Tag Archive for 'Chromatin'

Illustration of a DNA molecule. Image credit: Christoph Bock, Max Planck Institute for Informatics / CC BY-SA 3.0.

Long-Distance Gene Control Appeared Over 650 Million Years Ago, Study Suggests

May 7, 2025 by News Staff

Distal regulation — the ability to control genes from far away, over many tens of thousands of DNA letters — appeared at the very dawn of animal...

Sandoval-Velasco et al. assembled the genome and 3D chromosomal structures of a 52,000-year-old woolly mammoth. Image credit: Sandoval-Velasco et al., doi: 10.1016/j.cell.2024.06.002.

52,000-Year-Old Woolly Mammoth Skin Retained Its Ancient Genome Architecture: Study

Jul 11, 2024 by News Staff

Scientists from Baylor College of Medicine and elsewhere say they have discovered subfossils of ancient chromosomes in the remains of a female woolly mammoth...

Ancyromonas sigmoides, an understudied microbe that holds enormous promise for investigations into the origin of eukaryotes. Image credit: Naoji Yubuki.

Chromatin First Evolved in Ancient Microbes 1-2 Billion Years Ago, New Research Suggests

Jun 13, 2022 by News Staff

Chromatin is the ensemble of genomic DNA and a large number of proteins. Despite its fundamental role in biology of eukaryotic cells, scientists lack a...

Photograph and line drawing of the Caudipteryx specimen. Image credit: Zheng et al., doi: 10.1038/s42003-021-02627-8.

Paleontologists Find Chromatin Threads in Fossilized Dinosaur Cartilage

Sep 27, 2021 by Enrico de Lazaro

Paleontologists have analyzed cartilage material from Caudipteryx, an oviraptorosaurid dinosaur that lived in what in now China some 125 million years...

Left: a 3D illustration of the nucleus representing the classical theory of DNA organization at its center. Right: microscopic image of the nucleus of a fruit fly larva’s muscle cell; the long chains of DNA (red) are attached to the nuclear lamina (green) -- the inner layer of the nuclear membrane. Image credit: Weizmann Institute of Science.

New Images Reveal 3D Chromatin Organization in Live Cell Nuclei

Sep 10, 2021 by News Staff

Chromatin is a substance within a chromosome consisting of DNA and protein. The major proteins in chromatin are histones, which help package the DNA in...

Su et al. report a multiplexed error-robust fluorescence in situ hybridization (MERFISH)-based method for genome-scale chromatin tracing and demonstrate simultaneous imaging of more than 1,000 genomic loci and nascent transcripts of more than 1,000 genes together with landmark nuclear structures. Image credit: Su et al., doi: 10.1016/j.cell.2020.07.032.

Researchers Capture High-Resolution 3D Images of Human Chromosomes

Nov 20, 2020 by News Staff

A team of scientists at Harvard University has developed a new imaging technology for visualizing organization of chromatin, a substance within a chromosome...

This scanning electron microscope image shows a tardigrade. Image credit: Diane Nelson, National Park Service, U.S. Department of the Interior.

Study: Tardigrades’ Unique Protein Forms Protective Cloud against Extreme Survival Threats

Oct 1, 2019 by News Staff

Tardigrades, also known as water bears and moss piglets, are small invertebrate animals that are found in marine, freshwater, and terrestrial habitats...

Only Half of Chromosome is DNA, New Study Reveals

Nov 24, 2016 by News Staff

DNA makes up only half of the material inside chromosomes, according to a new study published in the journal Molecular Cell. Up to 47% of their structure...