Molybdenum (Mo)

Molybdenum is an essential trace element that functions as a fundamental component of the molybdenum cofactor (Moco), which is indispensable for the catalytic activity of specific human enzymes: sulfite oxidase, xanthine oxidase, aldehyde oxidase, and the mitochondrial amidoxime-reducing component [2, 11, 21]. These enzymes facilitate vital metabolic processes, including the detoxifying conversion of sulfite to sulfate and the final steps of purine catabolism to uric acid [9, 15, 17]. While molybdenum itself is not a traditional therapeutic target such as a receptor or enzyme, its metabolic pathways are critical; genetic defects in Moco biosynthesis result in Molybdenum Cofactor Deficiency (MoCD), a severe neonatal disorder characterized by rapid neurodegeneration and early mortality [4, 6, 18]. Therapeutic strategies for MoCD Type A involve replacement of the missing Moco precursor using drugs like fosdenopterin (Nulibry) [1, 7]. Additionally, molybdenum-containing compounds like ammonium tetrathiomolybdate are utilized clinically as copper chelators to manage Wilson's disease or investigated for anti-angiogenic properties in oncology [13]. High dietary or industrial exposure to molybdenum can disrupt mineral balance, potentially leading to secondary copper deficiency or gout-like symptoms due to excessive uric acid production [2, 14, 16].

Other names

Molybdenum elementMoMolybdenum cofactor (Moco)Molybdopterin

Molybdenum serves as a catalytic metal center within the molybdenum cofactor (Moco), facilitating oxygen atom transfer and redox cycling between Mo(IV) and Mo(VI) states in specific metabolic enzymes [11, 18, 22].