Evidence map›Paper›PMID 22342886›Full record

ArticleJournal of molecular biology2012

Enthalpy-entropy compensation and cooperativity as thermodynamic epiphenomena of structural flexibility in ligand-receptor interactions.

Andrea Ferrante, Jack Gorski

Open access · greenAbstract read
In one paragraph

Article in Journal of molecular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
5.9field-weighted citation impact, top 3% 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

21 citing papers in PubMed, 51 citations in OpenAlex.

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  8. Role of potassium levels in pkBADH heterogeneity of NADJournal of bioenergetics and biomembranes · 2020
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  11. Enhanced potency of bivalent small molecule gp41 inhibitors.Bioorganic & medicinal chemistry · 2017
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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.

Andrea FerranteBlood Research Institute, BloodCenter of Wisconsin, P.O. Box 2178, Milwaukee, WI 53201, USA. andrea.ferrante@bcw.edu
Jack Gorski
Versiti Blood Center of Wisconsin · US

Funding

Epitope selection by HLA-DRR01AI063016 · NIAID · VERSITI WISCONSIN, INC. · PI GORSKI, JACK A · 2005 to 2009
$1.5M
NIAID NIH HHS R01 AI063016NIAID NIH HHS R01AI63016
6 · The paper itself

Abstract

Ligand binding is a thermodynamically cooperative process in many biochemical systems characterized by the conformational flexibility of the reactants. However, the contribution of conformational entropy to cooperativity of ligation needs to be elucidated. Here, we perform kinetic and thermodynamic analyses on a panel of cycle-mutated peptides, derived from influenza H3 HA(306-319), interacting with wild type and a mutant HLA-DR. We observe that, within a certain range of peptide affinity, this system shows isothermal entropy-enthalpy compensation (iEEC). The incremental increases in conformational entropy measured as disruptive mutations are added in the ligand or receptor are more than sufficient in magnitude to account for the experimentally observed lack of free-energy decrease cooperativity. Beyond this affinity range, compensation is not observed, and therefore, the ability of the residual interactions to form a stable complex decreases in an exponential fashion. Taken together, our results indicate that cooperativity and iEEC constitute the thermodynamic epiphenomena of the structural fluctuation that accompanies ligand-receptor complex formation in flexible systems. Therefore, ligand binding affinity prediction needs to consider how each source of binding energy contributes synergistically to the folding and kinetic stability of the complex in a process based on the trade-off between structural tightening and restraint of conformational mobility.

Indexed as

Protein ConformationThermodynamicsHemagglutinin Glycoproteins, Influenza VirusHLA-DR AntigensKineticsLigandsMutant ProteinsProtein BindingHemagglutinin Glycoproteins, Influenza VirusHLA-DR AntigensLigandsMutant Proteins

Identifiers

PMID22342886
PMCPMC3349339
OpenAlexW2056213804

What OpenQuestion holds

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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.