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Latest Euchromatin Stories

2013-02-08 00:20:04

Genes relocated from their correct position in the nucleus cause them to malfunction and this may lead to the heart, blood vessels and muscles breaking down.Singapore, Feb 8, 2013 - (ACN Newswire) - Scientists from Singapore and Germany have identified that the proteins lamin A (Lmna) and lamin B receptor (Lbr) are essential for holding silent genes in their correct position at the edge of the nucleus, in the form of heterochromatin(1). A deviation from their normal position will cause the...

2011-04-19 13:07:14

Berkeley Lab Scientists Discover Dynamic Double-Strand Break Repair in Heterochromatin DNA is under constant attack, from internal factors like free radicals and external ones like ionizing radiation. About 10 double-strand breaks "“ the kind that snap both backbones of the double helix "“ occur every time a human cell divides. To prevent not only gene mutations but broken chromosomes and chromosomal abnormalities known to cause cancer, infertility, and other diseases in humans,...

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2010-12-22 15:10:57

The most detailed annotation yet of the fruit-fly genome points the way to understanding the genomes of all organisms In the past decade researchers have made astonishing progress in the rapid and accurate sequencing of genomes from all realms of life. Yet the listing of chemical base pairs has gotten far ahead of understanding how the information they contain becomes functional. Even the best-understood genomes conceal mysteries. Genetic information carried by DNA and RNA operates together...

2009-12-10 12:17:30

A gene which is essential for stem cells' capabilities to become any cell type has been identified by researchers at the Hebrew University of Jerusalem and the University of California, San Francisco. The discovery represents a further step in the ever-expanding field of understanding the ways in which stem cells develop into specific cells, a necessary prelude towards the use of stem cell therapy as a means to reverse the consequences of disease and disability. The identification of the...

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2009-04-21 08:00:00

The photoreceptor cells in the retinas of nocturnal mammals have a unique nuclear organisation and act as light-guiding micro-lenses. This improves nocturnal visionThe DNA of a mammalian cell is about two metres long if all base pairs were aligned in one string. To fit this genetic material in a nucleus of only a few microns diameter, the DNA is wrapped around millions of so-called histon proteins that are arranged like pearls on a string, leading to a 10,000-fold compaction of the DNA. This...

2009-04-17 11:25:08

The eyes of nocturnal mammals have very large numbers of highly-sensitive rod photoreceptors (the cell type responsible for night vision). They have to perceive light which is less than a millionth of the intensity of daylight. An international team headed by LMU researchers Dr. Boris Joffe, Dr. Irina Solovei and Professor Thomas Cremer has now succeeded in demonstrating that a nocturnal lifestyle and the challenges posed by it have a dramatic effect on the organisation of the nuclei of rod...

2009-04-16 14:19:26

Researchers have discovered an important element for making night vision possible in nocturnal mammals: the DNA within the photoreceptor rod cells responsible for low light vision is packaged in a very unconventional way, according to a report in the April 17th issue of Cell, a Cell Press publication. That special DNA architecture turns the rod cell nuclei themselves into tiny light-collecting lenses, with millions of them in every nocturnal eye."The conventional architecture seen in almost...


Word of the Day
conjunto
  • A style of popular dance music originating along the border between Texas and Mexico, characterized by the use of accordion, drums, and 12-string bass guitar and traditionally based on polka, waltz, and bolero rhythms.
The word 'conjunto' comes through Spanish, from Latin coniūnctus, past participle of coniungere, to join together; see conjoin