نتایج جستجو برای: plasmids
تعداد نتایج: 15167 فیلتر نتایج به سال:
Twenty different Pseudomonas strains utilizing m-toluate were isolated from oil-contaminated soil samples near Minsk, Belarus. Seventeen of these isolates carried plasmids ranging in size from 78 to about 200 kb (assigned pSVS plasmids) and encoding the meta cleavage pathway for toluene metabolism. Most plasmids were conjugative but of unknown incompatibility groups, except for one, which belon...
Analysis of the chromosomic beta-galactosidase activity in strains of Escherichia coli with and without plasmids indicated that plasmid maintenance enhances gene expression. Cyclic AMP (cAMP) determinations confirmed that the gene enhancement observed in strains carrying plasmids was due to a small increase in the intracellular concentration of cAMP. Also, cells carrying plasmids displayed high...
OBJECTIVES Small-diameter synthetic vascular graft performance is inferior to autologous vein grafts. This study tested the hypotheses that local in vivo administration of plasmids encoding for human vascular endothelial growth factor (VEGF), or co-administration of plasmids encoding for human vascular endothelial growth factor/plasmids encoding for fibroblast growth factor-2 in the tissues sur...
Minireplicons from the I-complex plasmids R387 (IncK) and pIE545 (IncZ) were constructed, and the nucleotide sequences of their replication regions were compared with that of the B plasmid, pMU720. The coding sequence of the putative replication protein, RepA, of each plasmid was located. RepA of K and B plasmids were homologous, whereas RepA of Z resembled RepA1 of FII plasmid. Sequences upstr...
Analyses of the Staphylococcus epidermidis multiresistance plasmids pSK697 and pSK818 have revealed them to be closely related to the trimethoprim resistance plasmid pSK639, also isolated from S. epidermidis. pSK697 and pSK818 were found to contain a cointegrated copy of a second plasmid related to the S. epidermidis multidrug antiseptic and disinfectant resistance plasmid pSK108 and the S. aur...
Four recombinant plasmids coding for human lymphotoxin (LT) were constructed with genomic DNA (gDNA) or cDNA sequences. The simian virus 40 (SV40) early region, which contains the early promoter, an intron of the small-t-antigen-encoding gene, and polyadenylation signal sequences, was used for transcriptional and post-transcriptional regulatory elements in the construction of these plasmids. Tw...
Staphylococci are increasingly aggressive human pathogens suggesting that active evolution is spreading novel virulence and resistance phenotypes. Large staphylococcal plasmids commonly carry antibiotic resistances and virulence loci, but relatively few have been completely sequenced. We determined the plasmid content of 280 staphylococci isolated in diverse geographical regions from the 1940s ...
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