An Asgard archaeon from a modern analog of ancient microbial mats
Nobs, S.-J.; Johnson, M. D.; Williams, T. J.; Meltzer, J.; Vazquez-Campos, X.; MacLeod, F. I.; Rowell, K.; Pitt, M.; Paul, B.; Shepherd, D. C.; Michie, K. A.; Duggin, I. G.; Ghosal, D.; Burns, B. P.
Show abstract
It has been proposed that eukaryotic cells evolved via symbiosis between sulfate-reducing bacteria and hydrogen-producing archaea. Here we describe a highly enriched culture of a novel Asgard archaeon, Nerearchaeum marumarumayae, with a bacterium Stromatodesulfovibrio nilemahensis from a stromatolite-associated microbial mat. The N. marumarumayae genome indicates it produces H2, acetate, formate, and sulfite, while S. nilemahensis synthesizes amino acids and vitamins, which can be exchanged in a syntrophic partnership. Electron cryotomography revealed N. marumarumayae cells produce chains of budded envelope vesicles attached to the coccoid cell body by extracellular fibers, and intracellular tube- and cage-like structures. Furthermore, the two species were observed interacting via intercellular nanotubes assembled by the bacterium. These characteristics and interactions may reflect an early step in the symbiotic evolution of eukaryotic cells.
Matching journals
The top 3 journals account for 50% of the predicted probability mass.
Similar papers in this journal
- Bacterial flagellar motor PL-ring disassembly sub-complexes are widespread and ancient 97%
- Interdigitated immunoglobulin arrays form the hyperstable surface layer of the extremophilic bacterium Deinococcus radiodurans 96%
- Archaeal bundling pili of Pyrobaculum calidifontis reveal similarities between archaeal and bacterial biofilms 96%
Similar papers in this journal
- Differential global distribution of marine picocyanobacteria gene clusters reveals distinct niche-related adaptive strategies 96%
- Halophilic microbial community compositional shift after a rare rainfall in the Atacama Desert 95%
- Toward quantifying the adaptive role of bacterial pangenomes during environmental perturbations 94%
Similar papers in this journal
- Heterotrophic Thaumarchaeota with ultrasmall genomes are widespread in the ocean 97%
- Ecophysiology of the cosmopolitan OM252 bacterioplankton (Gammaproteobacteria) 96%
- Genome-resolved metaproteomics decodes the microbial and viral contributions to coupled carbon and nitrogen cycling in river sediments 96%
"Similar papers" are the closest papers from that journal in the model's embedding space. They show what the match is built on, but the ranking comes mostly from a classifier over the whole training set, not from these examples alone.