Towards Elucidating the Rotary Mechanism of the Archaellum Machinery [PDF]
Frontiers in Microbiology, 2022 Motile archaea swim by means of a molecular machine called the archaellum. This structure consists of a filament attached to a membrane-embedded motor.
Sonja-Verena Albers +2 more
exaly +7 more sources
How Did the Archaellum Get Its Rotation? [PDF]
Frontiers in Microbiology, 2022 How new functions evolve fascinates many evolutionary biologists. Particularly captivating is the evolution of rotation in molecular machines, as it evokes familiar machines that we have made ourselves. The archaellum, an archaeal analog of the bacterial
Morgan Beeby, Beeby Morgan
exaly +7 more sources
An archaellum filament composed of two alternating subunits [PDF]
Nature Communications, 2022 The archaellum is a molecular machine used by archaea to swim, consisting of an intracellular motor that drives the rotation of an extracellular filament composed of multiple copies of proteins named archaellins.
Lavinia Gambelli +2 more
exaly +7 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 ...
M G Pyatibratov +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
Zhengqun Li +2 more
exaly +8 more sources
The archaellum: how archaea swim [PDF]
Frontiers in Microbiology, 2015 Recent studies on archaeal motility have shown that the archaeal motility structure is unique in several aspects as, although it fulfills the same swimming function as the bacterial flagellum, it is evolutionary and structurally related to the type IV ...
Sonja-Verena Albers +2 more
exaly +7 more sources
How Does the Archaellum Work? [PDF]
BiomoleculesThe archaellum is the simplest known molecular propeller. An analogue of bacterial flagella, archaella are long helical tails found in Archaea that are rotated by cell-envelope-embedded rotary motors to exert thrust for cell motility.
Morgan Beeby, Bertram Daum
doaj +4 more sources
Perturbed N-glycosylation of Halobacterium salinarum archaellum filaments leads to filament bundling and compromised cell motility [PDF]
Nature CommunicationsThe swimming device of archaea—the archaellum—presents asparagine (N)-linked glycans. While N-glycosylation serves numerous roles in archaea, including enabling their survival in extreme environments, how this post-translational modification contributes ...
Zlata Vershinin +2 more
exaly +3 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 (
Marianna Zaretsky +2 more
exaly +5 more sources