Evidence map›Paper›PMID 25986934›Full record

ArticleMethods (San Diego, Calif.)2015

Protein structure prediction guided by crosslinking restraints--A systematic evaluation of the impact of the crosslinking spacer length.

Tommy Hofmann, Axel W Fischer, Jens Meiler, Stefan Kalkhof

Abstract read
In one paragraph

Article in Methods (San Diego, Calif.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing 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

28 citing papers in PubMed.

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  16. Review
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  19. Novel Concepts of MS-Cleavable Cross-linkers for Improved Peptide Structure Analysis.Journal of the American Society for Mass Spectrometry · 2017
    Article
  20. 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

4 authors.

Tommy HofmannDepartment of Proteomics, Helmholtz-Centre for Environmental Research - UFZ, Leipzig D-04318, Germany.
Axel W FischerDepartment of Chemistry and Center for Structural Biology, Vanderbilt University, Nashville, TN 37232, USA.
Jens MeilerDepartment of Chemistry and Center for Structural Biology, Vanderbilt University, Nashville, TN 37232, USA. Electronic address: jens@meilerlab.org.
Stefan KalkhofDepartment of Proteomics, Helmholtz-Centre for Environmental Research - UFZ, Leipzig D-04318, Germany; Department of Bioanalytics, University of Applied Sciences and Arts of Coburg, D-96450 Coburg, Germany. Electronic address: stefan.kalkhof@ufz.de.

Funding

Membrane Protein Structure Elucidation from sparse NMR data (KAMP)R01GM080403 · NIGMS · VANDERBILT UNIVERSITY · PI MEILER, JENS · 2007 to 2019
$3.0M
Computational Design of Protein-Ligand Interfaces - a Therapeutic StrategyR01GM099842 · NIGMS · VANDERBILT UNIVERSITY · PI MEILER, JENS · 2012 to 2015
$1.3M
Small Molecule Probes to Investigate Structure and Function of Y ReceptorsR01DK097376 · NIDDK · VANDERBILT UNIVERSITY · PI MEILER, JENS, WEAVER, C DAVID · 2013 to 2015
$1.0M
NIDDK NIH HHS R01 DK097376NIGMS NIH HHS R01 GM080403NIGMS NIH HHS R01 GM099842
6 · The paper itself

Abstract

Recent development of high-resolution mass spectrometry (MS) instruments enables chemical crosslinking (XL) to become a high-throughput method for obtaining structural information about proteins. Restraints derived from XL-MS experiments have been used successfully for structure refinement and protein-protein docking. However, one formidable question is under which circumstances XL-MS data might be sufficient to determine a protein's tertiary structure de novo? Answering this question will not only include understanding the impact of XL-MS data on sampling and scoring within a de novo protein structure prediction algorithm, it must also determine an optimal crosslinker type and length for protein structure determination. While a longer crosslinker will yield more restraints, the value of each restraint for protein structure prediction decreases as the restraint is consistent with a larger conformational space. In this study, the number of crosslinks and their discriminative power was systematically analyzed in silico on a set of 2055 non-redundant protein folds considering Lys-Lys, Lys-Asp, Lys-Glu, Cys-Cys, and Arg-Arg reactive crosslinkers between 1 and 60Å. Depending on the protein size a heuristic was developed that determines the optimal crosslinker length. Next, simulated restraints of variable length were used to de novo predict the tertiary structure of fifteen proteins using the BCL::Fold algorithm. The results demonstrate that a distinct crosslinker length exists for which information content for de novo protein structure prediction is maximized. The sampling accuracy improves on average by 1.0 Å and up to 2.2 Å in the most prominent example. XL-MS restraints enable consistently an improved selection of native-like models with an average enrichment of 2.1.

Indexed as

Protein ConformationProtein FoldingAnimalsChromatography, LiquidCross-Linking ReagentsForecastingHorsesProteinsTandem Mass SpectrometryCross-Linking ReagentsProteinsCrosslinkingDe novo foldingMass spectrometryProtein modelingProtein structure prediction

Identifiers

PMID25986934
PMCPMC4803439

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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.