1.5.3.14 | purified recombinant mutant ZmPAO-K300M, hanging drop vapor diffusion method, mixing of 9.0 mg/ml protein in 50 mM sodium acetate, pH 5.5, with an equal volume of reservoir solution containing ammonium sulfate in a concentration range 2.22.8 m and 100 mm sodium acetate, pH 4.6, 20°C, two weeks, X-ray diffraction structure determination and analysis at 2.9 A resolution,mlecular displacement, modelling |