Search results for Prokaryote

Biotechnology Feb 27, 2025

An ancient RNA-guided system could simplify delivery of gene editing therapies

A vast search of natural diversity has led scientists at MIT's McGovern Institute and the Broad Institute of MIT and Harvard to uncover ancient systems with the potential to expand the genome-editing toolbox. These systems, ...

Astrobiology Feb 25, 2025

Laser-powered device tested on Earth could help detect microbial fossils on Mars

The first life on Earth formed four billion years ago, as microbes living in pools and seas: what if the same thing happened on Mars? If it did, how would we prove it? Scientists hoping to identify fossil evidence of ancient ...

Cell & Microbiology Feb 21, 2025

How do cells respond to changes? New study finds it's not all in the genes

Cells are constantly on the move, whether in a developing embryo or metastatic cancer. But how do cells adapt to the new environments they encounter? Traditionally, scientists have believed that cells adapt to changes and ...

Astrobiology Feb 19, 2025

Life on Mars? It probably looks like something you'd find in your stomach

We often forget how wonderful it is that life exists, and what a special and unique phenomenon it is. As far as we know, ours is the only planet capable of supporting life, and it seems to have arisen in the form of something ...

Biotechnology Feb 14, 2025

CRISPR system variant shows a novel DNA cleavage mechanism

Researchers have revealed new details about the CRISPR-Cas5-HNH/Cascade complex, a variant of the type I-E CRISPR-Cas system, providing insights into its DNA recognition and cleavage mechanisms.

Molecular & Computational biology Jan 18, 2025

Microbial diversity mapped: 42% of bacteria lack genomic data, study finds

Researchers at the U.S. Department of Energy (DOE) Joint Genome Institute (JGI), a DOE Office of Science User Facility located at Berkeley Laboratory, have published a study in Science Advances that evaluates the current ...

Molecular & Computational biology Jan 10, 2025

Analyzing diversity of reverse-transcriptase-containing viruses through global metagenomics

Viral reverse transcriptase (RT) plays a critical role in replication (e.g., retroviruses, that reverse transcribe RNA templates into complementary DNA) and genome mutations (e.g., diversity-generating retroelements in bacteriophages). ...

Ecology Dec 18, 2024

Small habitats, big consequences: Connectivity loss in pond networks threatens microbial biodiversity

In the midst of the ongoing global biodiversity crisis, even the smallest habitats like ponds demand our attention. Fragmentation of these habitats—driven by human activities like urbanization, agriculture, and land-use changes—poses ...

Ecology Dec 9, 2024

Scientists discover more mitochondria-like symbionts with surprising metabolic capacities

In 2021, scientists at the Max Planck Institute for Marine Microbiology in Bremen, Germany, reported an astonishing new form of symbiosis: They found a unique bacterium that lives inside a ciliate—a unicellular eukaryote—and ...

Cell & Microbiology Nov 28, 2024

Scientists reveal structural link for initiation of protein synthesis in bacteria

Within a cell, DNA carries the genetic code for building proteins. To build proteins, the cell makes a copy of DNA, called mRNA. Then, another molecule called a ribosome reads the mRNA, translating it into protein. But this ...

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