PreprintCited by 9,391Protein Structure and DynamicsMachine Learning in BioinformaticsEnzyme Structure and Function

ColabFold - Making protein folding accessible to all

Open access
Mirdita, Milot, Schütze, Konstantin, Moriwaki, Yoshitaka, Heo, Lim, Ovchinnikov, Sergey, Steinegger, Martin·2021·Nature Methods

Preprint — published as 10.1038/s41592-022-01488-1 · Paper page

Abstract

ColabFold offers accelerated protein structure and complex predictions by combining the fast homology search of MMseqs2 with AlphaFold2 or RoseTTAFold. ColabFold’s 40 - 60× faster search and optimized model use allows predicting close to a thousand structures per day on a server with one GPU. Coupled with Google Colaboratory, ColabFold becomes a free and accessible platform for protein folding. ColabFold is open-source software available at github.com/sokrypton/ColabFold . Its novel environmental databases are available at colabfold.mmseqs.com Contact: milot.mirdita@mpibpc.mpg.de , so@fas.harvard.edu , martin.steinegger@snu.ac.kr

AI snapshot

Written from the paper’s full text.

TL;DR

ColabFold accelerates protein structure and complex prediction by replacing AlphaFold2/RoseTTAFold homology search with MMseqs2, making folding accessible via Google Colaboratory and local command-line tools. It reports 40–60-fold faster MSA generation, ~90-fold batch speed-up, and prediction accuracy matching AlphaFold2 on CASP14 and AlphaFold-multimer on ClusPro.

Key findings

  • ColabFold’s MMseqs2 search is 40–60-fold faster than AlphaFold2’s homology search, and batch prediction is ~90-fold faster by avoiding recompilation and adding early stopping; this enables close to 1,000 structures per day on one GPU.
  • On CASP14 free-modeling targets, mean TM-scores were 0.826 for ColabFold-AlphaFold2-BFD/MGnify, 0.818 for ColabFold-AlphaFold2-ColabFoldDB, 0.79 for AlphaFold2, 0.744 for AlphaFold-Colab, and 0.62 for ColabFold-RoseTTAFold-BFD/MGnify. Over all CASP14 targets, TM-scores were 0.887, 0.886, 0.888, and 0.754 for the respective methods excluding AlphaFold-Colab.
  • ColabFold achieved the highest accuracy for complex prediction on the ClusPro dataset with the AlphaFold-multimer model, though some targets performed better using residue-index mode.
  • The 1,762-protein *Methanocaldococcus jannaschii* proteome (proteins <1,000 amino acids) was predicted in 48 h on one Nvidia Titan RTX with early stopping at pLDDT ≥85; average pLDDTs for AlphaFold2 and ColabFold Stop ≥85 were 89.75 and 88.78 in a subsampled set of 50 proteins.

Methods

  • ColabFold combines an MMseqs2-based homology search server with AlphaFold2 or RoseTTAFold; it searches UniRef100/UniRef30, PDB70, and either BFD/MGnify or ColabFoldDB, using a diversity-aware filter and optional MSA pairing for complexes.
  • Benchmarks included 65 CASP14 targets containing 91 domains (20 free-modeling targets with 28 domains), 17 ClusPro complex targets evaluated with DockQ, and the *M. jannaschii* proteome; predictions were compared to experimental structures using TM-align and DockQ.
  • Run-time measurements separated MSA generation and model inference, using specified CPU/GPU systems; ColabFold modes were executed without templates for benchmarking.

Limitations

  • The paper states limitations of Google Colaboratory and provides the `colabfold_batch` command-line tool for tasks too large for Colab; it also notes AlphaFold-Colab cannot be used as a standalone and was excluded from the all-CASP14-target comparison.
  • Evident from the text: ColabFold benchmarks were run without templates, so template-enabled performance is not directly benchmarked; free-modeling CASP14 targets were used to optimize MMseqs2 search parameters, which may make those results optimistic.
  • Evident from the text: validation is limited to CASP14, ClusPro, and one proteome, so generalization to other target classes or larger proteomes is not established here.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1101/2021.08.15.456425

Cites

37 of 37 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

0 of 19 cited sources checked · 0 supported · 0 flagged

  • Findingown data

    ColabFold matches AlphaFold2 on CASP14 targets in prediction quality.

