PreprintCited by 3DNA Repair MechanismsBacterial Genetics and BiotechnologyCRISPR and Genetic Engineering

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New components of the community based DNA-repair mechanism in Sulfolobales

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Preprint — published as 10.1093/femsml/uqaf002 · Paper page

Abstract

After exposure to UV light, Sulfolobus acidocaldarius cells aggregate in a species-specific manner to exchange DNA and repair double-strand breaks via homologous recombination. The formation of cell-cell interactions is mediated by Ups pili. DNA exchange subsequently occurs through the Ced system, which imports DNA. To identify novel players in these processes, we investigated several genes upregulated after UV exposure by creating in-frame deletion mutants and performing cell aggregation and DNA exchange assays. This led to the identification of two novel components involved in the Ups and Ced systems: UpsC, a minor pilin of the Ups pili, and CedD, a VirD4-like ATPase essential for DNA import. Altogether, these findings provide new insights into the fascinating DNA damage response of Sulfolobales.

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Metadata

Authors
Recalde, A., Wagner, A., Sivabalasarma, S., Yurmashava, A., Fehr, N. P., Thurm, R., Le, T. N., Köbler, C., Wassmer, B., Albers, S.-V., & van Wolferen, M.
Affiliations
University of Freiburg (DE)
Corresponding author
  • Albers, Sonja-Verena
  • van Wolferen, Marleen
Venue
microLife
Publisher
openRxiv
Published
2024-09-30
Volume
6
Pages
uqaf002-uqaf002
ISSN
2633-6693 (ISSN-L)
OpenAlex
W4406605637
Cited by
3
References
1
Citations by year
2026: 2 · 2025: 1
FWCI
0.90
Type
journal article
Language
en
Open access
Locations
  • microLife (publishedVersion, cc-by-nc)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • FreiDok plus (Universitätsbibliothek Freiburg) (submittedVersion)
Funders
  • California Department of Fish and Game (AL1206, 426849454)
  • Deutsche Forschungsgemeinschaft (SFB1381, 426849454, AL1206)
  • Albert-Ludwigs-Universität Freiburg
  • Bộ Giáo dục và Ðào tạo
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › DNA Repair Mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
Keywords
Sulfolobales, DNA repair, homologous recombination, DNA double-strand break repair, cell aggregation, UV-induced DNA damage, DNA damage response, archaea

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