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On 22 May 2019, scientists from Queen's University boarded a modified Falcon 20 aircraft at Ottawa airport. Scheduled was a 'vomit comet' flight, where the plane repeatedly climbs to 8km in a steep parabola, alternating with a descent in freefall.
Helicases are molecular motors that translocate along single-stranded DNA and unwind duplex DNA. They rely on the consumption of chemical energy from nucleotide hydrolysis to drive their translocation. Specialized helicases play a critically important role in DNA replication by unwinding DNA at the front of the replication fork. The replicative helicases of the model systems bacteriophages T4 and T7, Escherichia coli and Saccharomyces cerevisiae have been extensively studied and characterized using biochemical methods. While powerful, their averaging over ensembles of molecules and reactions m...
UT Southwestern researchers have identified a new mechanism by which stress causes cells to stop dividing.
The poor bacteriophages in Yang Gao's lab are about to have a lot of bad days.
Scientists back Brazil's move to ban import of Russian "Sputnik V" COVID vaccine April 29, 2021 / 4:39 AM / CBS/AFP Brazil's COVID crisis reaches "catastrophe" Washington — Scientists have backed the Brazilian drug regulator's decision to stop the import of Russia's Sputnik V coronavirus vaccine, on the basis that batches they tested carried a live version of a common cold-causing virus. Top virologist Angela Rasmussen told AFP the finding "raises questions about the integrity of the manufacturing processes" and could be a safety issue for people with weaker immune systems if the p...