logo
搜索
菜单

In vitro Methylation Assay to Study Protein Arginine Methylation

作者： Rama Kamesh Bikkavilli1, Sreedevi Avasarala1, Michelle Van Scoyk1, Manoj Kumar Karuppusamy Rathinam1, Jordi Tauler1, Stanley Borowicz1,2, Robert A. Winn1,3 1Department of Pulmonary, Critical Care, Sleep, and Allergy,University of Illinois at Chicago, 2Department of Hematology and Oncology,University of Illinois at Chicago, 3Jesse Brown Veterans Affairs Medical Center
简介：

Overview

This article discusses the process of protein arginine methylation, which is catalyzed by protein arginine methyl transferases (PRMTs). The in vitro methylation assay is highlighted as a reliable method for assessing the methylation status of PRMT substrates.

Key Study Components

Area of Science

  • Biochemistry
  • Cell Biology
  • Neuroscience

Background

  • Protein arginine methylation is a crucial post-translational modification.
  • PRMTs play a significant role in various cellular processes.
  • Understanding methylation status can provide insights into protein function.
  • The in vitro assay is essential for studying PRMT substrates.

Purpose of Study

  • To establish the methylation status of PRMT substrates.
  • To utilize epitope-tagged PRMTs for experimental analysis.
  • To compare methylation reactions in different cellular contexts.

Methods Used

  • Expression of epitope-tagged PRMTs in mammalian cells.
  • Immunoprecipitation of PRMTs from cell lysates.
  • Incubation with substrate proteins and tritium-labeled methionine.
  • Analysis of methylation status via SDS-PAGE and autoradiography.

Main Results

  • Successful immunoprecipitation of PRMTs from mammalian cells.
  • Determination of substrate methylation status through SDS-PAGE.
  • Comparison of methylation reactions between different cell lysates.
  • Insights into the enzymatic activity of PRMTs on substrates.

Conclusions

  • The in vitro methylation assay is effective for assessing PRMT activity.
  • Understanding PRMT substrate interactions can inform future research.
  • This method can be applied to study various PRMT-related processes.

Frequently Asked Questions

What is protein arginine methylation?
It is a post-translational modification where methyl groups are added to arginine residues in proteins.
What are PRMTs?
PRMTs are enzymes that catalyze the methylation of arginine residues in proteins.
How is the methylation status assessed?
Through an in vitro methylation assay using SDS-PAGE analysis.
What role do epitope-tagged PRMTs play in the study?
They allow for the specific immunoprecipitation and analysis of PRMT activity.
Why is this research important?
It provides insights into the regulatory mechanisms of protein function and cellular processes.

Protein arginine methylation, catalyzed by a class of enzymes viz., protein arginine methyl transferases (PRMTs), is the process of enzymatic addition of methyl group(s) to arginines within proteins. The in vitro methylation assay is the most dependable tool for assessing the methylation status of known or novel PRMT substrates.

标签: Protein Arginine Methylation,    PRMT1,    In Vitro Methylation Assay,    G3BP1,    S-adenosyl-L-[methyl-3H] Methionine,    Post-translational Modification,    Methyl-arginine Specific Antibodies,    Proteomic Approaches,    Biochemical Assays,   
A Comparative Analysis of Recombinant Protein Expression in Different Biofactories: Bacteria, Insect Cells and Plant Systems 10.3791/52459-v 09:11 min
A Comparative Analysis of Recombinant Protein Expression in Different Biofactories: Bacteria, Insect Cells and Plant Systems
Functional Characterization of Na+/H+ Exchangers of Intracellular Compartments Using Proton-killing Selection to Express Them at the Plasma Membrane 10.3791/52453-v 07:38 min
Functional Characterization of Na+/H+ Exchangers of Intracellular Compartments Using Proton-killing Selection to Express Them at the Plasma Membrane
Genetic Barcoding with Fluorescent Proteins for Multiplexed Applications 10.3791/52452-v 13:14 min
Genetic Barcoding with Fluorescent Proteins for Multiplexed Applications
Methods for Comparing Nutrients in Beebread Made by Africanized and European Honey Bees and the Effects on Hemolymph Protein Titers 10.3791/52448-v
Methods for Comparing Nutrients in Beebread Made by Africanized and European Honey Bees and the Effects on Hemolymph Protein Titers
Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors 10.3791/52441-v 10:33 min
Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors
The Multifaceted Benefits of Protein Co-expression in Escherichia coli 10.3791/52431-v 12:48 min
The Multifaceted Benefits of Protein Co-expression in Escherichia coli
Growth-based Determination and Biochemical Confirmation of Genetic Requirements for Protein Degradation in Saccharomyces cerevisiae 10.3791/52428-v 10:57 min
Growth-based Determination and Biochemical Confirmation of Genetic Requirements for Protein Degradation in Saccharomyces cerevisiae
Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein 10.3791/52427-v 09:59 min
Functional Reconstitution and Channel Activity Measurements of Purified Wildtype and Mutant CFTR Protein
返回顶部