3.4.15.5 | purified enzyme free or in complex with natural microbial tripeptide product K-26, hanging drop vapour diffusion method, mixing of 10 mg/ml protein in 50 mM Tris, pH 8.0, and 150 mM NaCl, with reservoir solution consisting of 0.2 M MgCl2, 0.1 M sodium cacodylate, pH 6.5, and 20% PEG 8000, and equilibration over reservoir solution, at 16°C for 2 days. For the complex with K-26, the protein is preincubated with 5 mM K-26 at room temperature for 1 h before crystallisation. X-ray diffraction structure determination and analysis at 1.80-1.75 A resolution |
753554 |