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

GF83172809

Molybdenum, foil, light tested, 130x130mm, thickness 0.015mm, as rolled, 99.9%

GF87443477

Molybdenum, foil, 8mm disks, thickness 0.075mm, annealed, 99.9%

GF70653999

Molybdenum, foil, 8mm disks, thickness 0.020mm, annealed, 99.9%

GF94586372

Molybdenum, foil, 8mm disks, thickness 0.005mm, 99.9%

203823

Sigma-Aldrich

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

366986

Sigma-Aldrich

Molybdenum, powder, 10 μm, ≥99.95% 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

357200

Sigma-Aldrich

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

GF68662503

Molybdenum, rod, 500mm, diameter 1.5mm, centerless ground, 99.9%

GF36011977

Molybdenum, foil, 8mm disks, thickness 0.01mm, 99.9%

GF49993048

Molybdenum, microfoil, disks, 25mm, thinness 1.0μm, specific density 1022μg/cm², permanent mylar 3.5μm support, 99.9%

GF27269635

Molybdenum, rod, 50mm, diameter 25mm, centerless ground, 99.9%

GF11002149

Molybdenum, foil, not light tested, 100x100mm, thickness 0.01mm, 99.9%

GF46843645

Molybdenum, foil, light tested, 50x50mm, thickness 0.009mm, 99.9%

GF23794195

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

GF28017637

Molybdenum, microfoil, disks, 10mm, thinness 0.1μm, specific density 92.4μg/cm², permanent mylar 3.5μm support, 99.9%

GF64333560

Molybdenum, wire reel, 1m, diameter 0.013mm, hard, 99.8+%

GF03978894

Molybdenum, wire reel, 100m, diameter 0.025mm, gold plated, 99.95%

GF15129019

Molybdenum, wire reel, 0.5m, diameter 1.25mm, annealed, 99.95%

GF02780951

Molybdenum, tube, 1000mm, 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%

GF03650543

Molybdenum, foil, light tested, 50x50mm, thickness 0.01mm, 99.9%

GF52864779

Molybdenum, foil, light tested, 25x25mm, thickness 0.01mm, 99.9%

GF44777616

Molybdenum, foil, 50x50mm, thickness 0.1mm, annealed, 99.9%

GF11911474

Molybdenum, wire reel, 10m, diameter 0.013mm, hard, 99.8+%

GF29314188

Molybdenum, rod, 1000mm, diameter 8.0mm, centerless ground, 99.9%

GF34702411

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