in the assembly of the nucleotide loop of cobalamin in this bacterium (J. R. Trzebiatowski, G. A. O'T...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.178.23.7016-7019.1996
更新日期:1996-12-01 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
pub_type: 杂志文章
doi:10.1128/JB.00909-09
更新日期:2009-11-01 00:00:00
abstract::We screened Salmonella typhimurium, Citrobacter freundii, Klebsiella pneumoniae, Shigella boydii, and many isolates of Escherichia coli for DNA sequences homologous to those encoding each of two unrelated type I restriction and modification systems (EcoK and EcoA). Both K- and A-related hsd genes were identified, but ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.170.4.1775-1782.1988
更新日期:1988-04-01 00:00:00
abstract::Edwards, P. R. (Communicable Disease Center, U.S. Public Health Service, Atlanta, Ga.), R. Sakazaki, and I. Kato. Natural occurrence of four reversible flagellar phases in cultures of Salmonella mikawashima. J. Bacteriol. 84:99-103. 1962-Study of cultures of Salmonella mikawashima isolated from reptiles revealed that ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/JB.84.1.99-103.1962
更新日期:1962-07-01 00:00:00
abstract::RNase D is a 3'-exoribonuclease whose in vitro specificity has suggested that it is involved in the processing of tRNA precursors. Its in vivo role has remained unclear, however, because mutant cells devoid of the enzyme display no defect in growth or tRNA processing. To learn more about the structure and function of ...
journal_title:Journal of bacteriology
pub_type: 杂志文章
doi:10.1128/jb.170.2.522-527.1988
更新日期:1988-02-01 00:00:00