AlphaFold: Difference between revisions
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See [[Theoretical_models#2020:_CASP_14]] for more about the initial demonstration at CASP14, and the reactions to it. [[AlphaFold2_examples_from_CASP_14]] describes a detailed analysis of two of the CASP14 predictions. | See [[Theoretical_models#2020:_CASP_14]] for more about the initial demonstration at CASP14, and the reactions to it. [[AlphaFold2_examples_from_CASP_14]] describes a detailed analysis of two of the CASP14 predictions. | ||
==AlphaFold published in 2021== | |||
AlphaFold was published in July, 2021<ref name="af2021">PMID: 34265844</ref>. Methods were described in considerable detail. The source code, trained weights, and inference script were made available under an open-source license. Structure prediction required about one GPU (Graphics Processing Unit) minute per model of about 384 amino acids. | |||
Impressively, AlphaFold had remarkable success predicting a set of 10,795 protein chain structures (filtered for high reliability, lengths restricted to 80-1,400 residues) published in the [[PDB]] after AlphaFold's training set<ref>The training set cutoff was 2018/04/30. The test set was obtained between then and 2021/02/15.</ref>. Overall alpha carbon accuracy had a median of 1.46 Å [[Calculating GDT TS|RMSD]] at 95% coverage. The majority of chain structures were predicted with full-chain alpha carbon RMSD values <2 Å. About 25% were predicted with RMSD >4 Å. | |||
Importantly, each prediction comes with a confidence score that reliably predicts the accuracy of the predicted structure. | |||
Accurate prediction of sidechains required accurate prediction of the main chain. Accurate prediction required a multiple sequence alignment depth >~30 sequences, with a depth of ~100 sequences being adequate. | |||
==References== | ==References== | ||
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