The switch complex ArlCDE connects the chemotaxis system and the archaellum [PDF]
Molecular Microbiology, 2020 AbstractCells require a sensory system and a motility structure to achieve directed movement. Bacteria and archaea possess rotating filamentous motility structures that work in concert with the sensory chemotaxis system. This allows microorganisms to move along chemical gradients. The central response regulator protein CheY can bind to the motor of the
Zhengqun Li +2 more
exaly +7 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 +5 more sources
N-Glycosylation Is Important for Halobacterium salinarum Archaellin Expression, Archaellum Assembly and Cell Motility [PDF]
Frontiers in Microbiology, 2019 Halobacterium salinarum are halophilic archaea that display directional swimming in response to various environmental signals, including light, chemicals and oxygen. In Hbt. salinarum, the building blocks (archaellins) of the archaeal swimming apparatus (
Cynthia L Darnell +2 more
exaly +5 more sources
Low Salt Influences Archaellum-Based Motility, Glycerol Metabolism, and Gas Vesicles Biogenesis in Halobacterium salinarum [PDF]
Microorganisms, 2022 Halobacterium salinarum NRC-1 is an extremophile that grows optimally at 4.3 M NaCl concentration. In spite of being an established model microorganism for the archaea domain, direct comparisons between its proteome and transcriptome during osmotic ...
Evelyn Ayumi Onga +2 more
doaj +4 more sources
Evolution of Archaellum Rotation Involved Invention of a Stator Complex by Duplicating and Modifying a Core Component [PDF]
Frontiers in Microbiology, 2021 Novelty in biology can arise from opportunistic repurposing of nascent characteristics of existing features. Understanding how this process happens at the molecular scale, however, suffers from a lack of case studies. The evolutionary emergence of rotary
Trishant R. Umrekar +7 more
doaj +7 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
Cellular and Genomic Properties of Haloferax gibbonsii LR2-5, the Host of Euryarchaeal Virus HFTV1 [PDF]
Frontiers in Microbiology, 2021 Hypersaline environments are the source of many viruses infecting different species of halophilic euryarchaea. Information on infection mechanisms of archaeal viruses is scarce, due to the lack of genetically accessible virus–host models. Recently, a new
Colin Tittes +7 more
doaj +3 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
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
Interaction of two strongly divergent archaellins stabilizes the structure of the Halorubrum archaellum [PDF]
MicrobiologyOpen, 2020 Halophilic archaea from the genus Halorubrum possess two extraordinarily diverged archaellin genes, flaB1 and flaB2. To clarify roles for each archaellin, we compared two natural Halorubrum lacusprofundi strains: One of them contains both archaellin ...
Mikhail G. Pyatibratov +10 more
doaj +5 more sources