Cited by 33Protein Structure and DynamicsComputational Drug Discovery MethodsProtein Interaction Studies and Fluorescence Analysis

Protein Hot Spots: The Islands of Stability

Kuttner, Yosef Y., Engel, Stanislav·2012·Journal of Molecular Biology

Abstract

Understanding the structural basis of protein-protein interactions (PPIs) may shed light on the organization and functioning of signal transduction and metabolic networks and may assist in structure-based design of ligands (drugs) targeting protein-protein interfaces. The residues at the bimolecular interface, designated as the hot spots, contribute most of the free binding energy of PPI. To date, there is no conclusive atomistic explanation for the unique functional properties of the hot spots. We hypothesized that backbone compliance may play a role in protein-protein recognition and in the mechanism of binding of small-molecule compounds to protein surfaces. We used a steered molecular dynamics simulation to explore the compliance properties of the backbone of surface-exposed residues in several model proteins: interleukin-2, mouse double minute protein 2 and proliferating cell nuclear antigen. We demonstrated that protein surfaces exhibit distinct patterns in which highly immobile residues form defined clusters ("stability patches") alternating with areas of moderate to high mobility. These "stability patches" tend to localize in functionally important regions involved in protein-protein recognition. We propose a mechanism by which the distinct structural organization of the hot spots may contribute to their role in mediating PPI and facilitating binding of structurally diverse small-molecule compounds to protein surfaces.

Integrity signals

Registry

Crossref · 10.1016/j.jmb.2011.11.009

Cites

31 of 31 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Cites

Flagged first, then by citations

1 of the 32 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Kuttner, Y. Y., & Engel, S.
Affiliations
Ben-Gurion University of the Negev (IL)
Corresponding author
Engel, Stanislav
Venue
Journal of Molecular Biology
Publisher
Elsevier BV
Published
2012-01
Volume
415
Issue
2
Pages
419-428
ISSN
0022-2836 (ISSN-L)
OpenAlex
W2030813074
Cited by
32
References
32
Citations by year
2025: 2 · 2024: 1 · 2023: 2 · 2022: 2 · 2021: 1 · 2019: 3 · 2017: 4 · 2016: 5 · 2015: 4 · 2014: 2 · 2013: 5 · 2012: 1
FWCI
1.04
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Molecular Biology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
  • Physical Sciences › Computer Science › Computational Theory and Mathematics › Computational Drug Discovery Methods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Interaction Studies and Fluorescence Analysis
Keywords
protein-protein interaction, protein-protein recognition, interleukin-2, MDM2, proliferating cell nuclear antigen, steered molecular dynamics
MeSH terms
Animals, Humans, Interleukin-2, Models, Molecular, Protein Binding, Protein Conformation, Proliferating Cell Nuclear Antigen, Mice, Proto-Oncogene Proteins c-mdm2, Protein Interaction Domains and Motifs, Molecular Dynamics Simulation

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review