Asgard (archaea): Difference between revisions

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→‎Taxonomy: Eukaryotic nucleus, to make the point more salient
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=== Eukaryotic-like features in subdivisions ===
The phylum "Heimdallarchaeota" was found in 2017 to have N-terminal core histone[[Histone codhistone tails]], a feature previously thought to be exclusively eukaryotic. Two other archaeal phyla, both outside of Asgard, were found to also have tails in 2018.<ref name=pmid30212449>{{cite journal | vauthors = Henneman B, van Emmerik C, van Ingen H, Dame RT | title = Structure and function of archaeal histones | journal = PLOS Genetics | volume = 14 | issue = 9 | pages = e1007582 | date = September 2018 | pmid = 30212449 | pmc = 6136690 | doi = 10.1371/journal.pgen.1007582 | bibcode = 2018BpJ...114..446H }}</ref>
 
In January 2020, scientists found ''Candidatus'' ''Prometheoarchaeum syntrophicum'', a member of the Lokiarcheota, engaging in [[cross-feeding]] with two bacterial species. Drawing an analogy to [[symbiogenesis]], they consider this relationship a possible link between the simple [[prokaryotic]] microorganisms and the complex [[eukaryotic]] microorganisms occurring approximately two billion years ago.<ref name="NYT-2020115">{{cite news | vauthors = Zimmer C |title=This Strange Microbe May Mark One of Life's Great Leaps - A organism living in ocean muck offers clues to the origins of the complex cells of all animals and plants. |url=https://www.nytimes.com/2020/01/15/science/cells-eukaryotes-archaea.html |date=15 January 2020 |work=[[The New York Times]] |access-date=16 January 2020 }}</ref><ref name=":0" />