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  • Molybdenum metabolism in the alga Chlamydomonas stands at the crossroad of those in Arabidopsis and humans.

Molybdenum metabolism in the alga Chlamydomonas stands at the crossroad of those in Arabidopsis and humans.

Metallomics : integrated biometal science (2011-05-31)
Angel Llamas, Manuel Tejada-Jiménez, Emilio Fernández, Aurora Galván
ABSTRACT

Molybdenum (Mo) is a very scarce element whose function is fundamental in living beings within the active site of Mo-oxidoreductases, playing key roles in the metabolism of N, S, purines, hormone biosynthesis, transformation of drugs and xenobiotics, etc. In eukaryotes, each step from Mo acquisition until its incorporation into a biologically active molybdenum cofactor (Moco) together with the assembly of this Moco in Mo-enzymes is almost understood. The deficiency in function of a particular molybdoenzyme can be critical for the survival of the organism dependent on the pathway involved. However, incapacity in forming a functional Moco has a pleiotropic effect in the different processes involving this cofactor. A detailed overview of Mo metabolism: (a) specific transporters for molybdate, (b) the universal biosynthesis pathway for Moco from GTP, (c) Moco-carrier and Moco-binding proteins for Moco transfer and (d) Mo-enzymes, is analyzed in light of recent findings and three systems are compared, the unicellular microalga Chlamydomonas, the plant Arabidopsis and humans.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Molybdenum, nanopowder, <100 nm particle size (TEM), 99.8% trace metals basis
Sigma-Aldrich
Molybdenum, powder, 1-5 μm, ≥99.9% trace metals basis
Sigma-Aldrich
Molybdenum, powder, <150 μm, 99.99% trace metals basis
Sigma-Aldrich
Molybdenum, powder, 10 μm, ≥99.95% 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, foil, thickness 0.1 mm, ≥99.9% trace metals basis
Sigma-Aldrich
Molybdenum, foil, thickness 1.0 mm, ≥99.9% trace metals basis
Molybdenum, rod, 200mm, diameter 25mm, centerless ground, 99.9%
Molybdenum, rod, 100mm, diameter 15.0mm, centerless ground, 99.9%
Molybdenum, rod, 100mm, diameter 6.0mm, centerless ground, 99.9%
Molybdenum, rod, 500mm, diameter 1.5mm, centerless ground, 99.9%
Molybdenum, rod, 100mm, diameter 8.0mm, centerless ground, 99.9%
Molybdenum, rod, 500mm, diameter 12mm, centerless ground, 99.9%
Molybdenum, rod, 200mm, diameter 1.25mm, centerless ground, 99.9%
Molybdenum, rod, 100mm, diameter 25mm, centerless ground, 99.9%
Molybdenum, rod, 500mm, diameter 15.0mm, centerless ground, 99.9%
Molybdenum, rod, 200mm, diameter 5.0mm, centerless ground, 99.9%
Molybdenum, rod, 100mm, diameter 3.0mm, centerless ground, 99.9%
Molybdenum, foil, 8mm disks, thickness 0.025mm, annealed, 99.9%
Molybdenum, foil, 8mm disks, thickness 0.007mm, 99.9%
Molybdenum, foil, 8mm disks, thickness 0.03mm, annealed, 99.9%
Molybdenum, foil, 8mm disks, thickness 0.1mm, annealed, 99.9%
Molybdenum, foil, 6mm disks, thickness 0.5mm, annealed, 99.9%
Molybdenum, foil, 8mm disks, thickness 0.020mm, annealed, 99.9%
Molybdenum, foil, 8mm disks, thickness 0.075mm, annealed, 99.9%
Molybdenum, foil, light tested, 130x130mm, thickness 0.015mm, as rolled, 99.9%
Molybdenum, foil, 8mm disks, thickness 0.15mm, annealed, 99.9%
Molybdenum, foil, light tested, 100x100mm, thickness 0.01mm, 99.9%
Molybdenum, foil, 8mm disks, thickness 0.015mm, as rolled, 99.9%