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November 30, 2020 06:48 pm

In a Major Scientific Breakthrough, AI Predicts the Exact Shape of Proteins

Researchers have made a major breakthrough using artificial intelligence that could revolutionize the hunt for new medicines. The scientists have created A.I. software that uses a protein's DNA sequence to predict its three-dimensional structure to within an atomâ(TM)s width of accuracy. weiserfireman shares a report: The achievement, which solves a 50-year-old challenge in molecular biology, was accomplished by a team from DeepMind, the London-based artificial intelligence company that is part of Google parent Alphabet. Until now, DeepMind was best known for creating A.I. that could beat the best human players at the strategy game Go, a major milestone in computer science. DeepMind achieved the protein shape breakthrough in a biennial competition for algorithms that can be used to predict protein structures. The competition asks participants to take a protein's DNA sequence and then use it to determine the protein's three-dimensional shape. Across more than 100 proteins, DeepMind's A.I. software, which it called AlphaFold 2, was able to predict the structure to within about an atom's width of accuracy in two-thirds of cases and was highly accurate in most of the remaining one-third of cases, according to John Moult, a molecular biologist at the University of Maryland who is director of the competition, called the Critical Assessment of Structure Prediction, or CASP. It was far better than any other method in the competition, he said.

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