Cited by 4,599Enzyme Structure and FunctionProtein Structure and DynamicsCrystal structures of chemical compounds

MolProbity: More and better reference data for improved all‐atom structure validation

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Williams, Christopher J., Headd, Jeffrey J., Moriarty, Nigel W., Prisant, Michael G., Videau, Lizbeth L., Deis, Lindsay N., Verma, Vishal, Keedy, Daniel A. +10 more·2018·Protein Science

Abstract

This paper describes the current update on macromolecular model validation services that are provided at the MolProbity website, emphasizing changes and additions since the previous review in 2010. There have been many infrastructure improvements, including rewrite of previous Java utilities to now use existing or newly written Python utilities in the open‐source CCTBX portion of the Phenix software system. This improves long‐term maintainability and enhances the thorough integration of MolProbity‐style validation within Phenix. There is now a complete MolProbity mirror site at http://molprobity.manchester.ac.uk . GitHub serves our open‐source code, reference datasets, and the resulting multi‐dimensional distributions that define most validation criteria. Coordinate output after Asn/Gln/His “flip” correction is now more idealized, since the post‐refinement step has apparently often been skipped in the past. Two distinct sets of heavy‐atom‐to‐hydrogen distances and accompanying van der Waals radii have been researched and improved in accuracy, one for the electron‐cloud‐center positions suitable for X‐ray crystallography and one for nuclear positions. New validations include messages at input about problem‐causing format irregularities, updates of Ramachandran and rotamer criteria from the million quality‐filtered residues in a new reference dataset, the CaBLAM Cα‐CO virtual‐angle analysis of backbone and secondary structure for cryoEM or low‐resolution X‐ray, and flagging of the very rare cis ‐nonProline and twisted peptides which have recently been greatly overused. Due to wide application of MolProbity validation and corrections by the research community, in Phenix, and at the worldwide Protein Data Bank, newly deposited structures have continued to improve greatly as measured by MolProbity's unique all‐atom clashscore.

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Crossref · 10.1002/pro.3330

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Authors
Williams, C. J., Headd, J. J., Moriarty, N. W., Prisant, M. G., Videau, L. L., Deis, L. N., Verma, V., Keedy, D. A., Hintze, B. J., Chen, V. B., Jain, S., Lewis, S. M., Arendall, W. B., Snoeyink, J., Adams, P. D., Lovell, S. C., Richardson, J. S., & Richardson, D. C.
Affiliations
  • Duke University (US)
  • Lawrence Berkeley National Laboratory (US)
  • University of North Carolina at Chapel Hill (US)
  • University of Manchester (GB)
Corresponding author
Richardson, David C.
Venue
Protein Science
Publisher
Wiley
Published
2017-11-27
Volume
27
Issue
1
Pages
293-315
ISSN
  • 0961-8368 (ISSN-L)
  • 1469-896X
OpenAlex
W2765322245
Cited by
4,599
References
66
Citations by year
2026: 673 · 2025: 822 · 2024: 747 · 2023: 667 · 2022: 682 · 2021: 491 · 2020: 348 · 2019: 133 · 2018: 35
FWCI
60.36
Type
journal article
Language
en
Open access
Locations
  • Protein Science (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
  • Research Explorer (The University of Manchester) (submittedVersion)
Funders
National Institutes of Health (R01‐GM073919, P01‐GM063210, R01‐GM088674, R01‐GM073930)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Chemistry › Inorganic Chemistry › Crystal structures of chemical compounds
Keywords
MolProbity, PHENIX, reference dataset, van der Waals radii, protein crystallography, cryo-EM structure
MeSH terms
Models, Molecular, Programming Languages, Proteins, Databases, Protein

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