Evidence map›Paper›PMID 30085303›Full record

ArticleMolecular biology and evolution2018

Biophysical Inference of Epistasis and the Effects of Mutations on Protein Stability and Function.

Jakub Otwinowski

Abstract read
In one paragraph

Article in Molecular biology and evolution, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

56 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. PoolParty: streamlined design of DNA sequence libraries in Python.bioRxiv : the preprint server for biology · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Epistatic drift in protein evolution.Current opinion in genetics & development · 2025
    Review
  12. Distinguishing direct interactions from global epistasis using rank statistics.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  13. Review
  14. Article
  15. Article
  16. Gauge fixing for sequence-function relationships.PLoS computational biology · 2025
    Article
  17. Article
  18. The origin of mutational epistasis.European biophysics journal : EBJ · 2024
    Article
  19. Article
  20. Emergent time scales of epistasis in protein evolution.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

1 author.

Jakub OtwinowskiBiology Department, University of Pennsylvania, Philadelphia, PA.

Funding

Training in Emerging Infectious DiseasesT32AI055400 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI CHERRY, SARA, HENSLEY, SCOTT ERIC · 2003 to 2022
$4.4M
NIAID NIH HHS T32 AI055400
6 · The paper itself

Abstract

Understanding the relationship between protein sequence, function, and stability is a fundamental problem in biology. The essential function of many proteins that fold into a specific structure is their ability to bind to a ligand, which can be assayed for thousands of mutated variants. However, binding assays do not distinguish whether mutations affect the stability of the binding interface or the overall fold. Here, we introduce a statistical method to infer a detailed energy landscape of how a protein folds and binds to a ligand by combining information from many mutated variants. We fit a thermodynamic model describing the bound, unbound, and unfolded states to high quality data of protein G domain B1 binding to IgG-Fc. We infer distinct folding and binding energies for each mutation providing a detailed view of how mutations affect binding and stability across the protein. We accurately infer the folding energy of each variant in physical units, validated by independent data, whereas previous high-throughput methods could only measure indirect changes in stability. While we assume an additive sequence-energy relationship, the binding fraction is epistatic due its nonlinear relation to energy. Despite having no epistasis in energy, our model explains much of the observed epistasis in binding fraction, with the remaining epistasis identifying conformationally dynamic regions.

Indexed as

Protein StabilityAmino Acid SequenceAnimalsComputer SimulationEpistasis, GeneticEvolution, MolecularHumansLigandsMutationProtein ConformationProtein FoldingProteinsStructure-Activity RelationshipThermodynamicsLigandsProteins

Identifiers

PMID30085303
PMCPMC6188545

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.