{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,4]],"date-time":"2022-04-04T08:54:20Z","timestamp":1649062460025},"reference-count":11,"publisher":"Hindawi Limited","issue":"1","license":[{"start":{"date-parts":[[2009,4,14]],"date-time":"2009-04-14T00:00:00Z","timestamp":1239667200000},"content-version":"unspecified","delay-in-days":13952,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Genet. Res."],"published-print":{"date-parts":[[1971,2]]},"abstract":"<jats:title>SUMMARY<\/jats:title><jats:p>Derepressed mutants of F-like transfer factors, isolated by mutagenesis, were characterized as repressor-minus (<jats:italic>i<\/jats:italic><jats:sup>\u2212<\/jats:sup>) or operator-constitutive (<jats:italic>o<\/jats:italic><jats:sup>c<\/jats:sup>). Mutants of the <jats:italic>i<\/jats:italic><jats:sup>\u2212<\/jats:sup> class are derepressed in K12 but repressed in <jats:italic>Salmonella typhimurium<\/jats:italic>. They are derepressed in <jats:italic>S. typhimurium<\/jats:italic> by a kanamycin resistance determinant carrying a locus <jats:italic>der<\/jats:italic>, described previously. Most <jats:italic>o<\/jats:italic><jats:sup>c<\/jats:sup> mutants of F-like factors are derepressed in both K 12 and <jats:italic>S. typhimurium<\/jats:italic>. However, one mutant of F-<jats:italic>lac<\/jats:italic> was <jats:italic>o<\/jats:italic><jats:sup>c<\/jats:sup> in K12 but was repressed in <jats:italic>S. typhimurium<\/jats:italic>. It was derepressed by <jats:italic>der<\/jats:italic>. Repression by <jats:italic>S. typhimurium<\/jats:italic> is different from that by <jats:italic>fi<\/jats:italic><jats:sup>+<\/jats:sup> factors, since <jats:italic>der<\/jats:italic> reverses the former but does not affect the latter. Possible interpretations of these findings are discussed.<\/jats:p>","DOI":"10.1017\/s0016672300012052","type":"journal-article","created":{"date-parts":[[2009,9,17]],"date-time":"2009-09-17T07:53:05Z","timestamp":1253173985000},"page":"89-93","source":"Crossref","is-referenced-by-count":11,"title":["The effects of <i>Salmonella typhimurium<\/i> on derepressed mutants of F-like factors"],"prefix":"10.1155","volume":"17","author":[{"given":"N. D. F.","family":"Grindley","sequence":"first","affiliation":[]},{"given":"E. S.","family":"Anderson","sequence":"additional","affiliation":[]},{"given":"H. R.","family":"Smith","sequence":"additional","affiliation":[]},{"given":"June N.","family":"Grindley","sequence":"additional","affiliation":[]}],"member":"98","published-online":{"date-parts":[[2009,4,14]]},"reference":[{"key":"S0016672300012052_ref010","doi-asserted-by":"publisher","DOI":"10.1017\/S0016672300002433"},{"key":"S0016672300012052_ref009","doi-asserted-by":"publisher","DOI":"10.1017\/S0016672300009538"},{"key":"S0016672300012052_ref006","first-page":"189","article-title":"Transfert de caract\u00e8res g\u00e9n\u00e9tiques par incorporation au facteur sexuel d'Escherichia coli","volume":"249","author":"Jacob","year":"1959","journal-title":"Comptes rendus des s\u00e9ances de l'Acad\u00e9mie des sciences"},{"key":"S0016672300012052_ref005","doi-asserted-by":"publisher","DOI":"10.1016\/0022-2836(70)90227-5"},{"key":"S0016672300012052_ref004","doi-asserted-by":"publisher","DOI":"10.1266\/jjg.37.66"},{"key":"S0016672300012052_ref003","doi-asserted-by":"publisher","DOI":"10.1038\/219869a0"},{"key":"S0016672300012052_ref002","doi-asserted-by":"publisher","DOI":"10.1038\/222349a0"},{"key":"S0016672300012052_ref011","doi-asserted-by":"publisher","DOI":"10.1017\/S0016672300002627"},{"key":"S0016672300012052_ref008","doi-asserted-by":"publisher","DOI":"10.1017\/S0016672300002123"},{"key":"S0016672300012052_ref007","doi-asserted-by":"publisher","DOI":"10.1016\/S0022-2836(61)80072-7"},{"key":"S0016672300012052_ref001","doi-asserted-by":"publisher","DOI":"10.1038\/208843a0"}],"container-title":["Genetical Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0016672300012052","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,12,31]],"date-time":"2020-12-31T22:46:53Z","timestamp":1609454813000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0016672300012052\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1971,2]]},"references-count":11,"journal-issue":{"issue":"1","published-print":{"date-parts":[[1971,2]]}},"alternative-id":["S0016672300012052"],"URL":"https:\/\/doi.org\/10.1017\/s0016672300012052","relation":{},"ISSN":["0016-6723","1469-5073"],"issn-type":[{"value":"0016-6723","type":"print"},{"value":"1469-5073","type":"electronic"}],"subject":[],"published":{"date-parts":[[1971,2]]}}}