RT Journal Article T1 Campylobacter fetus Plasmid Diversity: Comparative Analysis of Fully Sequenced Plasmids and Proposed Classification Scheme A1 Pena Fernández, Nerea A1 Van der Graaf-van Bloois, Linda A1 Duim, Birgitta A1 Zomer, Aldert A1 Wagenaar, Jaap A. A1 Ocejo, Medelin A1 Lavín, José Luis A1 Collantes Fernández, Esther A1 Hurtado, Ana A1 Aduriz, Gorka AB Campylobacter fetus is an animal pathogen that contains 2 mammal-associated subspecies: Campylobacter fetus subsp. fetus (Cff) and Campylobacter fetus subsp. venerealis (Cfv) including its biovar intermedius that exhibit different biochemical traits and differences in pathogenicity. Although plasmids are important in the horizontal transfer of antimicrobial resistance genes and virulence factors, C. fetus plasmids are understudied. Here, the closed sequences of 12 plasmids from Spanish C. fetus isolates were compared with the publicly available DNA sequences of C. fetus plasmids and other members of the Campylobacterales order. Sizes of C. fetus plasmids from Spanish isolates ranged between 4 and 50 kb and most of them (10/12) were potentially conjugative. Comparative analysis of the plasmids’ gene content revealed a close genetic relationship between the plasmids of C. fetus isolated in Spain and those from other geographical regions, while being clearly distinct from plasmids of other Campylobacter species. Furthermore, C. fetus plasmids were grouped into two main clusters regardless of their geographic location or lineage. The distribution pattern of relaxase, replicase, and single-stranded DNA binding SSB protein encoding genes showed a clustering comparable to that resulting from plasmid whole gene content analysis, suggesting its potential use for the classification of C. fetus plasmids. Most of the larger plasmids harbored mobile genetic elements. These results can help to better understand the evolutionary dynamics and pathogenic implications of C. fetus plasmids. PB Oxford University Press YR 2024 FD 2024 LK https://hdl.handle.net/20.500.14352/109344 UL https://hdl.handle.net/20.500.14352/109344 LA eng NO Nerea Pena-Fernández, Linda van der Graaf-van Bloois, Birgitta Duim, Aldert Zomer, Jaap A Wagenaar, Medelin Ocejo, Jose Luís Lavín, Esther Collantes-Fernández, Ana Hurtado, Gorka Aduriz, Campylobacter fetus Plasmid Diversity: Comparative Analysis of Fully Sequenced Plasmids and Proposed Classification Scheme, Genome Biology and Evolution, Volume 16, Issue 10, October 2024, evae203, https://doi.org/10.1093/gbe/evae203 NO Pre2018-086113 para Nerea Pena-Fernández NO European Commission NO Eusko Jaurlaritza DS Docta Complutense RD 6 abr 2025