Arussi, Emma (2021) Asgard Archaea bring us closer to the truth about the tree of life. Bachelor's Thesis, Life Science and Technology.
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Abstract
Since the discovery of the first Asgard Archaea, researchers have been extensively describing their properties and genomic resemblances to eukaryotic cells. Asgard Archaea were found to mostly be obligate anaerobes, with varied ecologies and metabolic properties from one species to another. Most are thought to be able to degrade H2 and organic compounds for energy, as well as produce H2 as a possible byproduct. It was found that Asgard Archaea had genes that encoded for properties earlier only ascribed to Eukarya, called Eukaryotic Signature Proteins (ESPs). After the isolation of the first Asgard Archaea in Japan, a model called Entangle-Engulf-Endogenize (E3) was described by Imachi (2020). Here, considering the syntrophic relationship of the Asgard archaea with an O2-scavenging partner and a sulfate-reducing deltaproteobacterium, indications of a first archaeal host cell that evolved into an eukaryotic cell were made. The E3 model, as well as the ESPs found in Asgard members’ genome, both support the two-domain tree of life where Eukaryotes are part of the Archaea domain.
| Item Type: | Thesis (Bachelor's Thesis) |
|---|---|
| Supervisor name: | Driessen, A.J.M. |
| Degree programme: | Life Science and Technology |
| Thesis type: | Bachelor's Thesis |
| Language: | English |
| Date Deposited: | 01 Jun 2021 13:18 |
| Last Modified: | 01 Jun 2021 13:18 |
| URI: | https://fse.studenttheses.ub.rug.nl/id/eprint/24483 |
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