A large number of proteins contain multiple RNA recognition motifs (RRMs). How multiple RRMs contribute to RNA recognition in solution is, however, poorly understood. Here, we describe a simple biochemical approach called CLAMP (crosslinking and mapping of protein domain) to identify an RRM that is crosslinked to a specific nucleotide in RNA. It involves site-specific incorporation of a chromophore, photochemical RNA-protein crosslinking, and site-specific chemical cleavage of the protein. This technique is suitable for numerous other RNA binding proteins that have multiple RNA binding domains. © 2008 Humana Press.
CITATION STYLE
Banerjee, H., & Singh, R. (2008). A simple crosslinking method, CLAMP, to map the sites of RNA-contacting domains within a protein. Methods in Molecular Biology, 488, 181–190. https://doi.org/10.1007/978-1-60327-475-3_12
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