ArticleNucleic acids research2021
IncC helper dependent plasmid-like replication of Salmonella Genomic Island 1.
Article in Nucleic acids research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed, 19 citations in OpenAlex.
- Conjugative transfer inhibition of IncA and IncC plasmids by SGI1-like elements via relaxosome assembly interference.Nucleic acids research · 2026Article
- Genetic Elements Associated with the Acquired Resistome of the Gut Microbiota in a Broiler Rooster Flock in Hungary.Animals : an open access journal from MDPI · 2026Article
- Interactions and evolutionary relationships among bacterial mobile genetic elements.Nature reviews. Microbiology · 2025Review
- Surface exclusion of IncC conjugative plasmids and their relatives.PLoS genetics · 2024Article
- Multidrug resistance inApplied and environmental microbiology · 2024Article
- Two birds with one stone: SGI1 can stabilize itself and expel the IncC helper by hijacking the plasmid parABS system.Nucleic acids research · 2024Article
- Molecular characterization of IncFII plasmid carryingmSphere · 2023Article
- Conjugative IncC Plasmid Entry Triggers the SOS Response and Promotes Effective Transfer of the Integrative Antibiotic Resistance Element SGI1.Microbiology spectrum · 2023Article
- Evolution of Plasmid Mobility: Origin and Fate of Conjugative and Nonconjugative Plasmids.Molecular biology and evolution · 2022Article
- Salmonella Genomic Island 1 requires a self-encoded small RNA for mobilization.Molecular microbiology · 2021Article
- Crucial role of Salmonella genomic island 1 master activator in the parasitism of IncC plasmids.Nucleic acids research · 2021Article
- Genomic islands targeting dusA in Vibrio species are distantly related to Salmonella Genomic Island 1 and mobilizable by IncC conjugative plasmids.PLoS genetics · 2021Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The Salmonella genomic island 1 (SGI1) and its variants are mobilized by IncA and IncC conjugative plasmids. SGI1-family elements and their helper plasmids are effective transporters of multidrug resistance determinants. SGI1 exploits the transfer apparatus of the helper plasmid and hijacks its activator complex, AcaCD, to trigger the expression of several SGI1 genes. In this way, SGI1 times its excision from the chromosome to the helper entry and expresses mating pore components that enhance SGI1 transfer. The SGI1-encoded T4SS components and the FlhDC-family activator proved to be interchangeable with their IncC-encoded homologs, indicating multiple interactions between SGI1 and its helpers. As a new aspect of this crosstalk, we report here the helper-induced replication of SGI1, which requires both activators, AcaCD and FlhDCSGI1, and significantly increases the stability of SGI1 when coexists with the helper plasmid. We have identified the oriVSGI1 and shown that S004-repA operon encodes for a translationally coupled leader protein and an IncN2/N3-related RepA that are expressed under the control of the AcaCD-responsive promoter PS004. This replicon transiently maintains SGI1 as a 4-8-copy plasmid, not only stabilizing the island but also contributing to the fast displacement of the helper plasmid.
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