Evidence map›Paper›PMID 22712830›Full record

ArticleACS chemical biology2012

Extreme entropy-enthalpy compensation in a drug-resistant variant of HIV-1 protease.

Nancy M King, Moses Prabu-Jeyabalan, Rajintha M Bandaranayake, Madhavi N L Nalam, Ellen A Nalivaika, Ayşegül Özen, Türkan Haliloğlu, Neşe Kurt Yilmaz, Celia A Schiffer

Abstract read
In one paragraph

Article in ACS chemical biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing 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

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

35 citing papers in PubMed.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Enthalpic Classification of Water Molecules in Target-Ligand Binding.Journal of chemical information and modeling · 2024
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Hydration Structure and Dynamics of Inhibitor-Bound HIV-1 Protease.Journal of chemical theory and computation · 2018
    Article
  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

9 authors.

Nancy M KingDepartment of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, 364 Plantation Street, Worcester, MA 01605, USA.
Moses Prabu-Jeyabalan
Rajintha M Bandaranayake
Madhavi N L Nalam
Ellen A Nalivaika
Ayşegül Özen
Türkan Haliloğlu
Neşe Kurt Yilmaz
Celia A Schiffer

Funding

Targeting ensembles of Drug Resistant HIV ProteasesP01GM066524 · NIGMS · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI SCHIFFER, CELIA A. · 2002 to 2011
$16.3M
NIGMS NIH HHS P01 GM066524NIGMS NIH HHS P01-GM66524
6 · The paper itself

Abstract

The development of HIV-1 protease inhibitors has been the historic paradigm of rational structure-based drug design, where structural and thermodynamic analyses have assisted in the discovery of novel inhibitors. While the total enthalpy and entropy change upon binding determine the affinity, often the thermodynamics are considered in terms of inhibitor properties only. In the current study, profound changes are observed in the binding thermodynamics of a drug-resistant variant compared to wild-type HIV-1 protease, irrespective of the inhibitor bound. This variant (Flap+) has a combination of flap and active site mutations and exhibits extremely large entropy-enthalpy compensation compared to wild-type protease, 5-15 kcal/mol, while losing only 1-3 kcal/mol in total binding free energy for any of six FDA-approved inhibitors. Although entropy-enthalpy compensation has been previously observed for a variety of systems, never have changes of this magnitude been reported. The co-crystal structures of Flap+ protease with four of the inhibitors were determined and compared with complexes of both the wild-type protease and another drug-resistant variant that does not exhibit this energetic compensation. Structural changes conserved across the Flap+ complexes, which are more pronounced for the flaps covering the active site, likely contribute to the thermodynamic compensation. The finding that drug-resistant mutations can profoundly modulate the relative thermodynamic properties of a therapeutic target independent of the inhibitor presents a new challenge for rational drug design.

Indexed as

Drug Resistance, ViralCatalytic DomainCrystallography, X-RayEntropyHIV-1HIV ProteaseHIV Protease InhibitorsModels, MolecularMutationProtein BindingThermodynamicsHIV ProteaseHIV Protease Inhibitorsp16 protease, Human immunodeficiency virus 1

Identifiers

PMID22712830
PMCPMC3594831

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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.