Co-expression of Gprk2 inhibits the Smurf-N-terminus-Smurf-HECT domain interaction. Mutation of the Gprk2 phosphotarget residues in the Smurf-N-terminus renders Smurf insensitive to Gprk2 inhibition.
Source was cell extract of S2 cell line; bait produced from transfected construct; prey produced from transfected construct.