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Related Experiment Video

Updated: Oct 29, 2025

Mycobacterial DNA Extraction using Bead Beating in Custom Buffer Followed by NGS Workflow

Mycobacterial DNA Extraction using Bead Beating in Custom Buffer Followed by NGS Workflow

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RNA Sequencing for Transcript 5'-End Mapping in Mycobacteria.

M Carla Martini¹, Huaming Sun^1,2, Scarlet S Shell^3,4

¹Department of Biology & Biotechnology, Worcester Polytechnic Institute, Worcester, MA, USA.

Methods in Molecular Biology (Clifton, N.J.)

|July 8, 2021

Summary

This summary is machine-generated.

This study presents a new RNA 5' end mapping method for Mycobacterium tuberculosis and Mycobacterium smegmatis. This technique identifies transcription start sites (TSSs) and RNA cleavage sites, aiding promoter analysis.

Keywords:

Endoribonuclease Mycobacterium smegmatis Mycobacterium tuberculosis RNA 5′ ends RNA processing RNA sequencing RNA-seq RNase RNase cleavage Transcription start site

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Area of Science:

Microbiology
Molecular Biology
Genomics

Background:

Next-generation sequencing (NGS) offers insights beyond gene expression, including transcriptomic features.
Understanding RNA 5' ends is crucial for deciphering gene regulation and RNA processing.

Purpose of the Study:

To detail a robust method for mapping RNA 5' ends in Mycobacterium species.
To enable the identification of transcription start sites (TSSs) and endoribonucleolytic cleavage sites.
To facilitate comparative analysis of promoter utilization under various conditions.

Main Methods:

Development of specific RNA sequencing library preparation protocols for RNA 5' end mapping.
Application of Illumina sequencing platform for high-throughput data generation.
Establishment of bioinformatic pipelines for accurate data analysis.

Main Results:

Successful mapping of RNA 5' ends in Mycobacterium tuberculosis and Mycobacterium smegmatis.
Identification of transcription start sites (TSSs) with high precision.
Characterization of endoribonucleolytic cleavage sites.

Conclusions:

The described method provides a powerful tool for transcriptomic analysis in mycobacteria.
This approach enhances the understanding of gene regulation and RNA processing in these important pathogens.
The methodology is adaptable for studying promoter usage and RNA processing across different experimental conditions.