1.8.1.14 crystal structure at 2.30 A resolution. The structures of the NADH and NADPH complexes at ca. 2.3 A resolution reveal that a loop consisting of residues Glu180-Thr187 becomes ordered and changes conformation on NAD(P)H binding 1.8.1.14 crystallization by vapor diffusion. X-ray structure is determined at 2.9 A resolution 1.8.1.14 hanging and sitting drop vapor diffusion method 1.8.1.14 hanging drop and sitting drop vapor diffusion methods, using 100 mM Tris, pH 8.0, 2-3 M 1,6-hexanediol, and 200 mM MgCl2 1.8.1.14 hanging drop vapour diffusion method 1.8.1.14 sitting drop vapor diffusion method at room temperature 1.8.1.14 sitting drop vapor diffusion method, using 16-26% 2-methyl-2,4-pentanediol, 0.2 M magnesium acetate, and 0.1 M sodium cacodylate, pH 6.5, at 15°C 1.8.1.14 sitting drop vapor diffusion method, using 35-37% (w/v) PEG 600, 0.3-0.4 M MgCl2, and 0.1 M HEPES, pH 7.5 (mutants Y361F and Y419F), or 27% (w/v) PEG 600, 0.4 M MgCl2, pH 7.2 (mutant Y361F/Y419F), or 31% (w/v) PEG 600, 0.4 M MgCl2, and 0.1 M HEPES, pH 7.2 (mutant C43S)