Evidence map›Paper›PMID 22927390›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

Chemical synthesis and X-ray structure of a heterochiral {D-protein antagonist plus vascular endothelial growth factor} protein complex by racemic crystallography.

Kalyaneswar Mandal, Maruti Uppalapati, Dana Ault-Riché, John Kenney, Joshua Lowitz, Sachdev S Sidhu, Stephen B H Kent

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
5.1field-weighted citation impact, top 4% 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

52 citing papers in PubMed, 143 citations in OpenAlex.

  1. Article
  2. Review
  3. Protein Structure Determination by Racemic and Quasi-Racemic X-Ray Crystallography.Chembiochem : a European journal of chemical biology · 2026
    Review
  4. Article
  5. Article
  6. Article
  7. Review
  8. Functional Ambidexterity of an Ancient Nucleic Acid-Binding Domain.Angewandte Chemie (International ed. in English) · 2025
    Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. D-Peptide and D-Protein Technology: Recent Advances, Challenges, and Opportunities.Chembiochem : a European journal of chemical biology · 2023
    Review
  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

7 authors at 3 institutions in 2 countries.

Kalyaneswar MandalDepartment of Chemistry, Institute for Biophysical Dynamics, University of Chicago, Chicago, IL 60637, USA.
Maruti Uppalapati
Dana Ault-Riché
John Kenney
Joshua Lowitz
Sachdev S Sidhu
Stephen B H Kent
University of Chicago · USUniversity of Toronto · CARefleXion Medical (United States) · US

Funding

Y-FAMILY POLYMERASES AND CO-FACTORS IN TRANSLESION REPLICATIONP41RR015301 · NCRR · CORNELL UNIVERSITY ITHACA · PI EISENBERG, DAVID · 2001 to 2011
$28.2M
NCRR NIH HHS P41 RR015301NCRR NIH HHS RR-15301
6 · The paper itself

Abstract

Total chemical synthesis was used to prepare the mirror image (D-protein) form of the angiogenic protein vascular endothelial growth factor (VEGF-A). Phage display against D-VEGF-A was used to screen designed libraries based on a unique small protein scaffold in order to identify a high affinity ligand. Chemically synthesized D- and L- forms of the protein ligand showed reciprocal chiral specificity in surface plasmon resonance binding experiments: The L-protein ligand bound only to D-VEGF-A, whereas the D-protein ligand bound only to L-VEGF-A. The D-protein ligand, but not the L-protein ligand, inhibited the binding of natural VEGF(165) to the VEGFR1 receptor. Racemic protein crystallography was used to determine the high resolution X-ray structure of the heterochiral complex consisting of {D-protein antagonist + L-protein form of VEGF-A}. Crystallization of a racemic mixture of these synthetic proteins in appropriate stoichiometry gave a racemic protein complex of more than 73 kDa containing six synthetic protein molecules. The structure of the complex was determined to a resolution of 1.6 Å. Detailed analysis of the interaction between the D-protein antagonist and the VEGF-A protein molecule showed that the binding interface comprised a contact surface area of approximately 800 Å(2) in accord with our design objectives, and that the D-protein antagonist binds to the same region of VEGF-A that interacts with VEGFR1-domain 2.

Indexed as

Models, MolecularAmino Acid SequenceBacterial ProteinsChromatography, High Pressure LiquidCircular DichroismCrystallography, X-RayEnzyme-Linked Immunosorbent AssayEpitope MappingLigandsMass SpectrometryMolecular Sequence DataMultiprotein ComplexesOpen Reading FramesStereoisomerismSurface Plasmon ResonanceVascular Endothelial Growth Factor ABacterial ProteinsIgG Fc-binding protein, StreptococcusLigandsMultiprotein ComplexesVascular Endothelial Growth Factor A

Identifiers

PMID22927390
PMCPMC3443191
OpenAlexW2010897967

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.