    “We show that ColabFold outperforms AlphaFold-Colab and matches AlphaFold2 on CASP14 targets and also matches AlphaFold-multimer on the ClusPro4,12 dataset in prediction quality.”
    Quote in the paperSubstantial claim
  • Findingown data

    ColabFold outperforms AlphaFold-Colab on CASP14 targets in prediction quality.

    “We show that ColabFold outperforms AlphaFold-Colab and matches AlphaFold2 on CASP14 targets and also matches AlphaFold-multimer on the ClusPro4,12 dataset in prediction quality.”
    Quote in the paperSubstantial claim
  • Findingreasoning

    ColabFold's optimized model utilization enables prediction of close to 1,000 structures per day on a server with one GPU.

    “ColabFold’s 40−60-fold faster search and optimized model utilization enables prediction of close to 1,000 structures per day on a server with one graphics processing unit.”
    Quote in the paperSubstantial claim
  • Findingown data

    ColabFold matches AlphaFold-multimer on the ClusPro dataset in prediction quality.

    “We show that ColabFold outperforms AlphaFold-Colab and matches AlphaFold2 on CASP14 targets and also matches AlphaFold-multimer on the ClusPro4,12 dataset in prediction quality.”
    Quote in the paperSubstantial claim
  • Findingown data

    AlphaFold2 (reduced_dbs, v2.1.1), ColabFold default and ColabFold Stop ≥ 85 have an average pLDDT of 90.68, 90.22 and 89.33, respectively, for 50 randomly sampled proteins.

    “AlphaFold2 (reduced_dbs, v2.1.1), ColabFold (commit f5d0cec) default and ColabFold Stop ≥ 85 have an average pLDDT of 90.68, 90.22 and 89.33, respectively, for 50 randomly sampled proteins.”
    Quote in the paperSubstantial claim
  • Classified as probably not a substantial claim. 18
  • Borderline: one of the tests for a substantial claim is unclear. 1
  • The quote only partly states this claim. 2
  • May combine two claims. 17
  • Probably not a substantial claim: may not pass S1 (asserted), S3 (load-bearing), S4 (based).

    Findingnone given
    § Main

    The prediction of target T1084 can be improved from a TM-score of 0.457 to 0.872 by ColabFold if MMseqs2's compositional filter is disabled.

    “The prediction of target T1084 can be improved from a TM-score of 0.457 to 0.872 by ColabFold if MMseqs2’s compositional filter is disabled (Supplementary Fig. 3).”
    Quote in the paperNot a substantial claim
  • Borderline on S4 (based): unclear from the text.

    Findingnone given
    § Main

    The average pLDDTs of AlphaFold2 and ColabFold Stop ≥85 were 89.75 and 88.78 in a subsampled set of 50 proteins.

    “The average pLDDTs of AlphaFold2 and ColabFold Stop ≥ 85 were 89.75 and 88.78 in a subsampled set of 50 proteins.”
    Quote in the paperNot a substantial claim
  • The quote only partly states this claim.

    Findingcitation

    ColabFold's homology search is 40-60-fold faster than AlphaFold2's.

    “ColabFold’s 40−60-fold faster search and optimized model utilization enables prediction of close to 1,000 structures per day on a server with one graphics processing unit.”
    Quote in the paperSubstantial claim0 of 2 sources checked
    • cites [10] (2017), Nat. Biotechnol. source

      Not checked in the free run.

    • cites [11] source

      Not checked in the free run.

  • May combine two claims.

    Findingown data

    Early stopping results in a speed-up of 3.7-fold compared with the default and 4.8-fold compared with always recompiling.

    “Early stopping results in a speed-up of 3.7-fold compared with the default and 4.8-fold compared with always recompiling.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Filtering each cluster to keep only the 10 most diverse sequences reduced the total number of sequences from 2.5 billion to 513 million, requiring only 84 GB RAM for headers and sequences.

    “To reduce the size of the database we filtered each cluster, keeping only the 10 most diverse sequences using mmseqs filterresult --diff 10. This reduced the total number of sequences from 2.5 billion to 513 million, thus requiring only 84 GB RAM for headers and sequences.”
    Quote in the paperSubstantial claim
    • Rests on an assumption: BFD is a clustered protein database consisting of ~2.2 billion proteins organized in 64 million clusters.
    • Rests on an assumption: MGnify (2019_05) contains ~300 million environmental proteins.
  • May combine two claims.

    Findingown data

    Over all CASP14 targets, TM-scores are 0.887 for ColabFold-AlphaFold2-BFD/MGnify, 0.886 for ColabFold-AlphaFold2-ColabFoldDB, 0.888 for AlphaFold2, and 0.754 for ColabFold-RoseTTAFold-BFD/MGnify.

