Purple Earth Hypothesis
Haloarchaea
Euryarchaeota
Archaea

Halobacteria are now recognized as archaea rather than bacteria and are one of the largest groups. The name 'halobacteria' was assigned to this group of organisms before the existence of the domain Archaea was realized, and while valid according to taxonomic rules, should be updated.

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Mycoplasma
Archaea
Apicoplast
Plastid

Symbiosis or Symbiogenesis?

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Pruning Neuron
GP120

Protein glycosylation in Archaea: Sweet and extreme

https://academic.oup.com/glycob/article/20/9/1065/1987758?login=false

Bananas
Lichen
H843

https://www.thailandmedical.news/news/breaking-lectins-from-bananas-could-serve-as-an-antiviral-against-the-sars-cov-2-coronavirus-including-emerging-omicron-sub-lineages

Why does COVID-19 cause brain fog? Scientists may finally have an answer.

https://www.nationalgeographic.co.uk/science-and-technology/2022/12/why-does-covid-19-cause-brain-fog-scientists-may-finally-have-an-answer

β4GalT1 Mediates PPARγ N-Glycosylation to Attenuate Microglia Inflammatory Activation

https://pubmed.ncbi.nlm.nih.gov/29717387/

The role of N-glycan modification of TNFR1 in inflammatory microglia activation

https://pubmed.ncbi.nlm.nih.gov/26452604/

Accumulating evidences demonstrated that microglia activation and the autocrine loop of tumor necrosis factor-α (TNFα) greatly contribute to the pathogenesis of several CNS diseases.

These findings indicated that the N-glycosylation of TNFR1 played an important role during microglia activation in CNS inflammation.

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S1 Domain
Cold-Shock Domain

https://en.m.wikipedia.org/wiki/S1_domain

https://en.m.wikipedia.org/wiki/Cold-shock_domain

The structure of the S1 domain is very similar to that of cold shock proteins. This suggests that they may both be derived from an ancient nucleic acid-binding protein.

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Gain of Function
Integron
Epithelial Cell α6β4
Cross-Domain
Horizontal Gene Transfer

Some Archaea found to have integrons, allowing cross-domain gene transfer

https://phys.org/news/2022-11-archaea-integrons-cross-domain-gene.html

https://en.m.wikipedia.org/wiki/Horizontal_gene_transfer

https://en.m.wikipedia.org/wiki/Integrin

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https://en.m.wikipedia.org/wiki/Simian_immunodeficiency_virus

https://en.m.wikipedia.org/wiki/Reverse_transcriptase

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Squid Axoplasm Supports the Retrograde Axonal Transport of Herpes Simplex Virus.

https://www.thefreelibrary.com/Squid+Axoplasm+Supports+the+Retrograde+Axonal+Transport+of+Herpes...-a057815562