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 ...
Alexey Syutkin +2 more
exaly +7 more sources
The switch complex ArlCDE connects the chemotaxis system and the archaellum [PDF]
Molecular Microbiology, 2020 The bacterial‐like chemotaxis system is essential for directional movement in Archaea. So far, it was unknown how the signal is transferred from the archaeal CheY protein to the archaellum motor to initiate motor switching. In this study, we demonstrate that the proteins ArlCDE represent the archaellum switch complex, which is the docking point for the
Tessa E F Quax, Sonja-Verena Albers
exaly +8 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 +6 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 (
Amy Schmid +2 more
exaly +5 more sources
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).
Najwa Taïb +2 more
exaly +5 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.
Zhirui Zeng +2 more
exaly +4 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
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
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