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University of Toronto scientists map entire yeast genome
University of Toronto scientists have devised a tool to help understand and predict the state of a cell by successfully mapping all 70,000 nucleosomes in yeast. Nucleosomes wrap DNA before it is transformed into proteins and are critical indicators and regulators of a cell's state. view more (2007-11-27)
Gerton Lab determines the composition of centromeric chromatin
The Stowers Institute's Gerton Lab has provided new evidence to clarify the structure of nucleosomes containing Cse4, a centromere-specific histone protein required for proper kinetochore function, which plays a critical role in the process of mitosis. The work, conducted in yeast cells, was published in the most recent issue of Molecular Cell. view more (2009-09-29)
Scientists discover a genetic code for organizing DNA within the nucleus
DNA - the long, thin molecule that carries our hereditary material - is compressed around protein scaffolding in the cell nucleus into tiny spheres called nucleosomes. view more (2006-07-20)
Evolutionarily preserved mechanism governs use of genes
Researchers at Uppsala University have found that the protein coding parts of a gene are packed in special nucleosomes. The same type of packaging is found in the roundworm C elegans, which is a primeval relative of humans. view more (2009-08-18)
Scientists map key landmarks in human genome
Dana-Farber Cancer Institute researchers have developed a powerful method for charting the positions of key gene-regulating molecules called nucleosomes throughout the human genome. view more (2007-01-17)
Scientists Identify Key Roadblock to Gene Expression
A team of scientists has provided, for the first time, a detailed map of how the building blocks of chromosomes, the cellular structures that contain genes, are organized in the fruit fly Drosophila melanogaster. view more (2008-05-09)
Scientists reveal structure of gateways to gene control
Scientists at Penn State University will reveal in the 29 March 2007 issue of the journal Nature the first complete high-resolution map of important structures that control how genes are packaged and regulated throughout an entire genome. view more (2007-03-29)
Molecular partners required for appropriate neuronal gene repression
In their efforts to understand the complex biology of life, scientists often seek to isolate individual elements of the puzzle for study, to break the problem down to a more manageable size. Single genes and molecules are closely analyzed to better understand their specific interactions with other single entities within larger systems. view more (2005-08-04)
HIRA, a new factor in the genome's 3D organizational assembly chain
At the heart of every cell, vital information is "written" on the DNA, a long molecular ribbon almost one meter long bundled inside the nucleus of the cell. For the DNA to fit inside this small space, it is rolled up like a ball of yarn in a highly organized structure called chromatin. Beyond its purely structural role, the spatial... view more... (2002-06-05)
Chromatin remodeling complex connected to DNA damage control
When molecular disaster strikes, causing structural damage to DNA, players in two important pathways talk to each other to help contain the wreckage, scientists at The University of Texas M. D. Anderson Cancer Center report in the August edition of Cell. view more (2007-08-10)
Conaway Lab uncovers function of potential cancer-causing gene product
The Stowers Institute's Conaway Lab has uncovered a previously unknown function of a gene product called Amplified in Liver Cancer 1 (Alc1), which may play a role in the onset of cancer. view more (2009-08-10)
Single molecular 'mark' seen as pivotal for genome compaction in spores and sperm
In higher order animals, genetic information is passed from parents to offspring via sperm or eggs, also known as gametes. In some single-celled organisms, such as yeast, the genes can be passed to the next generation in spores. view more (2006-09-18)
Novel regulatory mechanism identified for key tumor suppressor p53
Collaborating scientists from The Wistar Institute in Philadelphia and The Vienna Biocenter in Austria have identified a novel mechanism involved in normal repression of the p53 protein, perhaps the single most important molecule for the control of cancer in humans. view more (2006-11-16)
Workman Lab characterizes novel regulator of chromosome function
The Stowers Institute's Workman Lab has shed new light on a novel histone acetyltransferase protein complex called ATAC. Acetyltransferases are enzymes that introduce a new acetyl functional group into histone proteins, a process by which all chromosome functions are controlled. view more (2008-03-11)
Roles of DNA packaging protein revealed by Einstein scientists
Scientists at Albert Einstein College of Medicine of Yeshiva University have found that a class of chromatin proteins is crucial for maintaining the structure and function of chromosomes and the normal development of eukaryotic organisms. view more (2009-02-13)
Saved by junk DNA
VIB researchers linked to K.U.Leuven and Harvard University show that stretches of DNA previously believed to be useless 'junk' DNA play a vital role in the evolution of our genome. view more (2009-05-29)
Gene-regulating enzyme is also a target for anti-depressive drugs
In 2005, professor Ramin Shiekhattar, Ph.D., at The Wistar Institute and his colleagues reported details about an enzyme involved in appropriately repressing sets of neuronal genes in non-neuronal cells. view more (2006-06-26)
Penn researcher shows that DNA gets kinky easily at the nanoscale
Scientists have answered a long-standing molecular stumper regarding DNA: How can parts of such a rigid molecule bend and coil without requiring large amounts of force? view more (2006-11-06)
Scripps research team reverses Friedreich's ataxia defect in cell culture
In the new study, the researchers tested a variety of compounds that inhibited a class of enzymes known as histone deacetylases in a cell line derived from blood cells from a Fredreich's ataxia sufferer. view more (2006-08-22)
Gene-transcription machinery seen poised for action, held in check until needed
For some time, scientists have been tracking down the sequence of biochemical steps required to attract and assemble at the head end of a gene the molecular machinery needed to transcribe that gene to put to work the information it encodes. view more (2007-07-26)
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