GTF2IRD2 from the Williams-Beuren critical region encodes a mobile-element-derived fusion protein that antagonizes the action of its related family members.
Palmer SJ, Taylor KM, Santucci N, Widagdo J, Chan YK, Yeo JL, Adams M, Gunning PW, Hardeman EC. J Cell Sci. 2012 Nov 1; 125(Pt 21):5040-50. Epub 2012 Aug 16.