Related Experiment Video
Updated: Nov 14, 2025
08:48
Separation and Fractionation of Culture Filtrate Proteins (CFPs) from Mycobacterium tuberculosis
Published on: July 11, 2025
318
Proteogenomic Approach for Mycobacterium tuberculosis Investigation
Julia Bespyatykh1, Georgij Arapidi2, Egor Shitikov2
1Federal Research and Clinical Center of Physical-Chemical Medicine, Moscow, Russia. juliabespyatykh@gmail.com.
Methods in Molecular Biology (Clifton, N.J.)
|March 9, 2021
Summary
Proteogenomics uses mass spectrometry data to improve the accuracy of protein-coding sequence annotation in Mycobacterium tuberculosis. This method helps identify correct start/stop sites and discover novel open reading frames.
Area of Science:
- Proteomics
- Genomics
- Bioinformatics
Background:
- Mass spectrometry (MS/MS) advancements enable proteomic data utilization for predicting protein-coding sequences.
- Proteogenomics integrates proteomic and genomic information to refine gene annotations.
Purpose of the Study:
- To enhance the annotation of Mycobacterium tuberculosis strains using proteogenomics.
- To detail protein extraction, LC-MS/MS preparation, and data analysis procedures for proteogenomic studies.
Main Methods:
- Protein extraction from Mycobacterium tuberculosis strains.
- Liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis of extracted proteins.
- Bioinformatic analysis of proteomic data for sequence annotation.
Main Results:
- Improved accuracy in identifying start and stop sites of protein-coding sequences.
- Discovery of previously unannotated open reading frames in the Mycobacterium tuberculosis genome.
- Validation of proteogenomic approach for bacterial genome annotation.
Conclusions:
- Proteogenomics is a powerful approach for refining genome annotations, particularly for complex bacterial species like Mycobacterium tuberculosis.
- The described methods provide a framework for applying proteogenomics to improve the understanding of microbial genomes.
