Abstract
The cellular thermal shift assay (CETSA) and isothermal dose-response fingerprint assay (ITDRF CETSA) have been introduced as powerful tools for investigating target engagement by measuring ligand-triggered thermodynamic stabilization of cellular target proteins. Yet, these techniques have rarely been used to evaluate the thermal stability of RNA-binding proteins (RBPs) when exposed to ligands. Here, we present an adjusted approach using CETSA and ITDRFCETSA to determine the interaction between enasidenib and RBM45. Our assay is sensitive and time-efficient and can potentially be adapted for studying the interactions of RBM45 protein with other potential candidates. Key features • This protocol builds upon the method developed by Molina et al. and extends its application to new protein classes, such as RBPs.
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