Structure of a functional archaellum in Bacteria of the Chloroflexota phylum [PDF]
Nature MicrobiologyAbstract Motility in Archaea is driven by the archaellum, a rotary ATP-driven machinery unrelated to the bacterial flagellum. To date, archaella have been described exclusively in archaea; however, recent work reported archaellum genes in bacterial strains of the SAR202 clade (Chloroflexota).
Shamphavi Sivabalasarma +2 more
exaly +5 more sources
The transcriptional regulator EarA and intergenic terminator sequences modulate archaellation in Pyrococcus furiosus [PDF]
Frontiers in Microbiology, 2023 The regulation of archaellation, the formation of archaeal-specific cell appendages called archaella, is crucial for the motility, adhesion, and survival of archaeal organisms.
Richard Stöckl +5 more
doaj +2 more sources
Cyclization of archaeal membrane lipids impacts membrane protein activity and archaellum formation [PDF]
Proceedings of the National Academy of Sciences of the United States of AmericaEnhancement of the cyclization of membrane lipids GDGTs (glycerol dialkyl glycerol tetraethers) is a critical strategy for archaea to adapt to various environmental stresses. However, the physiological function of membrane lipid cyclization remains unclear.
Geraldy Lie Stefanus Liman +2 more
exaly +4 more sources
Phosphorylation-driven conformational switching of the ArnA–ArnB complex involved in archaeal motility regulation [PDF]
Frontiers in MicrobiologyArnA and ArnB serve as regulators within the Sulfolobus archaellum regulatory network by modulating the archaellum components ArlB and ArlX, which are essential for swimming motility.
Mohamed Watad +14 more
doaj +2 more sources
The Archaellum of
mBio, 2019 Microbially produced electrically conductive protein filaments are of interest because they can function as conduits for long-range biological electron transfer. They also show promise as sustainably produced electronic materials.
David J. F. Walker +5 more
doaj +3 more sources
Stay or Go: Sulfolobales Biofilm Dispersal Is Dependent on a Bifunctional VapB Antitoxin [PDF]
mBio, 2023 A type II VapB14 antitoxin regulates biofilm dispersal in the archaeal thermoacidophile Sulfolobus acidocaldarius through traditional toxin neutralization but also through noncanonical transcriptional regulation.
April M. Lewis +5 more
doaj +2 more sources
Structure and in situ organisation of the Pyrococcus furiosus archaellum machinery
eLife, 2017 The archaellum is the macromolecular machinery that Archaea use for propulsion or surface adhesion, enabling them to proliferate and invade new territories.
Bertram Daum +7 more
doaj +6 more sources
Autophosphorylation of the KaiC‐like protein ArlH inhibits oligomerization and interaction with ArlI, the motor ATPase of the archaellum [PDF]
Molecular Microbiology, Volume 116, Issue 3, Page 943-956, September 2021., 2021 KaiC is the central component in the regulation of the cyanobacterial circadian rhythm. KaiC‐like proteins are widespread in archaea, where they are thought to have originated and thought to perform diverse functions. We show that the KaiC‐like protein ArlH—an essential protein for archaeal motility—possesses autophosphorylation activity which mediates
J. Nuno de Sousa Machado +7 more
wiley +5 more sources
Transcriptome profiling of Nudix hydrolase gene deletions in the thermoacidophilic archaeon Sulfolobus acidocaldarius [PDF]
Frontiers in Microbiology, 2023 Nudix hydrolases comprise a large and ubiquitous protein superfamily that catalyzes the hydrolysis of a nucleoside diphosphate linked to another moiety X (Nudix).
Ruth Breuer +5 more
doaj +2 more sources
The Role of Polyphosphate in Motility, Adhesion, and Biofilm Formation in Sulfolobales [PDF]
Microorganisms, 2021 Polyphosphates (polyP) are polymers of orthophosphate residues linked by high-energy phosphoanhydride bonds that are important in all domains of life and function in many different processes, including biofilm development. To study the effect of polyP in
Alejandra Recalde +5 more
doaj +2 more sources