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Related Experiment Video

Updated: Sep 28, 2025

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Photocontrollable Probes for Mitochondrial Protein Profiling.

Shuhong Guo1, Chaonan Yuan1, Wenjie Lang1

  • 1College of Biotechnology and Bioengineering, Zhejiang University of Technology, Chao Wang Road 18, Hangzhou, 310014, P. R. China.

Chembiochem : a European Journal of Chemical Biology
|March 28, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed novel photocontrollable probes (YGH-1 and YGH-2) for precise mitochondrial protein labeling. These probes enable spatiotemporal analysis of mitochondrial proteomes, revealing key proteins in the matrix and inner membrane.

Keywords:
mitochondrial proteomephoto-crosslinkerphotocontrolquinone methide

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Area of Science:

  • Mitochondrial Biology
  • Chemical Biology
  • Proteomics

Background:

  • Mitochondria are central to cellular energy metabolism, signaling, and biosynthesis.
  • Understanding mitochondrial proteome dynamics requires precise tools for spatial and temporal analysis.
  • Existing methods may lack the spatiotemporal control needed to study dynamic mitochondrial processes.

Purpose of the Study:

  • To synthesize and validate novel photocontrollable activity-based probes for mitochondrial proteome analysis.
  • To enable spatially and temporally controlled capture and enrichment of mitochondrial proteins.
  • To identify proteins localized within specific mitochondrial compartments using these new tools.

Main Methods:

  • Synthesis of two photocontrollable probes (YGH-1 and YGH-2) incorporating a mitochondrial targeting moiety (triphenylphosphonium) and a photo-triggered alkyne group.
  • Application of probes to HeLa cells for activity-based protein labeling.
  • Proteomic analysis, including enrichment of labeled proteins, to identify the mitochondrial proteome.

Main Results:

  • Successful synthesis and application of YGH-1 and YGH-2 probes for mitochondrial protein labeling.
  • Proteomic validation identified approximately 300 protein hits, with about half confirmed as mitochondrial proteins.
  • Identified mitochondrial proteins were predominantly localized to the mitochondrial matrix and inner mitochondrial membrane.

Conclusions:

  • YGH-1 and YGH-2 represent a novel class of photocontrollable probes for targeted mitochondrial proteome studies.
  • These probes offer precise spatial and temporal control, advancing the analysis of subcellular proteomes.
  • The findings provide a valuable new tool for investigating mitochondrial function and dynamics.