Every gene in the nucleus of an animal or plant cell is packaged into a beads-on-a-string like structure called nucleosomes: the DNA of the gene forms the string and a complex of proteins called histones forms the beads around ...
Biotechnology
Feb 11, 2013
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A single embryonic stem cell can develop into more than 200 specialized cell types that make up our body. This maturation process is called differentiation and is tightly regulated. If the regulation is lost, specialized ...
Cell & Microbiology
Feb 7, 2013
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(Phys.org)—Crime can happen anywhere, but it usually doesn't. Researchers have noticed that criminal activity seems to be concentrated in self-perpetuating hotspots. Crime leads to more crime. Then, from these epicenters, ...
Mathematics
Feb 4, 2013
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By reproducing in the laboratory the complex interactions that cause human genes to turn on inside cells, Duke University bioengineers have created a system they believe can benefit gene therapy research and the burgeoning ...
Biotechnology
Feb 3, 2013
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In this week's issue of Science Signaling (22 January, 2013), Danen and colleagues of the Division of Toxicology of LACDR report novel insights into the question how stem cells decide to commit suicide when their DNA is damaged.
Cell & Microbiology
Jan 23, 2013
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(Phys.org)—Epigenetics - the science of how gene activity can be altered without changes in the genetic code - plays a critical role in every aspect of life, from the differentiation of stem cells to the regulation of metabolism ...
Biotechnology
Jan 8, 2013
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In a novel use of gene knockout technology, researchers at the University of California, San Diego School of Medicine tested the same gene inserted into 90 different locations in a yeast chromosome – and discovered that ...
Cell & Microbiology
Jan 3, 2013
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Hybrid plants provide much higher yield than their homozygous parents. Plant breeders have known this for more than 100 years and used this effect called heterosis for richer harvests. Until now, science has puzzled over ...
Biotechnology
Dec 3, 2012
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Chromatin remodeling—the packaging and unpackaging of genomic DNA and its associated proteins—regulates a host of fundamental cellular processes including gene transcription, DNA repair, programmed cell death as well ...
Biochemistry
Nov 29, 2012
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The molecular mechanisms whereby a spectrum of dahlias, from white to yellow to red to purple, get their colour are already well known, but the black dahlia has hitherto remained a mystery. Now, a study published in BioMed ...
Plants & Animals
Nov 22, 2012
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