| X-RAY DIFFRACTION |
? |
293 |
10 MIKROLITER CK2ALPHA' SOLUTION AFTER PROTEIN PURIFICATION (5 MG/ML CK2ALPHA' IN 500 MM NACL, 25 MM TRIS/HCl, PH 8.5) WERE MIXED WITH 5 MIKROLITER RESERVOIR SOLUTION [810 MM LICL, 28% (W/V) PEG 6000, 100 MM TRIS/HCL, PH 8.5]. AFTER EQUILIBRATION (SITTING DROP PLATES; VAPOUR DIFFUSION), CRYSTALLIZATION WAS INITIATED BY MICROSEEDING. THE CRYSTALS WERE OPTIMIZED BY MACROSEEDING. THE GTP-ANALOGUE GMPPNP WAS COMBINED WITH THESE CRYSTALS BY SOAKING. A 20 MM GMPPNP SOLUTION IN 60 MM MGCL2 WAS PREPARED. FOR SOAKING, 3 MICROLITER OF THE CRYSTAL MOTHER LIQUOR WAS REMOVED AND REPLACED BY 3 MICROLITER OF 20 MM GMPPNP, 60 MM MGCL2. ALL STEPS WERE PERFORMED AT A TEMPERATURE OF 293 K. |
