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Related Concept Videos

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Related Experiment Video

Updated: Jan 24, 2026

Study of Endoplasmic Reticulum and Mitochondria Interactions by In Situ Proximity Ligation Assay in Fixed Cells
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Antibody-Driven Proximity Labeling in Fixed Tissues.

Daniel Z Bar1,2, Francis S Collins3

  • 1The National Human Genome Research Center, National Institute of Health, Bethesda, MD, USA.

Methods in Molecular Biology (Clifton, N.J.)
|May 25, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a new proximity labeling method using antibodies to map protein interactions within cells and tissues. This technique helps identify neighboring proteins, aiding in the analysis of cellular protein function.

Keywords:
AntibodyBiotinHRPMass-spectrometryProtein-protein interactionsProximity labeling

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Area of Science:

  • Cellular biology
  • Molecular biology
  • Biochemistry

Background:

  • Protein function is intricately linked to complex spatial and temporal organization within cellular assemblies and interactions.
  • Understanding these interactions is crucial for analyzing protein function.

Purpose of the Study:

  • To develop a novel proximity labeling protocol for identifying protein neighbors.
  • To facilitate the analysis of protein function through proximity-based targeting.

Main Methods:

  • Antibody-guided deposition of tags in fixed and permeabilized cell lines.
  • Application of the protocol to primary human tissue samples.

Main Results:

  • Successfully established a protocol for proximity labeling guided by antibodies.
  • Demonstrated the applicability of the method in both cell lines and human tissues.

Conclusions:

  • The antibody-guided proximity labeling protocol offers a powerful tool for studying protein interactions and cellular organization.
  • This method enhances the analysis of protein function by identifying proximal proteins.