In 1938 it was discovered that naturally occurring molybdenum in certain pastures in the United Kingdom was responsible for a severe disease of cattle and sheep (1). The unhealthy pastures were characterized by a molybdenum content of 20 to 1.00 parts per million on the dry basis, as compared with less than 5 p.p.m. in the normal pasture. The experimental production of the disease by administra...

Triphenylsilanolate ligands were found to impart excellent reactivity and outstanding functional group tolerance on molybdenum alkylidyne complexes, which catalyze alkyne metathesis reactions of all sorts. The active species either can be obtained in high yield by adaptation of the established synthesis routes leading to Schrock alkylidynes or can be generated in situ from the molybdenum nitrid...

The assimilatory nitrate reductase from Chlorella contains flavin, heme, and molybdenum as prosthetic groups. The molybdenum in assimilatory nitrate reductase is associated with a pterin moiety (molybdopterin) as evidenced by the ability of the enzyme to donate active molybdenum cofactor to the Neurospora nitrate reductase mutant nit-1 and by the oxidative conversion of the pterin to two well c...

Molybdenum (Mo), a bcc metal with a melting point of 2,610°C and a density of 10.22 g/cm, is an important refractory metal. The refractory properties of molybdenum reflect the high strength of interatomic bonding resulting from the overlap of the 4d-orbitals and the number of bonding electrons available (1). The melting point of molybdenum is exceeded only by those of tungsten and tantalum, amo...

background: mucopolysaccharidosis type-vi (mps-vi), which is inherited as an autosomal recessive trait, results from the deficiency of n-acetylgalactosamine 4-sulfatase (arylsulfatase b) activity and the lysosomal accumulation of dermatan sulfate. in this study, arsb mutation analysis was performed on three unrelated patients who were originally from the west azerbaijan province of iran. method...