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Updated: Feb 12, 2026
12:24
PAR-CliP - A Method to Identify Transcriptome-wide the Binding Sites of RNA Binding Proteins
Published on: July 2, 2010
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The establishment of methods for free PAR generation and PAR reader detection
Yueshuang Ke1, Ke Wang2, Hui Xu3
1The Key Laboratory of Molecular Epigenetics of the Ministry of Education, Northeast Normal University, Changchun, Jilin 130024, China; School of Life Science, Northeast Normal University, Changchun, Jilin 130024, China.
Molecular and Cellular Probes
|April 9, 2018
Summary
Researchers developed a non-radioactive method to generate free poly (ADP-ribose) (PAR) and detect its interactions with proteins. This technique aids in understanding the role of PAR reading in biological processes.
Area of Science:
- Biochemistry
- Molecular Biology
- Cellular Biology
Background:
- Poly (ADP-ribose) polymerase 1 (PARP1) is a key DNA damage sensor.
- PARP1 catalyzes poly (ADP-ribose) (PAR) synthesis, consuming NAD+.
- PARP1 also influences protein function through noncovalent modifications.
Purpose of the Study:
- To establish a non-radioactive method for generating free PAR.
- To develop a convenient assay for detecting protein-PAR interactions.
- To facilitate research on the biological significance of PAR reading.
Main Methods:
- Generated free PAR by cleaving PAR from autoPARylated PARP1 using PARG.
- Utilized dot-blot assays to determine interactions between free PAR and target proteins.
- Employed non-radioactive techniques for PAR generation and interaction detection.
Main Results:
- Successfully generated non-radiolabeled free PAR.
- Demonstrated the utility of dot-blot assay for detecting protein-PAR interactions.
- Established a convenient and non-radioactive method for studying PAR binding.
Conclusions:
- The developed method provides a non-radioactive and convenient approach for studying PAR.
- This technique will advance the exploration of PAR reading's significance in biological processes.
- Facilitates research into the noncovalent roles of PARP1 and PAR interactions.
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