ArticleNucleic acids research2025
Lactococcal mobile genetic elements harbour a diverse phage defensome rich in restriction-modification systems.
Article in Nucleic acids research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
2 citing papers in PubMed.
- Comparative genomics and methylome profiling ofMicrobial genomics · 2026Article
- Revisiting lactococcal abortive infection-like antiphage systems: diversity, structures, and mechanisms.FEMS microbiology reviews · 2026Review
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Authors and funding
15 authors.
Funding
Abstract
The genomes of 43 distinct lactococcal strains were reconstructed by a combination of long- and short-read sequencing, resolving the plasmid complement and methylome of these strains. The genomes comprised 43 chromosomes of approximately 2.5 Mb each and 269 plasmids ranging from 2 to 211 kb (at an average occurrence of 6 per strain). A total of 953 antiphage genes representing 538 phage defence systems were identified in the 43 strains and were catalogued and cross-correlated with co-occurrent mobile elements, which indicated that almost 60% of these systems are predicted to be mobile. Detailed analysis established that restriction-modification (R-M) systems form a significant portion of this mobile phage defensome. As such, all detected Type I, II, and III-associated methylated motifs (46 of which were unique to this study) were matched to their corresponding methylating enzymes by homology detection or molecular cloning. The cumulative antiphage activity of selected systems and the ability of truncated R-M genes to contribute to methylation were demonstrated. This study reveals, for the first time, the dairy lactococcal plasmidome to be a rich reservoir of orphan HsdS-encoding genes, in a comprehensive survey of (mobile) phage defence systems in lactic acid bacteria.
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