A brown carbon monoxide dehydrogenase from CO-autotrophically grown cells of Acinetobacter sp. strain JC1, which is unstable outside the cells, was purified 80-fold in seven steps to better than 95% homogeneity, with a yield of 44% in the presence of the stabilizing agents iodoacetamide (1 mM) and ammonium sulfate (100 mM). The final specific activity was 474 mumol of acceptor reduced per min p...

In the title mol-ecule, C(17)H(16)N(2)O(3)S, the benzothia-zole fragment and the benzene ring form a dihedral angle of 13.8 (4)°, and an intramolecular O-H⋯N hydrogen bond occurs. In the crystal structure, pairs of weak inter-molecular O-H⋯S and C-H⋯(O,O) hydrogen bonds link mol-ecules into centrosymmetric dimers. These dimers are related by translation along the a axis and form stacks via π-π ...

The mol-ecule of the title compound, C(15)H(14)N(2)O(2) is almost planar, the dihedral angle between the 6-methyl-1H-benz-imidazole plane and the 2-methoxy-phenol plane being 6.9 (2)°. An intra-molecular O-H⋯N hydrogen bond is present. Adjacent mol-ecules are linked by N-H⋯O hydrogen bonds into a three-dimensional network structure. The benzoimidazole methyl group and its attached C atom are po...

In the title compound, C(14)H(12)N(2)O(2), the asymmetric unit comprises one half-mol-ecule with an inversion center between the pyridine rings. The rings are trans coplanar with the acetyl groups deviating slightly from the mean planes, making a dihedral angle of 4.63 (4)°. In the crystal, mol-ecules are linked by weak inter-molecular C-H⋯O hydrogen bonds, forming a supra-molecular sheet paral...

Cytokinin dehydrogenase (CKX; EC 1.5.99.12) degrades cytokinin hormones in plants. There are several differently targeted isoforms of CKX in plant cells. While most CKX enzymes appear to be localized in the apoplast or vacuoles, there is generally only one CKX per plant genome that lacks a translocation signal and presumably functions in the cytosol. The only extensively characterized maize CKX...