Results 11 to 20 of about 14,468 (156)
Eukaryogenesis From FECA to LECA: Radical Steps Along the Way. [PDF]
BioessaysHow did the last eukaryotic common ancestor (LECA) population evolve? Recent evidence shows an Asgard archaeon‐like organism acquiring a bacterium, the future mitochondrion, going from symbiosis to endosymbiosis. I postulate that almost all salient LECA characteristics could have resulted from the ensuing enhanced ATP generation and internal reactive ...
Speijer D.
europepmc +2 more sources
Eukaryogenesis: Did an Oxidative Crucible Result in Misleading Bioinformatic Analyses? [PDF]
BioessaysRecently, Nature published a timed gene duplication analysis favoring gradual models for eukaryogenesis. However, high initial mutation rates due to endogenous ROS formation by the OXPHOS system of the future mitochondrion and ensuing positive selection for countermeasures might strongly inflate branch lengths in such analyses. Ruling out symbiogenesis
Speijer D.
europepmc +2 more sources
Evolutionary cell biology: Functional insight from “Endless forms most beautiful” [PDF]
, 2015 In animal and fungal model organisms, the complexities of cell biology have been analyzed in exquisite detail and much is known about how these organisms function at the cellular level.
Dacks, Joel B. +4 more
core +1 more source
Primary endosymbiosis: have cyanobacteria and Chlamydiae ever been roommates?
Acta Societatis Botanicorum Poloniae, 2014 Eukaryotes acquired the ability to process photosynthesis by engulfing a cyanobacterium and transforming it into a genuine organelle called the plastid. This event, named primary endosymbiosis, occurred once more than a billion years ago, and allowed the
Philippe Deschamps
doaj +1 more source
Diversity, 2020 The ‘green’ ciliate Paramecium bursaria lives in mutualistic symbiosis with green algae belonging to the species Chlorella variabilis or Micractinium conductrix. We analysed the diversity of algal endosymbionts and their P. bursaria hosts in nine strains
Felicitas E. Flemming +3 more
doaj +1 more source
Relevance of sex-differenced analyses in bioenergetics and nutritional studies
Frontiers in Nutrition, 2022 Sex-biased analyses still remain as one of the biggest limitations to obtain universal conclusions. In biomedicine, the majority of experimental analyses and a significant amount of patient-derived cohort studies exclusively included males.
Glòria Garrabou +7 more
doaj +1 more source
A Study on the Origin of Peroxisomes: Possibility of Actinobacteria Symbiosis [PDF]
, 2008 The origin of peroxisomes as having developed from the endoplasmic reticulum (ER) was proposed on the basis of the similarity between some peroxisomal proteins and ER proteins, and the localization of some peroxisomal proteins on the ER.
Duhita Narendra +5 more
core +2 more sources
The Basic Genetic Toolkit to Move in with your Photosynthetic Partner
Frontiers in Ecology and Evolution, 2015 The origin of photosynthetic organelles via endosymbiosis more than 1 Gya ago was a major detonator of eukaryotic diversification. The evolution of a stable endosymbiotic relationship between eukaryotic cells and photosynthetic cyanobacteria involved ...
Adrian eReyes-Prieto
doaj +1 more source
Surfing the vegetal pole in a small population: extracellular vertical transmission of an 'intracellular' deep-sea clam symbiont [PDF]
Royal Society Open Science, 2016 Symbiont transmission is a key event for understanding the processes underlying symbiotic associations and their evolution. However, our understanding of the mechanisms of symbiont transmission remains still fragmentary.
Tetsuro Ikuta +13 more
doaj +1 more source
eLife, 2023 Life requires ribonucleotide reduction for de novo synthesis of deoxyribonucleotides. As ribonucleotide reduction has on occasion been lost in parasites and endosymbionts, which are instead dependent on their host for deoxyribonucleotide synthesis, it ...
Samantha DM Arras +11 more
doaj +1 more source