X-RAY DIFFRACTION |
7.25 |
293 |
protein solution: 415.2 micro-M MMP9 WT + 0.120 M Acetohydroxamic acid in 20 mM Tris pH 7.0 with 0.001 M inhibitor DC27 and 10% DMSO.
precipitant: 40% MPEG 5K ; 0.1 M bicine ; pH 7.25
sitting drops of 1 micro-L protein solution and 1 micro-L precipitant solution.
cryoprotectant:_40% cryomix CM2 (25 % di-ethylene glycol + 25 % glycerol + 25 % 1,2-propanediol), 10% PEG 10K, 200 milli-M NaCl, 100 milli-M Na propionate, Na cacodylate, Bis-Tris-propane (PCTP 50% acid/50% basic) pH 7.0 + 0.001 M inhibitor DC27. |