mSIRK (G-Protein βγ Binding Peptide) is an cell-permeable activator of ERK1/2, with EC50 of 2.5-5 μM. mSIRK disrupts the interaction between α and βγ subunits and promotes α subunit dissociation without stimulating nucleotide exchange[1].
References
[1] Farida Goubaeva, et al. Stimulation of Cellular Signaling and G Protein Subunit Dissociation by G Protein βγ Subunit-binding Peptides. J Biol Chem. 2003 May 30;278(22):19634-41. DOI:10.1074/jbc.M300052200
