We have examined nutritional factors influencing conjugal transfer of the two nonsymbiotic large plasmids, pRmeGR4a and pRmeGR4b, of Rhizobium meliloti GR4. To monitor transfer, each plasmid was tagged with a different antibiotic resistance marker. Transfer of plasmid pRmeGR4b was dependent upon the presence of plasmid pRmeGR4a on the same donor cell. Transconjugants for pRmeGR4b were obtained ...

Horizontal gene transfer (HGT) contributes greatly to the plasticity and evolution of prokaryotic and eukaryotic genomes. The main carriers of foreign DNA in HGT are mobile genetic elements (MGEs) that have extremely diverse genetic structures and properties. Various strategies are used for the maintenance and spread of MGEs, including (i) vegetative replication, (ii) transposition (and other t...

Insulin sensitivity was measured by insulin tolerance test using KITT as an index of insulin mediated glucose metabolism in 9 non-obese healthy offspring of conjugal diabetic parents (OCDP) and 9 non-obese NIDDM patients. The mean KITT value in the offspring of conjugal diabetic parents was 3.85 +/- 1.64 min-1 x 100 which was lower (P < 0.05) than the value of 5.49 +/- 1.9 min-1 x 100 in the co...

Resumo Este estudo é parte de uma pesquisa mais ampla sobre separação na transição para a parentalidade. Diante do crescente índice pedidos conjugal por mulheres, objetivamos investigar repercussões da dissolução as parentalidade, em sua perspectiva. Como referencial teórico, utilizamos estudos psicanalíticos, sistêmicos e psicossociais. Realizamos 12 entrevistas com mulheres das camadas médias...

HE fertility factor, F, controls conjugal fertility of Escherichia coli Kl2 ( LEDERBERG, CAVALLI and LEDERBERG 1952; HAYES 1953). F also determines functions such as immunity to superinfection by a second F factor (MAAS 1963) ; growth inhibition of certain phages such as tau ( 7 ) (HAKURA, OTSUJI and HIROTA 1964) , T7 ( MAKEL;~, MAKEL;~ and SOIKKELI 1964), and T3 ( SCHELL et al. 1963) ; and for...