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E-Mail IMAGE: Regions of the protein s flexibility: not very flexible (blue), moderately flexible (green/yellow) and highly flexible (red). However, both the central alpha helix and the N-terminus (start of the protein) display. view more Credit: Adam Damry Proteins are the key component in all modern forms of life. Haemoglobin, for example, transports the oxygen in our blood; photosynthesis proteins in the leaves of plants convert sunlight into energy; and fungal enzymes help us to brew beer and bake bread. Researchers have long been examining the question of how proteins mutate or come into existence in the course of millennia. That completely new proteins - and, with them, new properties - can emerge practically out of nothing, was inconceivable for decades, in line with what the Greek philosopher Parmenides said: Nothing can emerge from nothing (ex nihilo nihil fit). Working with colleagues from the USA and Australia, researchers from the Universi ....
Last fall brought a huge surge of COVID-19 cases across the U.S. These occurred simultaneously and with similar severity almost nationwide, with little regard to the extent or enforcement of ....
Why do women have more reactions to COVID vaccines? Study: Women report worse vaccine side effects than men By Chasity Maxie | March 11, 2021 at 7:52 PM CST - Updated March 11 at 7:52 PM BIRMINGHAM, Ala. (WBRC) - A recent study from the Centers for Disease Control shows women report more side effects from COVID-19 vaccines than men. But why are more women having these reactions? A top Alabama public health doctor said the data is very preliminary, but women could be having more severe reactions than men because of a difference in genetics and hormones. The CDC said the difference in reactions to vaccines between men and women is not new. But when it comes to the COVID-19 vaccines, women are more likely to report side effects from the shots. ....
Credit: John Skalicky/USC A new model of aging takes into account not only genetics and environmental exposures but also the tiny changes that randomly arise at the cellular level. University Professor Caleb Finch introduced the Tripartite Phenotype of Aging as a new conceptual model that addresses why lifespan varies so much, even among human identical twins who share the same genes. Only about 10 to 35 percent of longevity can be traced to genes inherited from our parents, Finch mentioned. Finch authored the paper introducing the model with one of his former graduate students, Amin Haghani, who received his PhD in the Biology of Aging from the USC Leonard Davis School in 2020 and is now a postdoctoral researcher at UCLA. In the article, they propose that the limited heritability of aging patterns and longevity in humans is an outcome of gene-environment interactions, together with stochastic, or chance, variations in the body s cells. These random changes can inclu ....
At the height of a luminous career in genetics, Ron Davis, professor of biochemistry and genetics at Stanford University in California, switched to researching a disease that many of his ....