Evidence map›Paper›PMID 26371375›Full record

ArticleThe Biochemical journal2015

Solution NMR characterization of chemokine CXCL8/IL-8 monomer and dimer binding to glycosaminoglycans: structural plasticity mediates differential binding interactions.

Prem Raj B Joseph, Philip D Mosier, Umesh R Desai, Krishna Rajarathnam

Open access · bronzeAbstract read
In one paragraph

Article in The Biochemical journal, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed, 1 pooled it
5.5field-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

64 citing papers in PubMed, 1 synthesis or guideline pooled it, 106 citations in OpenAlex.

  1. Pooled it
  2. SpyCEP dismantles neutrophil immunity via disorder-driven chemokine remodeling and GAG targeting.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Review
  12. NMR Methods for Characterization of Glycosaminoglycan-Chemokine Interactions.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. 3-Computational and structural biotechnology journal · 2022
    Article
  17. Modeling Protein-Glycosaminoglycan Complexes: Does the Size Matter?Journal of chemical information and modeling · 2021
    Article
  18. Article
  19. Latest update on chemokine receptors as therapeutic targets.Biochemical Society transactions · 2021
    Review
  20. Review

4 more citing papers are in PubMed but not listed here.

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 at 2 institutions in 1 country.

Prem Raj B JosephDepartment of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX 77555, U.S.A. Sealy Center for Structural Biology and Molecular Biophysics, The University of Texas Medical Branch, Galveston, TX 77555, U.S.A. Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA 23219, U.S.A.
Philip D MosierDepartment of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA 23219, U.S.A. Institute for Structural Biology, Drug Discovery and Development, Virginia Commonwealth University, Richmond, VA 23219, U.S.A.
Umesh R DesaiDepartment of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA 23219, U.S.A.
Krishna RajarathnamDepartment of Biochemistry and Molecular Biology, The University of Texas Medical Branch, Galveston, TX 77555, U.S.A. Sealy Center for Structural Biology and Molecular Biophysics, The University of Texas Medical Branch, Galveston, TX 77555, U.S.A. krrajara@utmb.edu.
Virginia Commonwealth University · USThe University of Texas Medical Branch at Galveston · US

Funding

Therapeutic assessment of synthetic heparin sulfates in transplantation modelsP01HL107152 · NHLBI · VIRGINIA COMMONWEALTH UNIVERSITY · PI DESAI, UMESH RAMANLAL · 2011 to 2017
$15.8M
High Performance Computing Cluster for Biomedical Research at VCUS10RR027411 · NCRR · VIRGINIA COMMONWEALTH UNIVERSITY · PI CUI, MENG · 2010 to 2010
$417k
NCRR NIH HHS S10RR027411NHLBI NIH HHS P01HL107152
6 · The paper itself

Abstract

Chemokine CXCL8/interleukin-8 (IL-8) plays a crucial role in directing neutrophils and oligodendrocytes to combat infection/injury and tumour cells in metastasis development. CXCL8 exists as monomers and dimers and interaction of both forms with glycosaminoglycans (GAGs) mediate these diverse cellular processes. However, very little is known regarding the structural basis underlying CXCL8-GAG interactions. There are conflicting reports on the affinities, geometry and whether the monomer or dimer is the high-affinity GAG ligand. To resolve these issues, we characterized the binding of a series of heparin-derived oligosaccharides [heparin disaccharide (dp2), heparin tetrasaccharide (dp4), heparin octasaccharide (dp8) and heparin 14-mer (dp14)] to the wild-type (WT) dimer and a designed monomer using solution NMR spectroscopy. The pattern and extent of binding-induced chemical shift perturbation (CSP) varied between dimer and monomer and between longer and shorter oligosaccharides. NMR-based structural models show that different interaction modes coexist and that the nature of interactions varied between monomer and dimer and oligosaccharide length. MD simulations indicate that the binding interface is structurally plastic and provided residue-specific details of the dynamic nature of the binding interface. Binding studies carried out under conditions at which WT CXCL8 exists as monomers and dimers provide unambiguous evidence that the dimer is the high-affinity GAG ligand. Together, our data indicate that a set of core residues function as the major recognition/binding site, a set of peripheral residues define the various binding geometries and that the structural plasticity of the binding interface allows multiplicity of binding interactions. We conclude that structural plasticity most probably regulates in vivo CXCL8 monomer/dimer-GAG interactions and function.

Indexed as

Protein MultimerizationAmino Acid SequenceBinding SitesGlycosaminoglycansHeparinHumansInterleukin-8KineticsMagnetic Resonance SpectroscopyMolecular Docking SimulationMolecular Dynamics SimulationMolecular Sequence DataOligosaccharidesProtein BindingProtein Structure, TertiarySequence Homology, Amino AcidCXCL8 protein, humanGlycosaminoglycansHeparinInterleukin-8OligosaccharidesSolutionschemokineglycosaminoglycan (GAG)heparinnuclear magnetic resonance (NMR)structural plasticitystructure–function study

Identifiers

PMID26371375
PMCPMC4692082
OpenAlexW2173247062

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.