Abstract
Co-immunoprecipitation is a traditional method but still one of the most powerful tools to identify novel interaction partners by increasing its specificity and decreasing false-positive result. In the current work, we show a robust procedure where the use of two sequential approaches (separation of postsynaptic density by centrifuge separation method in combination with detergent treatment and the use of specific antibodies against target proteins for its precipitation) improved the specificity of co-immunoprecipitation methods. Mass spectrometric analysis also helped to identify novel-associated proteins with target proteins without any bias of suspected interaction partners.
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Acknowledgments
We are grateful to Dr. Shiro Kominami for preparing RC-19 antibodies. This study was supported by Japan Society for the Promotion of Science (JSPS) KAKENHI (Grant Numbers JP2389076, JP25860392, JP15K19164). The authors report no biomedical financial interests or potential conflicts of interest.
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Murakami, G., Kawato, S. (2019). Co-immunoprecipitation Methods to Identify Associated Proteins with Estrogen Receptor α at Postsynaptic Density in Brain Tissue. In: Odagaki, Y., Borroto-Escuela, D. (eds) Co-Immunoprecipitation Methods for Brain Tissue . Neuromethods, vol 144. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-8985-0_2
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DOI: https://doi.org/10.1007/978-1-4939-8985-0_2
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