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ChEC-Seq: A Comprehensive Guide for Scalable and Cost-Efficient Genome-Wide Profiling in Saccharomyces cerevisiae
Tamar Gera1, Divya Krishna Kumar1, Gilad Yaakov1
1Department of Molecular Genetics, Weizmann Institute, Rehovot, Israel.
Methods in Molecular Biology (Clifton, N.J.)
|August 14, 2024
Summary
Chromatin endogenous cleavage coupled with high-throughput sequencing (ChEC-seq) maps protein-DNA interactions in vivo without antibodies. This improved method offers high resolution and genome-wide coverage for binding site analysis.
Area of Science:
- Molecular Biology
- Genomics
- Biotechnology
Background:
- Protein-DNA interactions are crucial for cellular processes.
- Traditional methods like ChIP-seq have limitations in resolution and throughput.
- Chromatin endogenous cleavage coupled with high-throughput sequencing (ChEC-seq) offers an alternative.
Purpose of the Study:
- To detail the ChEC-seq method for profiling protein-DNA interactions.
- To highlight improvements in ease, cost, and throughput compared to previous protocols.
- To enable genome-wide binding profile analysis at high resolution.
Main Methods:
- Utilizes a fusion protein of MNase (micrococcal nuclease) and the target protein.
- Calcium-induced MNase activation leads to DNA cleavage at protein binding sites.
- Involves purification of small DNA fragments, library preparation, and sequencing.
Main Results:
- ChEC-seq provides genome-wide coverage at near nucleotide resolution.
- The method detects protein-DNA binding locations in vivo.
- Improvements enhance experimental scale and reduce costs.
Conclusions:
- ChEC-seq is a powerful, antibody-free method for mapping protein-DNA interactions.
- The protocol facilitates detailed analysis of binding sites.
- This technique advances the study of genome-wide binding profiles.
