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Updated: Oct 5, 2025
08:04
DNA Sequence Recognition by DNA Primase Using High-Throughput Primase Profiling
Published on: October 8, 2019
8.8K
Sequence specificity in DNA binding is mainly governed by association.
Emil Marklund1, Guanzhong Mao1, Jinwen Yuan1
1Department of Cell and Molecular Biology, Science for Life Laboratory, Uppsala University, Box 596, 75124, Uppsala, Sweden.
Science (New York, N.Y.)
|January 27, 2022
Summary
DNA binding proteins
Area of Science:
- Molecular biology
- Biophysics
- Genetics
Background:
- Sequence-specific DNA-protein interactions are crucial for gene regulation.
- Understanding the kinetics of these interactions is key to deciphering genetic information access.
Purpose of the Study:
- To develop a predictive model for DNA binding protein kinetics.
- To investigate the relationship between association and dissociation rates in DNA recognition.
Main Methods:
- Developed a kinetic model for DNA binding proteins.
- Utilized protein binding microarrays for high-throughput sequence analysis.
- Performed single-molecule experiments to observe binding kinetics of lac repressor.
Main Results:
- A model predicting an anticorrelation between macroscopic association and dissociation rates was derived.
- Sequence specificity is primarily determined by target recognition efficiency, not dissociation rates.
- Variations in target recognition probability are significantly larger than variations in microscopic dissociation rates.
Conclusions:
- Protein binding to DNA is predominantly influenced by recognition efficiency.
- Optimizing binding rates, rather than dissociation rates, can minimize off-target binding.
- This finding has implications for understanding gene regulation and protein behavior in biological systems.
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