Structural insights into the mechanism of archaellar rotational switching. [PDF]
Nat Commun, 2022 Signal transduction via phosphorylated CheY towards the flagellum and the archaellum involves a conserved mechanism of CheY phosphorylation and subsequent conformational changes within CheY. This mechanism is conserved among bacteria and archaea, despite
Altegoer F +10 more
europepmc +3 more sources
MinD2 modulates cell shape and motility in the archaeon Haloferax volcanii [PDF]
Frontiers in MicrobiologyIn bacteria and archaea, proteins of the ParA/MinD family of ATPases regulate the spatiotemporal organization of various cellular cargoes, including cell division proteins, motility structures, chemotaxis systems, and chromosomes.
Megha Patro +11 more
doaj +2 more sources
Structure of a functional archaellum in Bacteria of the Chloroflexota phylum. [PDF]
Nat MicrobiolAbstract 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).
Sivabalasarma S +6 more
europepmc +3 more sources
Two different sulfotransferases modify sugars of the N-linked tetrasaccharide decorating Halobacterium salinarum glycoproteins [PDF]
mBioDespite providing the first example of archaeal N-glycosylation almost 50 years ago, detailed insight into the pathway used by Halobacterium salinarum to assemble and attach an N-linked tetrasaccharide decorating glycoproteins in this haloarchaea has ...
Marianna Zaretsky +4 more
doaj +2 more sources
High‐resolution archaellum structure reveals a conserved metal‐binding site [PDF]
EMBO reports, 2019 Many archaea swim by means of archaella. While the archaellum is similar in function to its bacterial counterpart, its structure, composition, and evolution are fundamentally different.
Alejandro Villar‐Briones +6 more
core +4 more sources
Membrane lipid and expression responses of Saccharolobus islandicus REY15A to acid and cold stress. [PDF]
Front Microbiol, 2023 Archaea adjust the number of cyclopentane rings in their glycerol dibiphytanyl glycerol tetraether (GDGT) membrane lipids as a homeostatic response to environmental stressors such as temperature, pH, and energy availability shifts.
Chiu BK +7 more
europepmc +3 more sources
Structure-based function assignment for archaellum regulatory network proteins of Sulfolobus acidocaldarius [PDF]
Der Ursprung des Lebens ist ein komplexes Thema, das weltweit wissenschaftliche Diskussionen befeuert. Im Allgemeinen ist es akzeptiert, dass die Endosymbiose eine zentrale Rolle bei der Eukaryogenese spielt.
Korf, Lukas
core +3 more sources
Cross-kymography analysis to simultaneously quantify the function and morphology of the archaellum
Biophysics and Physicobiology, 2018 In many microorganisms helical structures are important for motility, e.g., bacterial flagella and kink propagation in Spiroplasma eriocheiris. Motile archaea also form a helical-shaped filament called the 'archaellum' that is functionally equivalent to the bacterial flagellum, but structurally resembles type IV pili. The archaellum motor consists of 6-
Yoshiaki Kinosita
exaly +4 more sources
Origin of biogeographically distinct ecotypes during laboratory evolution. [PDF]
Nat CommunResource partitioning is central to the incredible productivity of microbial communities, including gigatons in annual methane emissions through syntrophic interactions.
Valenzuela JJ +11 more
europepmc +3 more sources
Biologie in unserer Zeit, 2017 In dieser heißen und schlammigen Quelle im Yellowstone National Park, USA, überlebt nur, wer Temperaturen um die 75 °C und einen pH‐Wert von 2–3 mag – so wie das Archaeon Sulfolobus acidocaldarius. Rechts im Bild zwei Lebewesen, die dort Proben genommen haben und sich eher bei 20 °C und einem pH‐Wert der Haut von ungefähr 5,5 wohlfühlen: Sonja‐Verena ...
Hoffmann, Lena, Albers, Sonja Verena
openaire +3 more sources