vendredi 23 juillet 2021

"DeepMind says it will release the structure of every protein known to science"

https://www.technologyreview.com/202...-proteome/amp/

Quote:

Now the firm has announced that it has used its AI to predict the shapes of nearly every protein in the human body, as well as the shapes of hundreds of thousands of other proteins found in 20 of the most widely studied organisms, including yeast, fruit flies, and mice. The breakthrough could allow biologists from around the world to understand diseases better and develop new drugs.

So far the trove consists of 350,000 newly predicted protein structures. DeepMind says it will predict and release the structures for more than 100 million more in the next few months—more or less all proteins known to science.

“Protein folding is a problem I’ve had my eye on for more than 20 years,” says DeepMind cofounder and CEO Demis Hassabis. “It’s been a huge project for us. I would say this is the biggest thing we’ve done so far. And it’s the most exciting in a way, because it should have the biggest impact in the world outside of AI.”
This seems to me to be huge news. What are the implications over the next decade or so?

My layman's understanding has been that protein folding has been a major problem of molecular biology. "Solving" it seems like a huge breakthrough.

Of course, these things are never quite as "solved" as the press release usually makes them seem. For instance:

Quote:

In the new version of AlphaFold, predictions come with a confidence score that the tool uses to flag how close it thinks each predicted shape is to the real thing. Using this measure, DeepMind found that AlphaFold predicted shapes for 36% of human proteins with an accuracy that is correct down to the level of individual atoms. This is good enough for drug development, says Hassabis.

Previously, after decades of work, only 17% of the proteins in the human body have had their structures identified in the lab. If AlphaFold’s predictions are as accurate as DeepMind says, the tool has more than doubled this number in just a few weeks.
So there's still considerable room for improvement. Still, a major breakthrough.


via International Skeptics Forum https://ift.tt/3ztnqD5

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