Results 21 to 30 of about 77,666 (195)
tRNA-isoleucine-tryptophan Composite Gene [PDF]
Biochemical and biophysical Research Communications 339 (2005)
37-40, 2005 Transfer-RNA genes in archaea often have introns intervening between exon sequences. The structural motif at the boundary between exon and intron is the bulge-helix-bulge. Computational investigations of these boundary structures in H. marismortui lead us to propose that tRNA-isoleucine and tRNA-tryptophan genes are co-located.
arxiv +1 more source
Single-molecule FRET uncovers hidden conformations and dynamics of human Argonaute 2
Nature Communications, 2022 Single-molecule FRET measurements provide detailed insights into the conformational states and dynamics of human Argonaute 2 that are required for its function at the core of the eukaryotic RNA silencing pathway.
Sarah Willkomm +6 more
doaj +1 more source
A Well-Conserved Archaeal B-Family Polymerase Functions as an Extender in Translesion Synthesis
mBio, 2022 B-family DNA polymerases (PolBs) of different groups are widespread in Archaea, and different PolBs often coexist in the same organism. Many of these PolB enzymes remain to be investigated.
Xu Feng +9 more
doaj +1 more source
Habitat transition in the evolution of bacteria and archaea [PDF]
arXiv, 2023 Related groups of microbes are widely distributed across Earth's habitats, implying numerous dispersal and adaptation events over evolutionary time. However, to date, relatively little is known about the characteristics and mechanisms of these habitat transitions, particularly for populations that reside in animal microbiomes.
arxiv
Biomolecules, 2020 Prokaryotes are constantly coping with attacks by viruses in their natural environments and therefore have evolved an impressive array of defense systems.
Isabelle Anna Zink +2 more
doaj +1 more source
The Space Experiment of the Exo-ecosystem [PDF]
arXiv, 2023 The experiment of exo-ecosystem and the exploration of extraterrestrial habitability aims to explore the adaptation of terrestrial life in space conditions for the manned space program and the future interstellar migration, which shows great scientific significance and public interests. By our knowledge the early life on Earth, archaea and extremophile
arxiv
Enzymatic Switching Between Archaeal DNA Polymerases Facilitates Abasic Site Bypass
Frontiers in Microbiology, 2021 Abasic sites are among the most abundant DNA lesions encountered by cells. Their replication requires actions of specialized DNA polymerases. Herein, two archaeal specialized DNA polymerases were examined for their capability to perform translesion DNA ...
Xu Feng +10 more
doaj +1 more source
Nature Communications, 2019 The S-layer is a proteinaceous envelope often found in bacterial and archaeal cells. Here, the authors use CRISPR-based technology to silence slaB, encoding the S-layer membrane anchor, to show that an intact S-layer is important for cell division and ...
Isabelle Anna Zink +5 more
doaj +1 more source
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 +1 more source
Frontiers in Microbiology, 2021 Halophilic archaea have been proposed to exchange DNA and proteins using a fusion-based mating mechanism. Scanning electron microscopy previously suggested that mating involves an intermediate state, where cells are connected by an intercellular bridge ...
Shamphavi Sivabalasarma +7 more
doaj +1 more source