Asgard archaea from sediments. sediment metagenome

This study aims at expanding the known diversity of archaea closely related to Lokiarchaeum. We propose a new super-phylum of Asgards comprising fours diverse candidate phyla, namely Candidatus: Heimdallarchaeota, Odinarchaeota, Thorarchaeota and Lokiarchaeota, the last one discovered before. Their evolutionary significance comes from the close phylogenetic relationship with eukaryotes and genomic bins containing a diversity of eukaryotic signature proteins.

本研究旨在拓展与洛基古菌（Lokiarchaeum）亲缘关系密切的古菌已知物种多样性。我们提出建立阿斯加德超门（Asgards），该超门包含四个不同的候选门类群，分别为候选门级海姆达尔古菌门（Heimdallarchaeota）、奥丁古菌门（Odinarchaeota）、索尔古菌门（Thorarchaeota）以及此前已被发现的洛基古菌门（Lokiarchaeota）。该类群的进化意义在于其与真核生物存在紧密的系统发育亲缘关系，且其基因组分箱（genomic bins）中包含多种真核生物特征蛋白（eukaryotic signature proteins）。