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Highly Accurate Protein Structure Prediction with AlphaFold

paper
Nature(peer-reviewed)·nature.com/articles/s41586-021-03819-2

Credibility Rating

5/5
Gold(5)

Gold standard. Rigorous peer review, high editorial standards, and strong institutional reputation.

Rating inherited from publication venue: Nature

Landmark AI capabilities paper demonstrating AI solving a major scientific problem; relevant to AI safety discussions around transformative AI, capability jumps, and beneficial AI applications, though not directly an alignment or safety paper.

Metadata

Importance: 72/100journal articleprimary source

Summary

AlphaFold is DeepMind's deep learning system that achieved near-experimental accuracy in predicting 3D protein structures from amino acid sequences, effectively solving the 50-year-old protein folding problem. Validated at CASP14, it incorporates evolutionary, physical, and geometric constraints into a novel neural network architecture. This represents a landmark demonstration of AI solving a major open scientific problem.

Key Points

  • •Achieved median backbone accuracy of 0.96Å RMSD on CASP14 targets, surpassing all other methods and approaching experimental resolution limits.
  • •Uses multiple sequence alignments (MSAs) and pairwise residue representations processed through attention-based 'Evoformer' blocks to capture evolutionary and structural constraints.
  • •Can predict structures even for proteins with no homologous known structures, addressing a critical gap in structural biology coverage.
  • •Represents a paradigm-shifting application of deep learning to a hard scientific problem, with downstream implications for drug discovery, biology, and AI capability assessment.
  • •Catalyzed release of the AlphaFold Protein Structure Database, providing predicted structures for virtually all known proteins (~200M entries).

Cited by 2 pages

PageTypeQuality
Scientific Research CapabilitiesCapability68.0
Google DeepMindOrganization37.0

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 Subjects

 
 Computational biophysics 
 Machine learning 
 Protein structure predictions 
 Structural biology 

 
 

 
 
 

 
 

 
 

 
 Abstract

 Proteins are essential to life, and understanding their structure can facilitate a mechanistic understanding of their function. Through an enormous experimental effort 1 , 2 , 3 , 4 , the structures of around 100,000 unique proteins have been determined 5 , but this represents a small fraction of the billions of known protein sequences 6 , 7 . Structural coverage is bottlenecked by the months to years of painstaking effort required to determine a single protein structure. Accurate computational approaches are needed to address this gap and to enable large-scale structural bioinformatics. Predicting the three-dimensional structure that a protein will adopt based solely on its amino acid sequence—the structure prediction component of the ‘protein folding problem’ 8 —has been an important open research problem for more than 50 years 9 . Despite recent progress 10 , 11 , 12 , 13 , 14 , existing methods fall far short of atomic accuracy, especially when no homologous structure is available. Here we provide the first computational method that can regularly predict protein structures with atomic accuracy even in cases in which no similar structure is known. We validated an entirely redesigned version of our neural network-based model, AlphaFold, in the challenging 14th Critical Assessment of protein Structure Prediction (CASP14) 15 , demonstrating accuracy competitive with experimental structures in a majority of cases and greatly outperforming other methods. Underpi

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