Purification crystallization and preliminary X-ray analysis of adenylylsulfate reductase from Desulfovibrio vulgaris Miyazaki F

摘要

Sulfur in its various oxidation states is used for energy conservation in many microorganisms. Adenylylsulfate reductase is a key enzyme in the sulfur-reduction pathway of sulfate-reducing bacteria. The adenylylsulfate reductase from Desulfovibrio vulgaris Miyazaki F has been purified and crystallized at 277 K using the vapour-diffusion method with ammonium sulfate as the precipitating agent. A data set was collected to 1.7 Å resolution from a single crystal at 100 K using synchrotron radiation. The crystal belonged to space group P31, with unit-cell parameters a = b = 125.93, c = 164.24 Å. The crystal contained two molecules per asymmetric unit, with a Matthews coefficient (V M) of 4.02 ų Da⁻¹; the solvent content was estimated to be 69.4%.