THE 1.8 A STRUCTURE OF MICROBATCH OIL DROP GROWN TETRAGONAL HEN EGG WHITE LYSOZYME
Bound-solvent structures for microgravity-, ground control-, gel- and microbatch-grown hen egg-white lysozyme crystals at 1.8 A resolution.
KVFGRCELAAAMKRHGLDNYRGYSLGNWVCAAKFESNFNTQATNRNTDGSTDYGILQINSRWWCNDGRTPGSRNLCNIPC SALLSSDITASVNCAKKIVSDGNGMNAWVAWRNRCKGTDVQAWIRGCRL
A SOLUTION CONTAINING 40 MG/ML OF LYSOZYME (SIGMA L-6876, BATCH NUMBER, LOT 65H7025, IE A DIFFERENT SIGMA SAMPLE TO THE EXPERIMENTS DESCRIBED ABOVE) IN 10 MM SODIUM CITRATE BUFFER PH 4.7 WAS MIXED IN AN EPPENDORF TUBE WITH EQUAL VOLUMES OF 12 % SODIUM CHLORIDE (BDH). THE MIXTURE WAS FILTERED THROUGH A 0.22 UM FILTER AND 8 UL DROPS WERE MANUALLY DISPENSED UNDER PARAFFIN OIL USING A GILSON MICRO PIPPETTE. OVER 20 IDENTICAL DROPS WERE SET UP AND, WITHIN A WEEK, SINGLE CRYSTALS TYPICALLY MEASURING 0.5 X 0.4 X 0.3 MM WERE OBTAINED IN MOST OF THE DROPS. CRYSTALLISATION TOOK PLACE AT A TEMPERATURE OF 18 - 20 C., drops under paraffin oil, temperature 291K
LYSOZYME, 1, 4-BETA-N-ACETYLMURAMIDASE C, HYDROLASE