• the toxin genes were determined to be carried by a lambdoid prophage homologous to stx -encoding phages found in STEC ( 13 ). (cdc.gov)
  • Calef, Neubauer: Active and inactive states of the cI gene in some lambda defective phages. (vhled.cz)
  • Analysis of the prophage arrays generated by sequentially integrated CTX phages revealed that pathogenic V. cholerae O139 Calcutta probably arose via infection of an O139 CTX(ET)phi lysogen by CTX(calc)phi. (omicsdi.org)
  • 2021. Analysis of viromes and microbiomes from pig fecal samples reveals that phages and prophages rarely carry antibiotic resistance genes. (ulaval.ca)
  • however, the toxin genes are not associated with a complete prophage genome ( 4 , 5 ). (cdc.gov)
  • In contrast to the toxin genes in S. dysenteriae 1, those in STEC are generally carried by lambdoid prophages, which integrate into the host bacterial chromosome ( 9 ). (cdc.gov)
  • These viruses are known as prophages, or lysogenic viruses, which can control what genes the host expresses and even its metabolism. (canadianmanufacturing.com)
  • The sequences and organization of these genes strongly resemble that of homologous phage genes, so the known GTA systems are generally thought to have descended from what were integrated prophages. (fieldofscience.com)
  • Rho is not only involved in horizontally acquired gene silencing but also in prophage maintenance, which can be seen as an adaptation of the host to maintain prophage genes. (idref.fr)
  • But when a lysogenic virus detects an adverse shift in the environment, or if the host is defective, the prophage becomes virulent and destroys the host cell. (canadianmanufacturing.com)
  • Neubauer: Prophage deletions selected by heat induction of bacteria lysogenic for lambda int6cI857. (vhled.cz)
  • The mechanism by which latent viruses, such as genetically transmitted tumor viruses ( PROVIRUSES ) or PROPHAGES of lysogenic bacteria, are induced to replicate and then released as infectious viruses. (lookformedical.com)
  • A lytic phase will cause cell lysis whereas in lysogenic phase the phage becomes integrated into the host genome and becomes a prophage. (biomedcentral.com)
  • Insertion sequences flanking the stx region suggest that gene rearrangements occurred and resulted in a defective phage. (cdc.gov)
  • Mu-derived plasmids transferred from pAV2 − strains of EBF65/65 back to E. coli K12 were found to carry defective prophages which had lost the abilityto produce detectable phage particles. (microbiologyresearch.org)
  • Vihanov , Neubauer: Phage and prophage decision in defective Lambda lysogens: the role of cII product. (vhled.cz)
  • Prophages are important as they often encode additional factors not directly linked to phage production that may provide an evolutionary advantage to the bacterial host enabling survival of the embedded prophage. (biomedcentral.com)
  • Results: Here we report the genome sequence of P. aeruginosa PAO1161 laboratory strain, a leu-, Rif R , restriction- modification defective PAO1 derivative, described as the host of IncP-8 plasmid FP2, conferring the resistance to mercury. (waw.pl)
  • Calef, Neubauer: Active-inactive phase variation in cI gene of lambda prophage. (vhled.cz)
  • As prophages may be beneficial to their hosts, we hypothesize that hosts adapted strategies for maintaining that gene source. (idref.fr)
  • Since prophages integrate into and excise from the host chromosome through site-specific recombination (SSR), we investigated whether regulation of SSR at the level of gene expression could be involved in the maintenance process. (idref.fr)
  • Re-transfer of these defective plasmids from hsm k + and hsm k strains of E. coli K12 back to EBF65/65, when compared with the transfer of RP4, provided evidence for a second restriction/modification system in EBF65/65 which affected mainly Mu DNA. (microbiologyresearch.org)
  • We will continue to construct fusions between N-terminal tail fiber region of a broad host tailocin and the putative C-terminal portions of tail spike from BT-1 prophages to obtain active tailocins against Liberibacter. (citrusrdf.org)
  • Neubauer: Prophage mutants unable to kill the host upon induction. (vhled.cz)
  • Pour ces prophages, qu'ils soient défectifs ou fonctionnels, leur induction par inactivation de Rho, fait intervenir une nouvelle voie d'induction lytique indépendante de la voie classique via la réponse SOS.Ces interactions hôtes-virus reflète la coévolution de ces microorganismes, qui permet l'acquisition de gènes via le transfert horizontal tout en contrôlant l'expression des gènes délétères. (idref.fr)
  • For these prophages, whether defective or functional, their induction by the inactivation of Rho, involves a new pathway of lysogeny escape, which is independent of the classical pathway via the SOS response. (idref.fr)
  • Vihanov , Neubauer: Odstran n a obnoven imunity po UV oz en lysogen a role cII produktu. (vhled.cz)
  • Our results suggest that lysogeny maintenance of a class of prophages, which all share a same unusual genetic organization, are controlled by the transcription termination factor Rho. (idref.fr)
  • Five classes of mutants of Methylophilus methylotrophus which are defective in methanol oxidation (Mox - ) have been isolated, partially characterized, and complemented using a Sau 3A genomic library. (microbiologyresearch.org)
  • Prophages and plasmids that were present in the original K-12 strain (F, l, e14, rac) are normally listed only if absent. (neb.com)