Showing posts with label Cell Biology. Show all posts
Showing posts with label Cell Biology. Show all posts

Saturday, 22 March 2025

Refuting Creationism - LECA Was An Asgard Archaea

An artist’s depiction of an Asgard archaeon, based on cryo-electron tomography data: the cell body and appendages feature thread-like skeletal structures, similar to those found in complex cells with nuclei.
Graphic: Margot Riggi,
Max Planck Institute of Biochemistry

Asgard tubulin.
Origin of Life: How microbes laid the foundation for complex cells | ETH Zurich

Recent research indicates that the last universal common ancestor of complex (eukaryotic) cells, which encompass all multicellular plant and animal life, likely originated from the Asgard group of archaea. This ancestor is believed to have formed a symbiotic relationship with an alphaproteobacterium, which eventually evolved into the mitochondrion.

The initial nature of this symbiotic relationship—whether parasitic or predatory—remains uncertain. However, its establishment was pivotal in setting the evolutionary course that led to the diversity of life on Earth. Compelling evidence supporting the Asgard archaea hypothesis has been uncovered by Professor Martin Pilhofer and his team at the Eidgenössische Technische Hochschule (ETH) Zurich, Switzerland. Their findings have been published in the journal Cell and is explained in an ETH news item by Peter Rüegg:
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