    “Over all CASP14 targets (excluding AlphaFold-Colab because it cannot be used as a standalone) the TM-scores are 0.887, 0.886, 0.888 and 0.754 for the respective methods.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The Methanocaldococcus jannaschii proteome of 1,762 proteins shorter than 1,000 amino acids can be predicted in 48 h with early stopping at pLDDT ≥85 on one Nvidia Titan RTX, while sacrificing little or no prediction accuracy.

    “All together, we show that the Methanocaldococcus jannaschii proteome of 1,762 proteins shorter than 1,000 amino acids can be predicted in 48 h with early stopping at a pLDDT (predicted local distance difference test; a per-residue confidence metric) of ≥85 on one Nvidia Titan RTX (Fig. 2d), while sacrificing little or no prediction accuracy (Methods 2.7.4).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingreasoning

    Sorting input queries by sequence length, processing them in ascending order, and padding input features by 10% avoids recompilation for sequences within the query length plus a 10% margin, resulting in a large speed-up for short proteins.

    “We sort the input queries by sequence length and process them in ascending order. We pad the input features by 10% (by default). All sequences that lie within the query length and an additional 10% margin are not required to be recompiled, resulting in a large speed-up for short proteins.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingreasoning

    Changing the random seed can result in different cluster centers and thus different structure predictions.

    “Changing the random seed can result in different cluster centers and thus different structure predictions.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingreasoning

    In AlphaFold2, residue index manipulation allows modeling of complexes, and the paired alignment is often not needed.

    “In AlphaFold2 we find the same to be true, although surprisingly the paired alignment is often not needed (Fig. 2c).”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    Rerunning the CASP14 benchmark with a recycle count of 12 improved targets with little MSA information, resulting in an increased average TM-score of 0.898.

    “Rerunning the CASP14 benchmark with a recycle count of 12 resulted in an improvement of targets with little MSA information, resulting in an increased average TM-score of 0.898 (Supplementary Fig. 6).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Additional recycles can often improve a model at the cost of a longer run time.

    “We exposed the recycle count as a customizable parameter given that additional recycles can often improve a model (Supplementary Fig. 6) at the cost of a longer run time.”
    Quote in the paperSubstantial claim
  • May combine two claims. The quote only partly states this claim.

    Findingown data

    The final ColabFoldDB database consists of 209,335,865 representative sequences and 738,695,580 members.

    “The final database consists of 209,335,865 million representative sequences and 738,695,580 members (see the Data Availability section for the input files).”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    Mean TM-scores for free-modeling CASP14 targets are 0.826 for ColabFold-AlphaFold2-BFD/MGnify, 0.818 for ColabFold-AlphaFold2-ColabFoldDB, 0.79 for AlphaFold2, 0.744 for AlphaFold-Colab, and 0.62 for ColabFold-RoseTTAFold-BFD/MGnify.

    “The mean TM-scores for the free-modeling targets are 0.826, 0.818, 0.79, 0.744 and 0.62 for ColabFold-AlphaFold2-BFD/MGnify, ColabFold-AlphaFold2-ColabFoldDB, AlphaFold2, AlphaFold-Colab and ColabFold-RoseTTAFold-BFD/MGnify, respectively.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    MMseqs2 had a maximum resident set size of 308 GB during the ColabFoldDB search.

    “MMseqs2 had a maximum resident set size of 308 GB during the search.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § Main

    AlphaFold2 predicted 3D atomic coordinates of folded protein structures at a median GDT_TS of 92.4% in CASP14.

    “AlphaFold2 (ref. 1) was able to predict the 3D atomic coordinates of folded protein structures at a median global distance test total score (GDT_TS) of 92.4% in the latest round of the protein folding competition by the international community, CASP14 (Critical Assessment of protein Structure Prediction, round 14) (ref. 2).”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites ref. 1

      Not checked in the free run.

    • cites ref. 2

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § Main

    Evans et al. released AlphaFold-multimer, a refined version of AlphaFold2 for protein complex prediction.

    “Evans et al.4 have since released AlphaFold-multimer, a refined version of AlphaFold2 for the prediction of protein complexes.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites Evans et al.4 Evans, R. et al. bioRxiv 2021.10.04.463034 (2021).

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § Main

    For high-quality predictions, sequences should be provided in paired form to AlphaFold2.

