Evidence map›Paper›PMID 23610431›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2013

Different 3D domain-swapped oligomeric cyanovirin-N structures suggest trapped folding intermediates.

Leonardus M I Koharudin, Lin Liu, Angela M Gronenborn

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

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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

11 citing papers in PubMed.

  1. Understanding domain swapping in the c-Src SH3 domain through hinge-loop mutagenesis.Acta crystallographica. Section D, Structural biology · 2025
    Article
  2. Article
  3. Protein folding: Funnel model revised.Computational and structural biotechnology journal · 2024
    Article
  4. Article
  5. Fluid protein fold space and its implications.BioEssays : news and reviews in molecular, cellular and developmental biology · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Review
  11. 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

3 authors.

Leonardus M I KoharudinDepartment of Structural Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15260, USA.
Lin Liu
Angela M Gronenborn

Funding

Structures, carbohydrate binding and anti-viral activity of CVNH and OAAH familyR01GM080642 · NIGMS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GRONENBORN, ANGELA M. · 2007 to 2015
$2.7M
NIGMS NIH HHS GM080642NIGMS NIH HHS R01 GM080642
6 · The paper itself

Abstract

Although it has long been established that the amino acid sequence encodes the fold of a protein, how individual proteins arrive at their final conformation is still difficult to predict, especially for oligomeric structures. Here, we present a comprehensive characterization of oligomeric species of cyanovirin-N that all are formed by a polypeptide chain with the identical amino acid sequence. Structures of the oligomers were determined by X-ray crystallography, and each one exhibits 3D domain swapping. One unique 3D domain-swapped structure is observed for the trimer, while for both dimer and tetramer, two different 3D domain-swapped structures were obtained. In addition to the previously identified hinge-loop region of the 3D domain-swapped dimer, which resides between strands β5 and β6 in the middle of the polypeptide sequence, another hinge-loop region is observed between strands β7 and β8 in the structures. Plasticity in these two regions allows for variability in dihedral angles and concomitant differences in chain conformation that results in the differently 3D domain-swapped multimers. Based on all of the different structures, we propose possible folding pathways for this protein. Altogether, our results illuminate the amazing ability of cyanovirin-N to proceed down different folding paths and provide general insights into oligomer formation via 3D domain swapping.

Indexed as

Protein FoldingBacterial ProteinsCarrier ProteinsCrystallography, X-RayDimerizationMagnetic Resonance SpectroscopyModels, MolecularMolecular ConformationNostocProteinsProtein Structure, TertiaryX-Ray DiffractionBacterial ProteinsCarrier Proteinscyanovirin NProteinsCV-NNMR spectroscopyprotein foldingX-ray structures

Identifiers

PMID23610431
PMCPMC3651430

What OpenQuestion holds

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Registered trials

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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.