For the first time in history, a change will be made to the atomic weights of some elements listed on the Periodic table of the chemical elements posted on walls of chemistry classrooms and on the inside covers of chemistry textbooks worldwide. …
Scientists at the University of California, Berkeley, and Lawrence Berkeley National Laboratory have taken the first stab at a “periodic table” of the protein structures – an organized map of the building blocks used over and over again to construct the billions of complex proteins that make up life on Earth. The three-dimensional map depicts similarities and differences among the building blocks, letting scientists visualize the universe of possible protein structures – the many possible twists, turns and folds – and see evolutionary changes that may have occurred with time.