    “For high-quality predictions it was shown that sequences should be provided in paired form to AlphaFold2 (ref. 22).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites ref. 22

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation
    § Main

    Many ideas of AlphaFold2 were independently reproduced and implemented in RoseTTAFold.

    “Many ideas of AlphaFold2 were independently reproduced and implemented in RoseTTAFold (ref. 3).”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites ref. 3

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S4 (based).

    Interpretationnone given
    § Abstract

    Coupled with Google Colaboratory, ColabFold becomes a free and accessible platform for protein folding.

    “Coupled with Google Colaboratory, ColabFold becomes a free and accessible platform for protein folding.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Premisecitation

    Environmental databases contain billions of proteins extracted from metagenomic and transcriptomic experiments, which often complement databases dominated by isolated genomes.

    “These environmental databases contain billions of proteins extracted from metagenomic and transcriptomic experiments, which often complement databases dominated by isolated genomes.”
    Quote in the paperNot a substantial claim0 of 2 sources checked
    • cites [1] source

      Not checked in the free run.

    • cites [6] (2020), Nucleic Acids Res.

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    AlphaFold-Colab results in less accurate predictions while still requiring long search times.

    “This results in less accurate predictions while still requiring long search times.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [9] (2021), Nature source

      Not checked in the free run.

  • May combine two claims.

    Premisecitation

    Tunyasuvunakool et al. developed AlphaFold-Colab, an AlphaFold2 Jupyter Notebook for Google Colaboratory, with input MSA built by HMMer against UniRef90 and an eightfold-reduced environmental database.

    “Concurrently, Tunyasuvunakool et al.9 developed an AlphaFold2 Jupyter Notebook for Google Colaboratory (referred to as AlphaFold-Colab), for which the input MSA is built by searching with HMMer against the UniProt Reference Clusters (UniRef90) and an eightfold-reduced environmental database.”
    Quote in the paperSubstantial claim0 of 1 sources checked
    • cites [9] (2021), Nature source

      Not checked in the free run.

  • May combine two claims.

    Interpretationreasoning

    Two highly accurate open-source prediction methods for single chains and one for protein complexes are now publicly available.

    “Thus, two highly accurate open-source prediction methods for single chains and one for protein complexes are now publicly available.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisenone given

    MMseqs2 was initially built to perform fast many-against-many sequence searches.

    “MMseqs2 was initially built to perform fast many-against-many sequence searches.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisecitation

    Increasing the model's internal parameter residue-index can also be done in AlphaFold2.

    “Shortly afterwards, Baek21 found that increasing the model's internal parameter, residue-index (the method that was used in RoseTTAFold), could also be done in AlphaFold2.”
    Quote in the paperNot a substantial claim0 of 1 sources checked
    • cites [21] Baek, M . Adding a big enough number for “residue_index” feature is enough to model hetero-complex using AlphaFold (green&cyan: crystal structure / magenta: predicted model w/ residue_index modification). https://twitter.com/minkbaek/status/1417538291709071362 (2021).

      Not checked in the free run.

  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationnone given

    The inter-chain predicted alignment error (inter-PAE) provided by AlphaFold2 helps to rank complexes.

    “The inter-chain predicted alignment error (inter-PAE) provided by AlphaFold2 helps to rank the complexes.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationreasoning

    ColabFold builds beyond AlphaFold2 by improving sequence search, providing tools for homo- and heteromer complexes, exposing advanced functionality, expanding environmental databases, and enabling large-scale batch prediction at ~90-fold speed-up.

    “ColabFold builds beyond the initial offerings of Alphafold2 by improving its sequence search, providing tools for modeling homo- and heteromer complexes, exposing advanced functionality, expanding the environmental databases and enabling large-scale batch prediction of protein structures, at an approximately 90-fold speed-up over AlphaFold2.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Study design and conductnone given

    MSA generation was repeated five times and the MSA generation times were averaged.

    “MSA generation was repeated five times and the MSA generation times were averaged.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Premisenone given

    AlphaFold2, depending on model configuration, subsamples the MSA to a maximum of 512 cluster centers and 1,024 extra sequences.

    “Alphafold2, depending on model configuration, subsamples the MSA to a maximum of 512 cluster centers and 1,024 extra sequences.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing). May combine two claims.

    Interpretationnone given

    The 2D renderer's advantage over a 3D renderer is that its images are very lightweight, can be used in animations and saved as vector graphics for lossless inclusion in documents.

