Eukaryotes’ closest relatives are internally simple syntrophic peptidotrophic archaea

Nature, Published online: 28 October 2026; doi:10.1038/s41586-026-11170-7Cultures reveal conservation of cell structure, physical symbioses and anaerobiosis across Heimdallarchaeia (the archaeal lineage that branches closest to eukaryo…

Nature, Published online: 28 October 2026; doi:10.1038/s41586-026-11170-7

Cultures reveal conservation of cell structure, physical symbioses and anaerobiosis across Heimdallarchaeia (the archaeal lineage that branches closest to eukaryotes) and other Promethearchaeota.