With new probes, scientists can see how four-stranded DNA interacts with molecules in living human cells and clarifies their role in cellular processes. DNA usually forms the classic double helix shape of two strands wrapped around each other. While DNA can form more exotic shapes in test tubes, few are seen in real living cells. […]
DNA in water to discover genes of invasive fish – ScienceDaily
Invasive round goby fish have impacted fishing in the Great Lakes and Finger Lakes by competing with native species and eating the eggs of some species of wild fish. However, the camouflaged bottom dwellers can be difficult to find and collect – especially when they are entering a new body of water for the first […]
With the new method, the pocket-sized DNA sequencer achieves almost perfect accuracy – ScienceDaily
Researchers have found a simple way to eliminate almost all of the sequencing errors caused by a widely used portable DNA sequencer. This enables scientists working outside the laboratory to potentially study and track microorganisms such as the SARS-CoV-2 virus more efficiently. With the help of special molecular tags, the team was able to reduce […]
A Beginners Guide to DNA Origami – ScienceDaily
In a technique known as DNA origami, researchers repeatedly fold long strands of DNA to construct a variety of tiny 3D structures, including miniature biosensors and drug delivery containers. Founded in 2006 at the California Institute of Technology, DNA Origami has attracted hundreds of new researchers over the past decade, eager to build containers and […]
Ancient DNA Analysis Shows Asian Migration and Plague – ScienceDaily
Northeast Asia has a complex history of migration and plague outbreaks. This is the essence of an international archaeogenetic study published in Advances in science and head of the Department of Archeology and Classics at Stockholm University. The study examined genomic data from archaeological remains of 40 people excavated in Northeast Asia. "It is remarkable […]
Antibiotic Resistance Through Random DNA Sequences – ScienceDaily
An important and still unanswered question is how new genes that cause antibiotic resistance are created. In a new study, Swedish and American researchers have shown how new genes that create resistance can arise from completely random DNA sequences. The results were published in the journal PLOS genetics. Antibiotic resistance is a major global problem […]
New circadian clock study shows junk DNA plays a key role in regulating rhythms – ScienceDaily
If you've ever had a bad case of jet lag, you know how a disturbance in your body's circadian rhythm makes it difficult to function. Molecular circadian "clocks" exist in cells throughout the body and control more than just sleep and wake cycles – they are critical to many aspects of human health. For more […]
Ancient DNA retells story of Caribbean’s first people, with a few plot twists — ScienceDaily
The history of the Caribbean’s original islanders comes into sharper focus in a new Nature study that combines decades of archaeological work with advancements in genetic technology. An international team led by Harvard Medical School’s David Reich analyzed the genomes of 263 individuals in the largest study of ancient human DNA in the Americas to […]
Biochemists use protein engineering to transfer photocaging groups to DNA — ScienceDaily
Biochemists have developed a new strategy for controlling the biological functions of DNA (deoxyribonucleic acid) by means of light and therefore provide a tool to investigate processes which take place in cells. DNA (deoxyribonucleic acid) is the basis of life on earth. The function of DNA is to store all the genetic information, which an […]
Newly described chemical reaction could have assembled DNA building blocks before life forms and their enzymes existed — ScienceDaily
Chemists at Scripps Research have made a discovery that supports a surprising new view of how life originated on our planet. In a study published in the chemistry journal Angewandte Chemie, they demonstrated that a simple compound called diamidophosphate (DAP), which was plausibly present on Earth before life arose, could have chemically knitted together tiny […]