    “The advantage over a 3D renderer is that the images are very lightweight, can be used in animations and saved as vector graphics for lossless inclusion in documents.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim.

    Study design and conductnone given

    For a fair comparison, AlphaFold2 was modified to allow HMMer and HHblits to access one CPU core.

    “For a fair comparison, AlphaFold2 was modified to allow HMMer and HHblits to access one CPU core.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Premisenone given

    AlphaFold2 improves the predicted protein structure by recycling (by default) three times, meaning that the prediction is fed multiple times through the model.

    “AlphaFold2 improves the predicted protein structure by recycling (by default) three times, meaning that the prediction is fed multiple times through the model.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Interpretationreasoning

    Enabling is_training (the stochastic dropout part of the model) can be used to sample an ensemble of models for the uncertain parts of the structure prediction.

    “Enabling the latter can be used to sample an ensemble of models for the uncertain parts of the structure prediction.”
    Quote in the paperNot a substantial claim
34 of 34
  • The paper relies on this without support.

    Searches against large environmental databases can take up to hours for a single protein and require more than 2 TB of storage space alone.

    “Due to their large size, searches can take up to hours for a single protein while requiring more than 2 TB of storage space alone.”
  • The paper relies on this without support.

    Executing deep neural networks requires GPUs with large GPU RAM even for ~1,000 residue proteins.

    “Second, to execute the deep neural networks, graphics processing units (GPUs) with a large amount of GPU RAM (random access memory) are required even for relatively common protein sizes of ~1,000 residues.”
  • The paper relies on this without support.

    For these proteins, MSA generation dominates the overall run time.

    “For these, however, the MSA generation dominates the overall run time.”
  • The paper relies on this without support.

    Eukaryotic protein diversity is not well represented in the databases BFD and MGnify.

    “The environmental search database presented an opportunity to improve structure predictions of non-bacterial sequences given that, for example, eukaryotic protein diversity is not well represented in the databases BFD and MGnify.”
  • The paper relies on this without support.

    Limitations in assembly and gene calling due to complex intron and exon structures result in underrepresentation in reference databases.

    “Limitations in assembly and gene calling due to complex intron and exon structures result in underrepresentation in reference databases.”
  • The paper relies on this without support.

    AlphaFold2 was initially released without the capability to model protein complexes.

    “AlphaFold2 was initially released without the capability to model protein complexes.”
  • The paper relies on this without support.

    Generating MSAs for AlphaFold2 and RoseTTAFold is a time-consuming task.

    “Generating MSAs for AlphaFold2 and RoseTTAFold is a time-consuming task.”
  • The paper relies on this without support.

    This type of search requires the database to be indexed and stored in memory.

    “This type of search requires the database to be indexed and stored in memory.”
  • The paper relies on this without support.

    AlphaFold2 requires more than 2 TB of storage space for its databases, which is a significant hurdle for many researchers.

    “AlphaFold2 requires more than 2 TB of storage space for its databases, which is a significant hurdle for many researchers.”
  • The paper relies on this without support.

    BFD is a clustered protein database consisting of ~2.2 billion proteins organized in 64 million clusters.

    “BFD is a clustered protein database consisting of ~2.2 billion proteins organized in 64 million clusters.”
  • The paper relies on this without support.

    MGnify (2019_05) contains ~300 million environmental proteins.

    “MGnify (2019_05) contains ~300 million environmental proteins.”
  • The paper relies on this without support.

    The benchmark datasets used (CASP14 targets, ClusPro targets and the M. jannaschii proteome) are representative of the protein structure prediction tasks ColabFold is intended for.

    “We show with multiple datasets that ColabFold does not sacrifice accuracy for its much faster run times.”
12 of 12

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • AlphaFold-Multimer predicts the SALL4 QID forms an alpha-helix with high confidence and assembles as a four-helical bundle.

    “The QID is predicted to form an alpha-helix with high confidence and all five models suggest higher order assembly as a four-helical bundle with almost perfect overlap (Figure 1F and Figure S2C,D).”

    From Tetramerisation governs SALL transcription factor function in development and disease (2025) · cites this paper as [37]

    The Methods section, “Modeling protein complexes with ColabFold” (page not available), describes using AlphaFold-Multimer to predict protein complexes. Searches for SALL4, QID, an alpha-helix, and a four-helical bundle found no passage reporting the specific prediction or the agreement among five models. (LLM, conf=0.76)

    Experimental — accuracy not yet measured
  • ColabFold and OpenFold let users run a modified AF2 protocol on open-access servers within minutes.

