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tag chromosome folding domains ecology

A microscope image of a dinoflagellate.
Dinoflagellate Genome Structure Unlike Any Other Known
Amanda Heidt | May 10, 2021 | 5 min read
The transcription of DNA drives the remarkably tidy organization of chromosomes in the dinoflagellate Symbiodinium microadriaticum.
Archaea Family Tree Blossoms, Thanks to Genomics
Amber Dance | Jun 1, 2018 | 10+ min read
Identification of new archaea species elucidates the domain’s unique  biology and sheds light on its relationship to eukaryotes.
Luminescence Developments Help Scientists See The Light
James Kling | May 11, 1997 | 9 min read
Biologists are constantly seeking more sensitive assays to detect the presence of organisms or telltale DNA, RNA, and proteins. Although radioactive tags incorporated into the target itself (or into a complementary strand)-and later detected by Geiger counters or film exposures-have traditionally given good sensitivity, the problems of waste disposal and laboratory monitoring have driven a search for alternative tags that have radioactivity's sensitivity but avoid its hazards. Fluorescent tags-
Building Nanoscale Structures with DNA
Arun Richard Chandrasekaran | Jul 16, 2017 | 10+ min read
The versatility of geometric shapes made from the nucleic acid are proving useful in a wide variety of fields from molecular computation to biology to medicine.
The Proteasome: A Powerful Target for Manipulating Protein Levels
John Hines and Craig M. Crews | May 1, 2017 | 10+ min read
The proteasome’s ability to target and degrade specific proteins is proving useful to researchers studying protein function or developing treatments for diseases.
The Shape of Heredity
Susan M. Gasser | Jul 1, 2009 | 10+ min read
By Susan M. Gasser The Shape of Heredity Tracking the dance of DNA and structural proteins within the nucleus shows that placement makes the difference between gene activity and silence. What's true of the best architecture is also true of cellular structures: form follows function. We biologists often take this mantra to an extreme, searching for the function of a molecule or gene without much consideration of its structure, its phys
Genetic Parasites and a Whole Lot More
Barry Palevitz | Oct 15, 2000 | 10+ min read
Photo: Ori Fragman, Hebrew University Hordeum spontaneum, the plant studied for BARE-1 retroelements. With genome sequences arriving almost as regularly as the morning paper, the public's attention is focused on genes--new genes to protect crops against pests; rogue genes that make bacteria resistant to antibiotics; faulty genes that, if fixed, could cure diseases such as muscular dystrophy. What many people don't realize is that genes account for only part of an organism's DNA, and in many c
Finding a Mate
Barbara Cunningham | Apr 1, 2001 | 9 min read
Available Two-hybrid Systems Graphic: Leza BerardoneGenome sequencing has produced a vast supply of proteins in need of a functional identity. One way to identify a protein's function is to identify its interacting partners, because proteins often work in pairs or as part of large complexes. Scientists traditionally have used biophysical or biochemical methods (such as affinity chromatography or co-immunoprecipitation) to study protein-protein interactions. More recently, two-hybrid and phage-d
A Genomic View of Oceanic Life
Leslie Pray | Oct 14, 2001 | 6 min read
Last year, scientists discovered a unique, energy-generating, light-absorbing protein previously unknown to exist in oceanic life. They named the protein proteorhodopsin.1 The bacteria that harbor it are a distinct phylogenetic group known as SAR86. This year, scientists learned that as much as 10 percent of the ocean's surface is occupied by these proteorhodopsin-containing bacteria--as many as 1x105 cells per milliliter of sea water.2 The researchers, led by marine microbiologist Edward DeLo
Pufferfish Genomes Probe Human Genes
Ricki Lewis | Mar 17, 2002 | 7 min read
It may be humbling to think that humans have much in common with pufferfish, but at the genome level, the two are practically kissing cousins. "In terms of gene complement, we are at least 90% similar—probably higher. There are big differences in gene expression levels and alternate transcripts, but if you're talking about diversity, number and types of proteins, then it's pretty difficult to tell us apart," says Greg Elgar, group leader of the Fugu genome project at the Medical Research C

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