The crystal structure of TREX1 explains the 3' nucleotide specificity and reveals a polyproline II helix for protein partnering.
de Silva U, Choudhury S, Bailey SL, Harvey S, Perrino FW, Hollis T. The crystal structure of TREX1 explains the 3' nucleotide specificity and reveals a polyproline II helix for protein partnering. J Biol Chem. 2007 Apr 06; 282(14):10537-43.