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Updated: Nov 6, 2025

Rab10 Phosphorylation Detection by LRRK2 Activity Using SDS-PAGE with a Phosphate-binding Tag
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Detection of Endogenous RASSF1A Interacting Proteins.

Howard Donninger1,2, Desmond Harrell-Stewart3, Geoffrey J Clark4,5

  • 1Department of Medicine, University of Louisville, Louisville, KY, USA.

Methods in Molecular Biology (Clifton, N.J.)
|May 12, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed a new immunoprecipitation protocol to reliably detect endogenous Ras association domain family member 1-isoform A (RASSF1A) interactions, overcoming limitations of current reagents for studying its biological roles.

Keywords:
AntibodiesImmunoblottingImmunoprecipitationRASSF1ARas

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Area of Science:

  • Molecular Biology
  • Cell Signaling
  • Cancer Research

Background:

  • Ras association domain family member 1-isoform A (RASSF1A) is a Ras effector protein involved in anti-proliferative and pro-apoptotic signaling.
  • RASSF1A also regulates DNA repair and transcription, but its precise mechanisms and interacting partners remain unclear.
  • Existing reagents for RASSF1A detection lack sensitivity and quality, hindering research.

Purpose of the Study:

  • To develop a reliable method for detecting endogenous RASSF1A interactions.
  • To identify RASSF1A binding partners to elucidate its regulatory functions.
  • To overcome limitations of current RASSF1A detection reagents.

Main Methods:

  • Development of a novel immunoprecipitation (IP) protocol.
  • Optimization of the IP protocol to enhance detection sensitivity.
  • Application of the protocol to identify endogenous RASSF1A interacting partners.

Main Results:

  • The developed immunoprecipitation protocol reliably detects endogenous RASSF1A.
  • The protocol demonstrates improved sensitivity compared to existing methods.
  • This method facilitates the identification of RASSF1A's binding partners.

Conclusions:

  • A robust immunoprecipitation protocol for RASSF1A detection has been established.
  • This protocol enables the study of RASSF1A's role in various biological processes.
  • Identifying RASSF1A interactors is crucial for understanding its function in cell signaling and disease.