Iron-sulfur (Fe-S) clusters are inorganic prosthetic groups in proteins composed exclusively of iron and inorganic sulfide. These cofactors are required in a wide range of critical cellular pathways. Iron-sulfur clusters do not form spontaneously in vivo; several proteins are required to mobilize sulfur and iron. assemble and traffic-nascent clusters. https://parisnaturalfoodes.shop/product-category/magnesium-bis-glycinate-140-2/