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Updated: May 12, 2026

Examining BCL-2 Family Function with Large Unilamellar Vesicles
08:35

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Functions of BCL-X L at the Interface between Cell Death and Metabolism

Judith Michels1, Oliver Kepp, Laura Senovilla

  • 1INSERM, U848, Institut Gustave Roussy, Pavillon de Recherche 1, 39 Rue Camille Desmoulins, 94805 Villejuif, France ; Université Paris Sud/Paris XI, 94805 Villejuif, France ; Institut Gustave Roussy, 94805 Villejuif, France.

International Journal of Cell Biology
|March 28, 2013
PubMed

Insights

BCL-XL protein regulates cell death and has additional roles in cell metabolism, including ATP synthesis and autophagy. This review explores BCL-XL

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • BCL-XL, a BCL-2 homolog, is known for its prosurvival functions.
  • It inhibits apoptosis by binding to BAX, BAK, and BH3-only proteins.
  • BCL-XL also has proposed roles in inhibiting p53 and VDAC1, affecting mitochondrial permeability transition (MPT).

Purpose of the Study:

  • To review the multifaceted functions of BCL-XL.
  • To discuss BCL-XL's role at the intersection of cell death and metabolism.
  • To highlight recently discovered cell death-unrelated functions of BCL-XL.

Main Methods:

  • Literature review of existing research on BCL-XL.
  • Analysis of studies investigating BCL-XL's interactions and functions.
  • Synthesis of findings related to cell death and metabolic processes.

Main Results:

  • BCL-XL regulates apoptosis and regulated necrosis.
  • Emerging evidence shows BCL-XL influences mitochondrial ATP synthesis, protein acetylation, autophagy, and mitosis.
  • BCL-XL's functions extend beyond cell death regulation into cellular metabolism.

Conclusions:

  • BCL-XL is a key regulator of cell death pathways.
  • BCL-XL plays significant roles in cellular metabolism, independent of its death-regulating functions.
  • Further research into BCL-XL's metabolic roles is warranted.

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