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Biology of the molybdenum cofactor.

Biology of the molybdenum cofactor.

Journal of experimental botany (2007-03-14)

Ralf R Mendel

ABSTRACT

The transition element molybdenum (Mo) is an essential micronutrient for plants where it is needed as a catalytically active metal during enzyme catalysis. Four plant enzymes depend on molybdenum: nitrate reductase, sulphite oxidase, xanthine dehydrogenase, and aldehyde oxidase. However, in order to gain biological activity and fulfil its function in enzymes, molybdenum has to be complexed by a pterin compound thus forming the molybdenum cofactor. In this article, the path of molybdenum from its uptake into the cell, via formation of the molybdenum cofactor and its storage, to the final modification of the molybdenum cofactor and its insertion into apo-metalloenzymes will be reviewed.

MATERIALS

Product Number

Brand

Product Description

Sigma-Aldrich

Molybdenum, nanopowder, <100 nm particle size (TEM), 99.8% trace metals basis

Sigma-Aldrich

Molybdenum, powder, <150 μm, 99.99% trace metals basis

Sigma-Aldrich

Molybdenum, powder, <150 μm, 99.9% trace metals basis

Sigma-Aldrich

Molybdenum, foil, thickness 0.025 mm, ≥99.9% trace metals basis

Sigma-Aldrich

Molybdenum, powder, 10 μm, ≥99.95% trace metals basis

Sigma-Aldrich

Molybdenum, foil, thickness 1.0 mm, ≥99.9% trace metals basis

Sigma-Aldrich

Molybdenum, foil, thickness 0.1 mm, ≥99.9% trace metals basis

Sigma-Aldrich

Molybdenum, powder, 1-5 μm, ≥99.9% trace metals basis

Molybdenum, wire reel, 5m, diameter 0.035mm, as drawn, 99.95%

Molybdenum, foil, 25mm disks, thickness 0.015mm, annealed, 99.9%

Molybdenum, foil, 10mm disks, thickness 0.05mm, annealed, 99.9%

Molybdenum, foil, 4mm disks, thickness 0.15mm, annealed, 99.9%

Molybdenum, wire reel, 50m, diameter 0.5mm, annealed, 99.95%

Molybdenum, foil, 10mm disks, thickness 0.005mm, 99.9%

Molybdenum, foil, 6mm disks, thickness 0.015mm, annealed, 99.9%

Molybdenum, foil, 25mm disks, thickness 0.05mm, annealed, 99.9%

Molybdenum, wire reel, 50m, diameter 0.2mm, as drawn, 99.95%

Molybdenum, wire reel, 200m, diameter 0.5mm, annealed, 99.95%

Molybdenum, foil, 10m coil, thickness 0.04mm, coil width 0.7mm, annealed, 99.9%

Molybdenum, foil, 6mm disks, thickness 0.006mm, 99.9%

Molybdenum, foil, 300x300mm, thickness 0.30mm, annealed, 99.9%

Molybdenum, foil, 25mm disks, thickness 0.01mm, 99.9%

Molybdenum, foil, 4mm disks, thickness 0.30mm, annealed, 99.9%

Molybdenum, foil, 25mm disks, thickness 0.075mm, annealed, 99.9%

Molybdenum, foil, 15mm disks, thickness 0.75mm, annealed, 99.9%

Molybdenum, foil, 6mm disks, thickness 0.075mm, annealed, 99.9%

Molybdenum, foil, 6mm disks, thickness 0.020mm, annealed, 99.9%

Molybdenum, foil, 50mm disks, thickness 0.008mm, 99.9%

Molybdenum, foil, 6mm disks, thickness 0.15mm, annealed, 99.9%

Molybdenum, foil, 1m coil, thickness 0.008mm, 99.9%