2.8.1.2 - 645568 2.8.1.2 hanging drop vapor diffusion method 645558 2.8.1.2 in complex with inhibitors 2-[2-[(4-oxo-3,4,4a,8a-tetrahydroquinazolin-2-yl)sulfanyl]acetamido]thiophene-3-carboxamide and 2-[[2-(1,4-dihydronaphthalen-1-yl)-2-oxoethyl]sulfanyl]-6-methylpyrimidin-4(3H)-one. Persulfurated residue C248 interacts with the 4-pyrimidone-like aromatic ring of both compounds, and direct hydrogen bonding by R188 and S250 and water-mediated hydrogen bonding by E195 and R197 are observed 762435 2.8.1.2 sitting drop vapor diffusion method, using 2 M ammonium sulfate, 0.1 M sodium acetate pH 4.5 and 0.02 M betaine hydrochloride 725528 2.8.1.2 structure of CysA2 at 2.29 A shows two alpha/beta domains. The N domain is inactive, whereas the C domain is responsible for the catalytic activity. The conserved catalytic cysteine of the active site is Cys233 762459