Evidence map›Paper›PMID 15014227›Full record

ArticleJournal of biomolecular NMR2004

An expectation/maximization nuclear vector replacement algorithm for automated NMR resonance assignments.

Christopher James Langmead, Bruce Randall Donald

Abstract read
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In one paragraph

Article in Journal of biomolecular NMR, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
1.9field-weighted citation impact, top 15% of its field
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

18 citing papers in PubMed, 65 citations in OpenAlex.

  1. Article
  2. Article
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  4. A Bayesian approach for determining protein side-chain rotamer conformations using unassigned NOE data.Journal of computational biology : a journal of computational molecular cell biology · 2011
    Article
  5. Article
  6. Article
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  9. Structure-oriented methods for protein NMR data analysis.Progress in nuclear magnetic resonance spectroscopy · 2010
    Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Contact replacement for NMR resonance assignment.Bioinformatics (Oxford, England) · 2008
    Article
  17. Article
  18. 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

2 authors at 1 institution in 1 country.

Christopher James LangmeadDartmouth Computer Science Department, Hanover, NH 03755, USA.
Bruce Randall Donald
Dartmouth College · US

Funding

Automated NMR Assignment and Protein Structure DeterminationR01GM065982 · NIGMS · DUKE UNIVERSITY · PI DONALD, BRUCE R. · 2002 to 2011
$2.7M
NIGMS NIH HHS GM-65982
6 · The paper itself

Abstract

We report an automated procedure for high-throughput NMR resonance assignment for a protein of known structure, or of an homologous structure. Our algorithm performs Nuclear Vector Replacement (NVR) by Expectation/Maximization (EM) to compute assignments. NVR correlates experimentally-measured NH residual dipolar couplings (RDCs) and chemical shifts to a given a priori whole-protein 3D structural model. The algorithm requires only uniform (15)N-labelling of the protein, and processes unassigned H(N)-(15)N HSQC spectra, H(N)-(15)N RDCs, and sparse H(N)-H(N) NOE's (d(NN)s). NVR runs in minutes and efficiently assigns the (H(N),(15)N) backbone resonances as well as the sparse d(NN)s from the 3D (15)N-NOESY spectrum, in O (n(3)) time. The algorithm is demonstrated on NMR data from a 76-residue protein, human ubiquitin, matched to four structures, including one mutant (homolog), determined either by X-ray crystallography or by different NMR experiments (without RDCs). NVR achieves an average assignment accuracy of over 99%. We further demonstrate the feasibility of our algorithm for different and larger proteins, using different combinations of real and simulated NMR data for hen lysozyme (129 residues) and streptococcal protein G (56 residues), matched to a variety of 3D structural models.

Indexed as

AlgorithmsComputer SimulationAnimalsCarbon IsotopesCrystallography, X-RayHumansMagnetic Resonance SpectroscopyMolecular StructureMuramidaseNitrogen IsotopesUbiquitinCarbon IsotopesMuramidaseNitrogen IsotopesUbiquitin

Identifiers

PMID15014227
OpenAlexW2135307619

What OpenQuestion holds

Textmetadata
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.