Results 51 to 60 of about 2,427 (150)

A Novel Polyphosphate‐Degrading Enzyme Confers Growth on Exogenous Polyphosphate in the Archaeon Haloferax volcanii

Environmental Microbiology, Volume 28, Issue 7, July 2026.
A novel polyP‐degrading enzyme with an activity differing from those currently known was found in Haloferax volcanii, conferring the ability for this microbe to grow on extracellular polyP. These findings further our understanding of the potential ecological roles of polyP and how archaea metabolise this essential biopolymer.
Jack W. F. Nicholls, Vincent O'Flaherty, Timothy M. Lenton, John W. McGrath, Jason P. Chin   +4 more
wiley   +1 more source

Archaeal membrane-associated proteases: insights on Haloferax volcanii and other haloarchaea

Frontiers in Microbiology, 2015
The function of membrane proteases range from general house-keeping to regulation of cellular processes. Although the biological role of these enzymes in archaea is poorly understood, some of them are implicated in the biogenesis of the archaeal cell ...
Maria Ines Giménez, Micaela eCerletti, Rosana Esther De Castro   +2 more
doaj   +1 more source

H2‐dependent modulation of tetrahydromethanopterin S‐methyltransferase (Mtr complex) activity by the small protein MtrR in Methanosarcina mazei

The FEBS Journal, Volume 293, Issue 14, Page 4397-4410, July 2026.
Small protein MtrR is a regulator of the Mtr methyltransferase complex in Methanosarcina mazei. It binds specifically to the MtrA subunit and modulates Mtr activity in response to hydrogen (H2) availability. Deleting mtrR impairs growth in the presence but not absence of H2, indicating its role in directing methyl transfer toward an energy‐conserving ...
Tim Habenicht, Bjarne Hastedt, Liam Cassidy, Claudia Kießling, Andreas Tholey, Jan M. Schuller, Ruth A. Schmitz   +6 more
wiley   +1 more source

Lipid Anchoring of Archaeosortase Substrates and Midcell Growth in Haloarchaea

mBio, 2020
The archaeal cytoplasmic membrane provides an anchor for many surface proteins. Recently, a novel membrane anchoring mechanism involving a peptidase, archaeosortase A (ArtA), and C-terminal lipid attachment of surface proteins was identified in the model
Mohd Farid Abdul-Halim, Stefan Schulze, Anthony DiLucido, Friedhelm Pfeiffer, Alexandre Wilson Bisson Filho, Mechthild Pohlschroder   +5 more
doaj   +1 more source

A New Era for Using Natural Pigments: The Case of the C50 Carotenoid Called Bacterioruberin

Biotechnology and Applied Biochemistry, Volume 73, Issue 2, Page 913-926, April 2026.
ABSTRACT Haloarchaea are extremophilic microorganisms belonging to the Archaea domain that require high salt concentrations to live, thus inhabiting ecosystems like salty ponds, salty marshes, or extremely salty lagoons. They are more abundant and widely distributed worldwide than initially expected.
Micaela Giani, Elena Valdés, José María Miralles‐Robledillo, Guillermo Martínez, Carmen Pire, Rosa María Martínez‐Espinosa   +5 more
wiley   +1 more source

Establishing Live-Cell Single-Molecule Localization Microscopy Imaging and Single-Particle Tracking in the Archaeon Haloferax volcanii

Frontiers in Microbiology, 2020
In recent years, fluorescence microscopy techniques for the localization and tracking of single molecules in living cells have become well-established and are indispensable tools for the investigation of cellular biology and in vivo biochemistry of many ...
Bartosz Turkowyd, Sandra Schreiber, Julia Wörtz, Ella Shtifman Segal, Moshe Mevarech, Iain G. Duggin, Anita Marchfelder, Ulrike Endesfelder, Ulrike Endesfelder   +8 more
doaj   +1 more source

Impact of Fire and Heat Stress on Soil Microorganisms: A Review of Community Changes, Molecular Responses and Plant‐Beneficial Roles

Environmental Microbiology Reports, Volume 18, Issue 2, April 2026.
This work reviewed the direct and indirect effects of fires on microbial communities and the resilience strategies microbes use to withstand high temperatures . ABSTRACT Fire, whether occurring on the surface or underground, significantly influences soil microbial dynamics by reshaping community composition, functional diversity and overall soil and ...
Ma. del Carmen Orozco‐Mosqueda, Aurora Flores‐Piña, Ajay Kumar, Fannie I. Parra‐Cota, Sergio de los Santos‐Villalobos, Debasis Mitra, Olubukola Oluranti Babalola, Gustavo Santoyo   +7 more
wiley   +1 more source

Characterization and Functional Evaluation of Carotenoids From Haloarcula rubripromontorii BS2

MicrobiologyOpen, Volume 15, Issue 1, February 2026.
Fractionation and comprehensive characterization of C50 carotenoids from Haloarcula rubripromontorii BS2, identified all‐trans bacterioruberin as the predominant isomer. The haloarchaeal carotenoid exhibited strong antioxidant activity, photostability in oil and was biocompatible with human keratinocytes, highlighting their potential as sustainable ...
Devika N. Nagar, Deepthi Das, Raviprasad Aduri, Judith Maria Braganca   +3 more
wiley   +1 more source

Ultrasound Imaging Properties of Heterologously Synthesized Gas Vesicles from Halophilic Archaeon

Nanomaterials
Biosynthetic gas vesicles (GVs), as novel nanoscale ultrasound contrast agents, exhibit unique potential in biomedical ultrasound imaging. For example, they are expected to have better tissue penetration through the tumor vasculature for detecting tumor ...
Wenze Ou, Chenxing Liu, Yuanyuan Wang, Qiuxia Fu, Wei Liu, Huan Long, Fei Yan   +6 more
doaj   +1 more source

Biosynthesis and Role of N-Linked Glycosylation in Cell Surface Structures of Archaea with a Focus on Flagella and S Layers

International Journal of Microbiology, 2010
The genetics and biochemistry of the N-linked glycosylation system of Archaea have been investigated over the past 5 years using flagellins and S layers as reporter proteins in the model organisms, Methanococcus voltae, Methanococcus maripaludis, and ...
Ken F. Jarrell, Gareth M. Jones, Divya B. Nair   +2 more
doaj   +1 more source