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

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%

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%

GF38214187

Molybdenum, tube, 100mm, outside diameter 1.0mm, inside diameter 0.7mm, wall thickness 0.15mm, 99.9%

GF40454805

Molybdenum, foil, light tested, 25x25mm, thickness 0.005mm, 99.9%

GF04293446

Molybdenum, tube, 500mm, outside diameter 3.15mm, inside diameter 2.39mm, wall thickness 0.38mm, 99.9%

GF31997289

Molybdenum, foil, light tested, 29x500mm, thickness 0.0712mm, annealed, 99.9%

GF24009128

Molybdenum, rod, 100mm, diameter 3.0mm, centerless ground, 99.9%

GF27269635

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

GF61121304

Molybdenum, foil, not light tested, 100x100mm, thickness 0.007mm, 99.9%

GF34073344

Molybdenum, rod, 200mm, diameter 10.0mm, centerless ground, 99.9%

GF11002149

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

GF15351735

Molybdenum, tube, 50mm, outside diameter 6.4mm, inside diameter 4.6mm, wall thickness 0.9mm, 99.9%

GF25048188

Molybdenum, rod, 100mm, diameter 8.0mm, centerless ground, 99.9%

GF49993048

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

GF64333560

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

GF46843645

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

GF01792076

Molybdenum, rod, 1000mm, diameter 6.0mm, centerless ground, 99.9%

GF62073299

Molybdenum, foil, not light tested, 100x100mm, thickness 0.005mm, 99.9%

GF56726499

Molybdenum, tube, 200mm, outside diameter 1.0mm, inside diameter 0.7mm, wall thickness 0.15mm, 99.9%

GF00096274

Molybdenum, pellets, 50g, max. size 10mm, 99.9%

GF50216352

Molybdenum, rod, 100mm, diameter 12mm, centerless ground, 99.9%

GF43249169

Molybdenum, foil, not light tested, 150x150mm, thickness 0.05mm, annealed, 99.9%

GF59041740

Molybdenum, mesh, 150x150mm, nominal aperture 0.44mm, wire diameter 0.07mm, 50 wires/inch, open area 67%, plain weave mesh

GF62927297

Molybdenum, foil, 100x100mm, thickness 0.25mm, annealed, polished on both sides, 99.9%