Cited by 60Protein Structure and DynamicsComputational Drug Discovery MethodsCell death mechanisms and regulation

Hydrophobic Binding Hot Spots of Bcl-xL Protein−Protein Interfaces by Cosolvent Molecular Dynamics Simulation

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Yang, Chao-Yie, Wang, Shaomeng·2011·ACS Medicinal Chemistry Letters

Abstract

Identifying binding hot spots in protein-protein interfaces is important for understanding the binding specificity and for the design of nonpeptide, small molecule inhibitors. Molecular dynamics simulation in the isopropanol/water cosolvent environment and in water was employed to investigate Bcl-xL protein, which has a highly flexible, large, and primarily hydrophobic binding site. Simulations of either the apo- or holocrystal structures of the Bcl-xL in pure water fail to generate conformations found in the cocrystal structures of Bcl-xL in complex with its binding partners due to hydrophobic collapse. In contrast, simulations in cosolvent starting either from the apo- or holocrystal structure of the Bcl-xL yield binding-site conformations similar to that found in the cocrystal structures of Bcl-xL. Hydrophobic binding hot spots identified using the conformations from the cosolvent simulations are in excellent agreement with experimental structural data of known inhibitors. Importantly, cosolvent simulations revealed the highly dynamic nature of the hydrophobic binding pockets in Bcl-xL and yielded new structural insights for the design of novel Bcl-xL small-molecule inhibitors.

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Authors
Yang, C.-Y., & Wang, S.
Affiliations
University of Michigan (US)
Corresponding author
Wang, Shaomeng
Venue
ACS Medicinal Chemistry Letters
Published
2011-01-13
Volume
2
Issue
4
Pages
280-284
ISSN
1948-5875 (ISSN-L)
OpenAlex
W2002643392
Cited by
57
References
25
Citations by year
2024: 4 · 2022: 3 · 2021: 2 · 2020: 4 · 2019: 3 · 2018: 6 · 2017: 5 · 2016: 6 · 2015: 12 · 2014: 3 · 2013: 3 · 2012: 6
FWCI
1.56
Type
journal article
Language
en
Open access
Locations
  • ACS Medicinal Chemistry Letters (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (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 › Cell death mechanisms and regulation
Keywords
Bcl-xL, protein-protein interfaces, hydrophobic collapse, binding site conformation, small molecule inhibitors, apoptosis inhibitor, protein flexibility

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