    “allow users to run a modified AF2 protocol on open access servers in minutes”
  • For targets without known homologs, increasing recycling iterations can improve prediction quality.

    “For targets without known homologs, such as computationally designed proteins, increasing the number of recycling iterations can improve the quality of the prediction8”
  • Enabling dropout layers in the neural network, normally used only during training, is another approach to increase conformational sampling.

    “Another approach is to enable dropout layers in the neural network, which are usually commonly used only during neural network training8,106,107.”
  • Contact predictions can be used to simultaneously fold and dock proteins, and AF2 can predict the structure of complexes.

    “it has been shown recently that contact predictions can be used to simultaneously fold and dock proteins17, and early reports have indicated that AF2 can predict the structure of complexes18–20, which it was not initially trained to handle.”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Reported pLDDT averages for the 50-protein sample disagree

    Minor

    The main text reports averages of 89.75 for AlphaFold2 and 88.78 for ColabFold Stop ≥ 85 in a sample of 50 proteins. The Methods section reports 90.68 and 89.33, respectively, for 50 randomly sampled proteins.

1 of 1

Cites

Flagged first, then by citations

3 of the 40 references couldn’t be matched to a known paper.

Research works printed but not linked: 5

  1. Evans, R. et al. bioRxiv 2021.10.04.463034 (2021).
  2. (2020), Nucleic Acids Res., 48, D570
  3. Delmont, T. O. et al. bioRxiv 2020.10.15.341214 (2020).
  4. Alexander, H. et al. bioRxiv 2021.07.25.453713 (2021).
  5. Mosalaganti, S. et al. bioRxiv 2021.10.26.465776 (2021).

Cited by

Sorted by citations

Authors
Mirdita, M., Schütze, K., Moriwaki, Y., Heo, L., Ovchinnikov, S., & Steinegger, M.
Affiliations
  • Max Planck Institute for Multidisciplinary Sciences (DE)
  • Seoul National University (KR)
  • Collaborative Research Institute for Innovative Microbiology, The University of Tokyo (JP)
  • Michigan State University (US)
  • Harvard University (US)
Corresponding author
  • Mirdita, Milot
  • Ovchinnikov, Sergey
  • Steinegger, Martin
Venue
Nature Methods
Publisher
openRxiv
Published
2021-08-15
Volume
19
Issue
6
Pages
679-682
ISSN
1548-7091 (ISSN-L)
OpenAlex
W4281790889
Cited by
9,391
References
40
Citations by year
2026: 1465 · 2025: 2293 · 2024: 2715 · 2023: 2017 · 2022: 817 · 2021: 75 · 2016: 1 · 2015: 1 · 2013: 2 · 2012: 2
FWCI
644.88
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Nature Methods (publishedVersion, cc-by)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • Research Square (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • GoeScholar The Publication Server of the Georg-August-Universität Göttingen (Georg-August-Universität Göttingen) (submittedVersion, cc-by)
  • Seoul National University Open Repository (Seoul National University) (submittedVersion)
Funders
  • National Science Foundation (2032259)
  • Japan Agency for Medical Research and Development (JP21am0101107)
  • National Research Foundation (2019R1A6A1A10073437)
  • Bundesministerium für Bildung und Forschung
  • Seoul National University
  • Georg-August-Universität Göttingen
  • National Research Foundation of Korea (2021-R1C1-C102065, 2019R1A6A1A10073437, 2020M3A9G7103933, 2021R1C1C102065, 2021M3A9I4021220, 2021-M3A9-I4021220, 2020M3‐A9G7‐103933, 2019R1-A6A1-A10073437)
  • Max-Planck-Gesellschaft
  • National Institutes of Health (DP5OD026389)
  • National Institute of Allergy and Infectious Diseases (R21AI156595)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Machine Learning in Bioinformatics
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
protein structure prediction, protein complex prediction, homology search, MMseqs2, AlphaFold2, RoseTTAFold, Google Colaboratory, GPU acceleration, open source software, environmental databases, ColabFold
MeSH terms
Computers, Proteins, Software, Databases, Factual, Protein Folding

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Claims read by deepseek-v4.1-flash under definition version 3 (extract-v3) on 2026-10-10.

Classified by jev-1.13-20260917 (gold-guideline-v0.2) on 2026-10-10.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review