title: Ant-mediated transactivation of early genes in Salmonella prophage P22 by superinfecting virulent P22 mutants.
abstract: The virulent mutants P22 virB vy and P22 vy mutants, both insensitive to mnt-repressor, transactivate the early genes of a P22 prophage. The transactivation of early P22 prophage genes depends strictly on the expression of gene ant ("antirepressor"-protein) by the superinfecting P22 mutant and therefore occurs by derepression.
mesh_terms: D005814:Genes, Viral; D005816:Genetic Complementation Test; D008242:Lysogeny; D010641:Phenotype; D012097:Repressor Proteins / Q000037:antagonists & inhibitors*; D012483:Salmonella Phages / Q000235:genetics*; D014157:Transcription Factors / Q000037:antagonists & inhibitors*
chemical_list: D012097:Repressor Proteins; D014157:Transcription Factors