Tiny robots could serve all kinds of useful functions, but shrinking their actuators has proven challenging. Now researchers at the University of Wollongong (UOW) in Australia have made artificial ...
When people think of DNA, they visualize a string-like double helix structure. In reality, the DNA double helix in cells is supercoiled and constrained into loops. This supercoiling and looping are ...
A cell has many ways to regulate gene expression, one of which is the structure of the genome itself; active genes have to be accessible to the cellular machinery to be expressed. The DNA in the ...
DNA, the diverse combination of just four nucleotide letters that writes our genetic code, can do more than just form a double helix. In a new study from the National Institutes of Health (NIH) and ...
When people think of DNA, they visualize a string-like double helix structure. In reality, the DNA double helix in cells is supercoiled and constrained into loops. This supercoiling and looping are ...
As it squeezes down the chromatin fibre, the cohesin protein complex extrudes a growing loop of DNA - a bit like the quick-lacing system of trail-running shoes. But what is powering the movement of ...
Picture in your mind a traditional “landline” telephone with a coiled cord connecting the handset to the phone. The coiled telephone cord and the DNA double helix that stores the genetic material in ...
The double helix of DNA is one of the most iconic symbols in science. By imitating the structure of this complex genetic molecule we have found a way to make artificial muscle fibers far more powerful ...
The (when stretched) two-meter-long DNA molecule in each human cell is continuously being unpacked and packed again to enable the expression of genetic information. When genes must be accessed for ...
A team of physicists working at the intersection of theory and experiment are shedding new light on the 'teamwork' of molecular motors -- called RNA polymerases (RNAPs) -- that mediate DNA ...
Scientists have elucidated genome-wide patterns in the complex structures formed by the DNA of bacteria in different environmental conditions. These complex structures in DNA could be playing ...
The transcribing RNA polymerase induces torsional strain in the DNA; in front of the polymerase, DNA is overwound (referred to as positive supercoiling), and behind it DNA is underwound (referred to ...
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