| X-RAY DIFFRACTION |
8.0 |
? |
The purified crosslinked DNA was dissolved in a buffer containing 22 mM ammonium acetate, 11 mM tris-hydroxymethyl-aminomethane (Tris)-HCl pH 8.0, and 11 mM calcium acetate. Crystals were grown using the sitting drop vapor diffusion method at 277K, in which 3 uL of a reservoir solution containing 27% 2-3 methyl-pentadiol, 115 mM calcium acetate, and 10 mM Tris-HCl pH 8.0 was added to an equal volume of DNA solution, and the mixture was equilibrated against 700 uL of the reservoir solution. Crystals first appeared after two weeks. |
