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

577987

Sigma-Aldrich

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

357200

Sigma-Aldrich

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

266892

Sigma-Aldrich

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

357227

Sigma-Aldrich

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

266922

Sigma-Aldrich

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

366986

Sigma-Aldrich

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

203823

Sigma-Aldrich

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

GF23017216

Molybdenum, foil, 6mm disks, thickness 0.025mm, annealed, 99.9%

GF04498702

Molybdenum, foil, 8mm disks, thickness 0.0125mm, 99.9%

GF15667229

Molybdenum, foil, light tested, 100x100mm, thickness 0.01mm, 99.9%

GF46109099

Molybdenum, foil, 8mm disks, thickness 0.03mm, annealed, 99.9%

GF17537812

Molybdenum, foil, 8mm disks, thickness 0.007mm, 99.9%

GF31650342

Molybdenum, foil, 8mm disks, thickness 0.15mm, annealed, 99.9%

GF20045786

Molybdenum, foil, not light tested, 50x50mm, thickness 0.002mm, 99.9%

GF04272049

Molybdenum, pellets, 200g, max. size 10mm, 99.9%

GF59947363

Molybdenum, rod, 50mm, diameter 20.0mm, centerless ground, 99.9%

GF41425242

Molybdenum, tube, 100mm, outside diameter 6.0mm, inside diameter 5.6mm, wall thickness 0.20mm, 99.9%

GF21254981

Molybdenum, rod, 100mm, diameter 25mm, centerless ground, 99.9%

GF43534379

Molybdenum, foil, 8mm disks, thickness 0.20mm, annealed, 99.9%

GF04296618

Molybdenum, foil, light tested, 50x50mm, thickness 0.075mm, annealed, 99.9%

GF37855974

Molybdenum, foil, light tested, 29x200mm, thickness 0.0712mm, annealed, 99.9%

GF30779208

Molybdenum, rod, 500mm, diameter 1.25mm, centerless ground, 99.9%

GF34702411

Molybdenum, tube, 100mm, outside diameter 2.0mm, inside diameter 1.3mm, wall thickness 0.35mm, 99.9%

GF11321457

Molybdenum, rod, 100mm, diameter 4.0mm, centerless ground, 99.9%

GF23794195

Molybdenum, tube, 500mm, outside diameter 1.0mm, inside diameter 0.7mm, wall thickness 0.15mm, 99.9%

GF53846231

Molybdenum, rod, 200mm, diameter 1.25mm, centerless ground, 99.9%

GF38763388

Molybdenum, foil, 8mm disks, thickness 0.1mm, annealed, 99.9%

GF54490574

Molybdenum, rod, 1000mm, diameter 2.0mm, centerless ground, 99.9%

GF15289487

Molybdenum, rod, 100mm, diameter 15.0mm, centerless ground, 99.9%

GF37145358

Molybdenum, foil, not light tested, 50x50mm, thickness 0.007mm, 99.9%