X-RAY DIFFRACTION |
6.0 |
? |
CRYSTALLISATION PERFORMED USING THE HANGING DROP TECHNIQUE. 2 MICROL OF PROTEIN SOLUTION (8MG/ML) IN 10MM PHOSPHATE BUFFER PH7.0, 1MM EDTA AND 2MM BETA-MERCAPTOETHANOL WAS ADDED TO 2 MICROL OF RESERVOIR SOLUTION. THE RESERVOIR CONTAINED 20-25% AMMONIUM SULFATE, 30-60 MM DITHIOTHREITOL AND 100MM MORPHOLINOETHANESULFONIC ACID BUFFER PH5.4. DROPS WERE STREAK SEEDED AFTER 1 DAY USING A CAT'S WHISKER FROM CRYSTALS GROWN UNDER SIMILAR CONDITIONS. SOLID CIBACRON BLUE WAS SEEDED INTO THE DROP. SIX WEEKS LATER THE CRYSTALS WERE SUBJECTED TO X-RAY ANALYSIS., pH 6.0, vapor diffusion - hanging drop - streak seeding |