hanging drop vapor diffusion method, using 100 mM Tris-HCl. pH 8.5, containing 2.0 M ammonium sulfate
hexagonal crystals are grown using the hanging-drop method, crystals are in space group P6(3)22 with cell dimensions a = b = 128.08 A, c = 85.44 A
in complex with cobalt and sirohydrochlorin, to 1.7 A resolution
using the sitting drop vapor diffusion technique in 96-well plates, in two different crystal forms consisting of a central mixed b-sheet flanked by four alpha helices