Magnesium transporter and channel (Mg transporter)

Magnesium transporters and channels are a diverse group of proteins responsible for maintaining magnesium homeostasis across cellular and organelle membranes (Schlingmann et al., 2002). Key members include the TRPM6 and TRPM7 channels, which facilitate magnesium uptake in the intestines and kidneys, and the SLC41 family of transporters that manage cellular efflux (Ryazanova et al., 2010; Kolisek et al., 2007). These proteins are critical because magnesium serves as a cofactor for over 300 enzymatic reactions, including those involving ATP, DNA synthesis, and protein folding (StatPearls, 2023). Mutations or dysregulation of these transporters are linked to various conditions such as hereditary hypomagnesemia, XMEN syndrome, and chronic metabolic diseases like type 2 diabetes (Li et al., 2011). Therapeutic interventions often involve direct magnesium supplementation to bypass or compensate for transport defects, while certain drugs like proton pump inhibitors can inadvertently inhibit these channels, leading to secondary deficiencies (William and Danziger, 2016). Understanding the specific roles of these transporters is essential for managing electrolyte imbalances and associated cardiovascular or neurological complications.

Other names

Mg2+ transporterMagnesium transport proteinMagnesium channelTRPM6TRPM7MagT1SLC41A1CNNM2MRS2

Magnesium transporters and channels are primarily targeted through substrate replacement therapy using magnesium salts to restore physiological levels. Additionally, certain drugs like amiloride act as magnesium-sparing agents by inhibiting renal excretion, while others like proton pump inhibitors can negatively modulate these transporters, leading to deficiency.