X-RAY DIFFRACTION |
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277.15 |
reservoir solution: 0.3M Lithium sulfate, 0.1M ADA (pH 6.5), 30% v/v PEG 400. Prior to setting up the crystallization drops, 4 micro liter of the reservoir solution was mixed with 1 micro liter 30% w/v Dextran sulfate sodium salt Mr 5000. Crystallization drops were set up by mixing the reservoir/additive mixture with protein at 1:1 or 2:1 ratio and the drops were left to equilibrate against 0.5 milliliter reservoir at room temperature and crystal grew in cold room (4 degree) |