Our investigators have solved the crystal structure of human BIN1’s SH3 domain. The dissociation constant (KD) for BIN1’s SH3 domain and wildtype tau was identified at 1.136µM, a transient but strong interaction as most SH3 domains bind partners between 1- 100µM. They have conducted a virtual screen to identify small molecule inhibitors against BIN1’s SH3 domain. The screen produced several inhibitor candidates with compound #5 as the lead inhibitor (KD = 15uM).
Structural determination of BIN1’s SH3 domain accomplished by first isolating and purifying the ~12kDa domain by expression in E. coli cells and purification by FPLC.