Structural basis for the interaction between DJ-1 and Bcl-XL

Mi Kyung Lee, Min Sung Lee, Da Woon Bae, Dong Hwa Lee, Sun Shin Cha, Seung Wook Chi

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

DJ-1 is a multifunctional protein associated with Parkinson's disease (PD) and tumorigenesis. In response to ultraviolet B (UVB) irradiation, DJ-1 is translocated into the mitochondria, and its interaction with the mitochondrial protein Bcl-XL protects cells against death. In this study, we characterized the molecular interaction between DJ-1 and Bcl-XL by NMR spectroscopy. The NMR chemical shift perturbation data demonstrated that the oxidized but not the reduced form of DJ-1 binds to the predominantly hydrophobic groove surrounded by the BH1–BH3 domains in Bcl-XL. In addition, our results showed that the C-terminal α8-helix peptide (Cpep) of DJ-1 binds to the pro-apoptotic BH3 peptide-binding hydrophobic groove in Bcl-XL and, thus, acts as a Bcl-XL-binding motif. In combination with the NMR chemical shift perturbation data, a refined structural model of the Bcl-XL/DJ-1 Cpep complex revealed that the binding mode is remarkably similar to that of other Bcl-XL/pro-apoptotic BH3 peptide complexes. Taken together, our results provide a structural basis for the binding mechanism between DJ-1 and Bcl-XL, which will contribute to molecular understanding of the role of mitochondrial DJ-1 in Bcl-XL regulation in response to oxidative stress.

Original languageEnglish
Pages (from-to)1067-1073
Number of pages7
JournalBiochemical and Biophysical Research Communications
Volume495
Issue number1
DOIs
StatePublished - 1 Jan 2018

Keywords

  • Bcl-X
  • Complex structure
  • DJ-1
  • NMR spectroscopy
  • Protein interaction

Fingerprint

Dive into the research topics of 'Structural basis for the interaction between DJ-1 and Bcl-XL'. Together they form a unique fingerprint.

Cite this