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Updated: Mar 17, 2026

Examining BCL-2 Family Function with Large Unilamellar Vesicles
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Published on: October 5, 2012

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A Review on Structures and Functions of Bcl-2 Family Proteins from Homo sapiens

Dakshinamurthy Sivakumar, Thirunavukkarasu Sivaraman1

  • 1Structural Biology Lab, Department of Bioinformatics, School of Chemical and Biotechnology, SASTRA University, Thanjavur - 613401, Tamil Nadu, India. sivaram@scbt.sastra.edu.

Protein and Peptide Letters
|July 25, 2016
PubMed

Insights

This review details the 3D structures of human Bcl-2 family proteins and their inhibitors. Understanding these structures aids in developing new cancer therapies targeting apoptosis regulation.

Area of Science:

  • Biochemistry
  • Structural Biology
  • Molecular Biology

Background:

  • Cancer cells often evade apoptosis, a programmed cell death process crucial for development and homeostasis.
  • The intrinsic apoptosis pathway is primarily regulated by proteins belonging to the Bcl-2 family.
  • Dysregulation of Bcl-2 family proteins contributes to cancer development and resistance to therapy.

Purpose of the Study:

  • To comprehensively list and describe the experimentally determined 3D structures of Homo sapiens Bcl-2 family proteins.
  • To detail the complex structures of anti-apoptotic proteins bound with small molecular inhibitors.
  • To discuss the molecular mechanisms of Bcl-2 family proteins in apoptosis and strategies for antagonist design.

Main Methods:

  • Literature review of experimentally determined 3D structures.
  • Analysis of protein Data Bank (PDB) entries for Bcl-2 family proteins and their complexes.
  • Description and categorization of structural data.

Main Results:

  • A comprehensive catalog of 3D structures for human Bcl-2 family proteins is presented.
  • Structures of anti-apoptotic Bcl-2 proteins complexed with various small molecule inhibitors are detailed.
  • Key structural features influencing protein-protein interactions and inhibitor binding are highlighted.

Conclusions:

  • Structural insights into Bcl-2 family proteins are vital for understanding apoptosis regulation in cancer.
  • The presented structural data provides a foundation for designing novel small molecule inhibitors targeting anti-apoptotic proteins.
  • Targeting Bcl-2 family proteins represents a promising therapeutic strategy for overcoming cancer cell survival.

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