DeepMind has released a new model named AlphaFold, which will be very useful in drug discovery of various kinds. It is worth noting that DeepMind is Google’s research lab centered on AI, and it has been doing the same for more than 5 years now. Deepmind also “revealed that the newest release of AlphaFold, the successor to AlphaFold 2, can generate predictions for nearly all molecules in the Protein Data Bank, the world’s largest open-access database of biological molecules. Isomorphic Labs, a spin-off of DeepMind focused on drug discovery, is applying the new AlphaFold model — which it co-designed — to therapeutic drug design, according to a post on the DeepMind blog, helping to characterize different types of molecular structures important for treating disease”. The company also claims that “the model can also accurately predict the structures of ligands — molecules that bind to “receptor” proteins and cause changes in how cells communicate — as well as nucleic acids (molecules that contain key genetic information) and post-translational modifications (chemical changes that occur after a protein’s created).”

The company also notes that “Predicting protein-ligand structures can be a useful tool in drug discovery as it can help scientists identify and design new molecules that could become drugs. Currently, pharmaceutical researchers use computer simulations known as “docking methods” to determine how proteins and ligands will interact. Docking methods require specifying a reference protein structure and a suggested position on that structure for the ligand to bind to”.

“With the latest AlphaFold, however, there’s no need to use a reference protein structure or suggested position. The model can predict proteins that haven’t been “structurally characterized” before while at the same time simulating how proteins and nucleic acids interact with other molecules — a level of modeling that DeepMind says isn’t possible with today’s docking methods”, the company says. In a blog post, the company wrote, “Early analysis also shows that our model greatly outperforms [the previous generation of] AlphaFold on some protein structure prediction problems that are relevant for drug discovery, like antibody binding”. “Our model’s dramatic leap in performance shows the potential of AI to greatly enhance scientific understanding of the molecular machines that make up the human body.”


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