ArticleExtremophiles : life under extreme conditions2016
Knockout and functional analysis of two DExD/H-box family helicase genes in Sulfolobus islandicus REY15A.
Article in Extremophiles : life under extreme conditions, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 10 citations in OpenAlex.
- The Impact of Single-Stranded DNA-Binding Protein SSB and Putative SSB-Interacting Proteins on Genome Integrity in the Thermophilic CrenarchaeonInternational journal of molecular sciences · 2023Article
- Membrane lipid and expression responses ofFrontiers in microbiology · 2023Article
- Phylogenetic Diversity of Lhr Proteins and Biochemical Activities of the Thermococcales aLhr2 DNA/RNA Helicase.Biomolecules · 2021Article
- Post-Translational Modifications Aid Archaeal Survival.Biomolecules · 2020Review
- The essential genome of the crenarchaeal model Sulfolobus islandicus.Nature communications · 2018Article
- Autophosphorylation and Cross-Phosphorylation of Protein Kinases from the CrenarchaeonFrontiers in microbiology · 2017Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
DExD/H-box helicases represent the largest family of helicases. They belong to superfamily 2 helicases and participate in nucleotide metabolism, ribosome biogenesis, and nucleocytoplasmic transport. The biochemical properties and structures of some DExD/H-box helicases in the archaea have been documented, but many of them have not been characterized; and reports on in vivo functional analyses are limited. In this study, we attempted gene knockout of 8 putative DExD/H-box helicases in Sulfolobus islandicus REY15A and obtained two deletion mutants, SiRe_0681 and SiRe_1605. We determined that ΔSiRe_0681 grew faster than wild type cells in the presence of methyl methanesulfonate (MMS). Flow cytometry analysis showed that this strain had fewer G1/S phase cells than the wild type, and the genes coding for cell division proteins were up-regulated. The stain ΔSiRe_1605 was more sensitive to MMS than the wild type cell, and many nucleotide metabolism and DNA repair enzymes were found to be down-regulated. Intriguingly, deletion of either gene led to silencing simultaneously of over 80 genes located at a specific region. This study provides a novel insight into the in vivo functions of predicted DExD/H-box family helicases in the archaea.
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