Utilization of Stability-based Proteomics for the Investigation of Structured RNA-protein Interactions

The stability of proteins from rates of oxidation (SPROX), thermal protein profiling (TPP) methods as well as triple helix pulldowns with LC-MS/MS readouts are used to identify the protein targets of three RNA ligands, the MALAT1 triple helix (TH), a viral stem loop (SL), and an unstructured RNA (PolyU) in LNCaP nuclear lysate. This work establishes a novel platform for the global discovery and interrogation of RNA-protein interactions that is generalizable to numerous biological contexts and RNA targets.