| X-RAY DIFFRACTION |
7.5 |
277 |
The crystals of PDE9A2 were grown by using hanging drop vapor diffusion method. The PDE9A2 (181 506) (8-10 mg/mL) in a buffer of 50 mM NaCl, 20 mM Tris HCl, pH 7.5, 1 mM -mercaptoethanol, and 1 mM EDTA was mixed with 2 mM IBMX overnight before setting-up of crystallization against the well buffer of 0.1 M HEPES (pH 7.5), 3.0 M sodium formate at 4 C. Crystals of the PDE9-3r complex were prepared by soaking PDE9-IBMX cocrystals in the crystallization buffer plus 2 mM 3r at 25oC for 3 days., VAPOR DIFFUSION, HANGING DROP, temperature 277K |
