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. 2006 Aug;Chapter 27:Unit 27.4.
doi: 10.1002/0471142727.mb2704s75.

RNA Immunoprecipitation for Determining RNA-protein Associations in Vivo


RNA Immunoprecipitation for Determining RNA-protein Associations in Vivo

Chris Gilbert et al. Curr Protoc Mol Biol. .


Similar to chromatin immunoprecipitation (ChIP), RNA immunoprecipitation (RIP) can be used to detect the association of individual proteins with specific nucleic acid regions, in this case on RNA. Live cells are treated with formaldehyde to generate protein-RNA cross-links between molecules that are in close proximity in vivo. RNA sequences that cross-link with a given protein are isolated by immunoprecipitation of the protein, and reversal of the formaldehyde cross-linking permits recovery and quantitative analysis of the immunoprecipitated RNA by reverse transcription PCR. The basics of RIP are very similar to those of ChIP, but with some important caveats. This unit describes the RIP procedure for Saccharomyces cerevisiae. Although the corresponding steps for metazoan cells have not yet been worked out, it is likely that the yeast procedure can easily be adapted for use in other organisms.

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