Search results for Eukaryote

Evolution Jun 7, 2023

Remains of an extinct world of organisms discovered

Newly discovered biomarker signatures point to a whole range of previously unknown organisms that dominated complex life on Earth about a billion years ago. They differed from complex eukaryotic life as we know it, such as ...

Cell & Microbiology Jun 1, 2023

'How do we know what we don't know?': Scientists completely define the process of methylation

UNSW Sydney researchers, for the first time, have completely defined the essential cellular process known as methylation. In a paper published in the Proceedings of the National Academy of Sciences, the landmark study emphasizes ...

Plants & Animals May 11, 2023

Ancestral mitoviruses discovered in mycorrhizal fungi

A new group of mitochondrial viruses confined to the arbuscular mycorrhizal fungi Glomeromycotina may represent an ancestral lineage of mitoviruses.

Evolution May 9, 2023

Evolutionary cell biology study shows how energy production can be optimized to ensure rapid growth without respiration

In a paper published today, researchers from the Randall Centre for Cell & Molecular Biophysics and The Crick use an evolutionary cell biology approach in two related fission yeasts, one that acquires energy by respiration ...

Evolution May 2, 2023

Scientists present evidence for a billion-years arms race between viruses and their hosts

Researchers have proposed a new evolutionary model for the origin of a kingdom of viruses called Bamfordvirae, suggesting a billion-years evolutionary arms race between two groups within this kingdom and their hosts.

Cell & Microbiology Apr 26, 2023

Type VI secretion systems: Weapons of bacterial destruction

Bacteria can be quite aggressive. Armed with an impressive array of mechanical and biochemical weapons, they don't mess around when it comes to combating their foes. Notable among these armaments is the Type VI Secretion ...

Cell & Microbiology Apr 25, 2023

Relatives discovered: Membrane proteins of cyanobacteria and higher organisms are structurally highly similar

The cells of living organisms are equipped with proteins that are involved in the shaping and remodeling of cellular membranes, thereby performing important tasks. The cell membrane encloses the cell interior, but is constantly ...

Evolution Apr 24, 2023

Metabolism is not the limiting factor in prokaryotic endosymbiosis, shows study

"One of the great mysteries of biology," says Eric Libby, former SFI Postdoctoral Fellow, now an associate professor at the Integrated Science Lab (IceLab), UmeƄ University in Sweden, "is eukaryogenesis, or how eukaryotes ...

Evolution Apr 21, 2023

Horodyskia is among the oldest multicellular macroorganisms, finds study

Horodyskia, characterized by a string of beads with uniform size and spacing, is a kind of macroscopic fossil with a record extending from the early Mesoproterozoic Era (~1.48 Ga) to the terminal Ediacaran Period (~550 Ma).

Cell & Microbiology Apr 20, 2023

How the 'master regulators' of cells make DNA accessible for gene expression

New insight into proteins called "pioneer factors" helps to explain their unusual ability to open up the typically dense genetic material within our cells. This behavior makes the genetic material accessible for proteins ...

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