| X-RAY DIFFRACTION |
7.50 |
? |
THE RAT SYNAPTOTAGMIN IV C2B DOMAIN WAS CRYSTALLIZED BY THE VAPOR DIFFUSION METHOD (HANGING DROP) BY MIXING 1 MICROLITER PROTEIN (IN 20 MM MES, 150 MM NACL AND 1 MM EDTA, PH 6.32) WITH 1 MICROLITER RESERVOIR SOLUTION (2.5M NACL, 0.1M CACL2, 0.1M HEPES, PH 7.5) SUSPENDED OVER 500 MICROLITERS RESERVOIR SOLUTION. HEXAGONAL CRYSTALS APPEARED OVERNIGHT AND GREW TO A FINAL SIZE OF 0.1 X 0.1 X 0.2 MM WITHIN TWO DAYS. PRIOR TO DATA COLLECTION, CRYSTALS WERE TRANSFERRED INTO CRYSTALLIZATION SOLUTION CONTAINING 4.25 M NACL, 0.1 M HEPES PH 7.5 AND 5%(V/V) ETHYLENE GLYCOL AND THEN COOLED IN LIQUID PROPANE. |
