title: Nucleotide sequence of the surface exclusion genes traS and traT from the IncF0 lac plasmid pED208.
abstract: pED208 is a 90-kilobase conjugative plasmid belonging to the incompatibility group IncF0 lac. The surface exclusion system from this plasmid was cloned and sequenced, and two genes demonstrated exclusion ability. traS encoded a 186-amino-acid hydrophobic protein which, when transcribed from a vector promoter, caused exclusion of pED208. The product of traT (TraTp) was a 245-residue protein which was highly expressed independently of a vector promoter in Escherichia coli minicells. The TraTp from pED208 was homologous with traT products from the IncF plasmids R-100 and F (80% homology), but recombinants containing the pED208 surface exclusion system excluded F poorly.
mesh_terms: D001483:Base Sequence; D003001:Cloning, Molecular; D003429:Cross Reactions; D004262:DNA Restriction Enzymes / Q000378:metabolism; D004269:DNA, Bacterial / Q000032:analysis; D015247:Deoxyribonuclease HindIII; D015252:Deoxyribonucleases, Type II Site-Specific; D005798:Genes, Bacterial; D008970:Molecular Weight; D010957:Plasmids; D011487:Protein Conformation
chemical_list: D004269:DNA, Bacterial; D004262:DNA Restriction Enzymes; D015247:Deoxyribonuclease HindIII; C034510:CTCGAG-specific type II deoxyribonucleases; D015252:Deoxyribonucleases, Type II Site-Specific