Page 5 - Dna Replication News Today

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 us...

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 Brazils move to ban import of Russian "Sputnik V" COVID vaccine April 29, 2021 / 4:39 AM / CBS/AFP Brazils COVID crisis reaches "catastrophe" Washington — Scientists have backed the Brazilian drug regulators decision to stop the import of Russias 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 man...

Japanese–European scientists detect novel genetic mitochondrial disorder The list of known genetic mitochondrial disorders is ever-growing, and ongoing research continues to identify new disorders in this category. In an article recently published in Brain, a Japanese-European team of scientists, including researchers from Fujita Health University, describe mutations in the LIG3 gene, which plays a crucial role in mitochondrial DNA replication. These mutations cause a previously unknown syndr...

Critical mechanism allows deadly bacteria to gain resistance to antibiotics Researchers have identified a critical mechanism that allows deadly bacteria to gain resistance to antibiotics. The findings offer a potential new drug target in the search for effective new antibiotics as we face the growing threat of antimicrobial resistance (AMR) and infections caused by bacterial pathogens. The study investigated quinolone antibiotics which are used to treat a range of bacterial infections, includin...

Study demonstrates the impact of reverse antibiotic on gram-negative bacteria Scientists from Skoltech and MSU have investigated antibiotic nybomycin that could prove effective against bacteria resistant to other antibiotics. Their research was published in the journal Antimicrobial Agents and Chemotherapy. All bacterial cells contain topoisomerases, an important group of enzymes that help deal with spatial difficulties stemming from bacterial cell division associated with circular DNA replica...

DNA repair pathways exist to correct molecular damage caused by internal and external factors. However, any damage to these pathways can result in the creation of tumors and specific types of cancers.

New study unravels complete sequence of DNA repair mechanism Every living organism has DNA, and every living organism engages in DNA replication, the process by which DNA makes an exact copy of itself during cell division. While its a tried-and-true process, problems can arise. Break-induced replication (BIR) is a way to solve those problems. In humans, it is employed chiefly to repair breaks in DNA that cannot be fixed otherwise. Yet BIR itself, through its repairs to DNA and how it conducts t...