Asgard is a newly proposed archaeal superphylum, which has been suggested to hold the key to decipher the origin of Eukaryotes. However, their ecology remains largely unknown. Here, we conducted a meta-analysis of publicly available Asgard-associated 16S rRNA gene fragments, and found that just ...
Asgard is a recently discovered superphylum of archaea that appears to include the closest archaeal relatives of eukaryotes1–5. Debate continues as to whether the archaeal ancestor of eukaryotes belongs within the Asgard superphylum or whether this ance
which form a sister group to eukaryotic actin. The three other homologues (from top to bottom: GenBankUYP47647.1,UYP44711.1andUYP44126.1) cluster with other Asgard archaeal and eukaryotic ARPs (groups indicated by the black arrowheads). The tree was rooted with the MreB protein family. CR 4,...
Here, we describe an Asgard archaeal pAgo that branches deeply in the PIWI-clade, and that mediates RNA-guided RNA silencing. This Asgard archaeal pAgo exhibits hybrid structural and mechanistic properties typically found in either AGO or PIWI, which may reflect an ancestral molecular architecture th...
Current data support scenarios in which an archaeal host cell and an alphaproteobacterial (mitochondrial) endosymbiont merged together, resulting in the first eukaryotic cell. The host cell is related to Lokiarchaeota, an archaeal phylum with many eukaryotic features. The emergence of the structural ...
Asgard is a recently discovered superphylum of archaea that appears to include the closest archaeal relatives of eukaryotes1–5. Debate continues as to whether the archaeal ancestor of eukaryotes belongs within the Asgard superphylum or whether this ancestor is a sister group to all other archaea ...
The discovery of DNA sequences from a group of microbes called Asgard archaea revealed them to be the best candidates for the archaeal lineage related to the one involved in eukaryogenesis1. However, Asgard archaea have proved very difficult to grow in the laboratory. Writing in Nature, ...
Current data support scenarios in which an archaeal host cell and an alphaproteobacterial (mitochondrial) endosymbiont merged together, resulting in the first eukaryotic cell. The host cell is related to Lokiarchaeota, an archaeal phylum with many eukaryotic features. The emergence of the structural ...
Extensive sampling combined with 'omics'- and cultivation-based approaches seem, therefore, crucial to gain deeper knowledge on this particularly intriguing archaeal lineage.doi:10.1007/s00792-022-01266-zHoria L.BanciuDepartment of Molecular Biology and Biotechnology, Faculty of Biology and Geology, 5...
Data from: Asgard archaea illuminate the origin of eukaryotic cellular complexity Asgard archaea affiliate with eukaryotes in phylogenomic analyses, and their genomes are enriched for proteins formerly considered specific to eukaryotes. Notably, thorarchaeal genomes encode several homologues of eukaryotic ...