GCLiPP: Global Crosslinking and Protein Purification Method for Constructing High-resolution Occupancy Maps for RNA Binding Proteins
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GCLiPP is a global RNA interactome capture method that detects RNA-binding protein (RBP) occupancy transcriptome-wide. GCLiPP maps RBP-occupied sites at a higher resolution than phase separation-based techniques. GCLiPP sequence tags correspond with known RBP binding sites and are enriched for sites detected by RBP-specific crosslinking immunoprecipitation (CLIP) for abundant cytosolic RBPs. Comparison of human Jurkat T cells and mouse primary T cells uncovers shared peaks of GCLiPP signal across homologous regions of human and mouse 3' UTRs, including a conserved mRNA-destabilizing cis-regulatory element. GCLiPP signal overlapping with immune-related SNPs uncovers stabilizing cis-regulatory regions in CD5, STAT6, and IKZF1.
Zhu W, Litterman A, Sekhon H, Kageyama R, Arce M, Taylor K Genome Biol. 2023; 24(1):281.
PMID: 38062486 PMC: 10701951. DOI: 10.1186/s13059-023-03125-2.