Protocol for in vitro phosphorylation of the MUS81-binding region of SLX4 using CDK1-cyclin B

Abstract

Summary: Phosphorylation is a post-translational modification that can alter protein structure and regulate protein-protein interactions. Here, we present a procedure for in vitro phosphorylation of the MUS81-binding region of SLX4 (SLX4MBR) using cyclin-dependent kinase 1-cyclin B. We describe steps for the dialysis and phosphorylation of target proteins followed by purification using size-exclusion chromatography. Finally, we detail a system to monitor phosphorylation effectiveness and identify phosphorylated residues. We anticipate this protocol to be readily adapted for other protein targets or kinases.For complete details on the use and execution of this protocol, please refer to Payliss et al. (2022).1 : Publisher’s note: Undertaking any experimental protocol requires adherence to local institutional guidelines for laboratory safety and ethics.

Keywords

• Molecular Biology
• Protein Biochemistry