Results 51 to 60 of about 456 (125)
Assembly and Function of the Archaeal Motility Structure, the Archaellum [PDF]
Biophysical Journal, 2013 Most archaea posses a motility structure, called the archaellum that is mainly used for swimming, but can also play a role in adherence to surfaces. Although the archaellum functionally resembles the bacterial flagellum, its structure and assembly is reminiscent of bacterial type IV pili.We use the crenarchaeal archaellum of Sulfolobus acidocaldarius ...
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Insights into subunit interactions in the
The FEBS Journal, 2013 Archaella are the archaeal motility structure that is the functional pendant of the bacterial flagellum but is assembled by a mechanism similar to that for type IV pili. Recently, it was shown by Banerjee et al. that FlaX, a crenarchaeal archaellum subunit from Sulfolobus acidocaldarius, forms a ring‐like oligomer, and it was proposed that this ring ...
Banerjee, Ankan +3 more
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Positioning of the Motility Machinery in Halophilic Archaea
mBio, 2019 Bacteria and archaea exhibit tactical behavior and can move up and down chemical gradients. This tactical behavior relies on a motility structure, which is guided by a chemosensory system.
Zhengqun Li +7 more
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Frontiers in Microbiology, 2020 In Sulfolobus acidocaldarius, the protein phosphatase PP2A plays important regulatory roles in many cellular processes, including cell growth, cell shape and synthesis of the archaellum.
Xing Ye +2 more
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Screening of a Haloferax volcanii Transposon Library Reveals Novel Motility and Adhesion Mutants
Life, 2016 Archaea, like bacteria, use type IV pili to facilitate surface adhesion. Moreover, archaeal flagella—structures required for motility—share a common ancestry with type IV pili.
Georgio Legerme +5 more
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Regulation of DNA Topology in Archaea: State of the Art and Perspectives
Molecular Microbiology, Volume 123, Issue 3, Page 245-264, March 2025.DNA topoisomerases are ubiquitous enzymes that play a crucial role in regulating DNA supercoiling which affects fundamental biological processes involving DNA. In this review, we summarize the current understanding of regulation of supercoiling by DNA topoisomerases in the third domain of life, the Archaea, with a particular focus on three key model ...
Paul Villain, Tamara Basta
wiley +1 more source
Molecular Microbiology, Volume 123, Issue 2, Page 132-142, February 2025.Crenarchaeal Sulfolobales organize their genome with small, abundant nucleoid‐associated proteins. Here, we shed light on the distinct function of the Lrs14 family of aspecific DNA‐binding proteins, position these members toward the “chromatin organizing” side of the spectrum of DNA binders and propose a regulatory role for Lrs14s in global gene ...
Veerke De Kock +2 more
wiley +1 more source
Environmental Microbiology, Volume 26, Issue 12, December 2024.We isolated a novel methanogenic archaeon, Methanosarcina hadiensis sp. nov. (TD41E1‐1), from Boom Clay pore water at a depth of 225 m. It exhibits unique characteristics compared to previously characterized Methanosarcina species, such as the inability to perform acetoclastic methanogenesis and the presence of extensive surface appendages.
Francisco Javier Giménez +4 more
wiley +1 more source
Molecular Microbiology, 2016 SummaryOrganisms have evolved motility organelles that allow them to move to favourable habitats. Cells integrate environmental stimuli into intracellular signals to motility machineries to direct this migration. Many motility organelles are complex surface appendages that have evolved a tight, hierarchical regulation of expression.
Haurat, M. Florencia +8 more
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Environmental Microbiology Reports, Volume 16, Issue 3, June 2024.We studied predefined co‐cultures to investigate the influence of acetate scavenger Methanothrix soehngenii on butyrate oxidation by a co‐culture of Syntrophomonas wolfei and Methanospirillum hungatei. RNAseq was used to compare the gene expression profiles of syntroph S. wolfei with and without the presence of the acetate scavenger M.
Maaike S. Besteman +2 more
wiley +1 more source