Iron-transport and iron-storage proteins

Iron-transport and iron-storage proteins constitute a specialized system essential for managing iron levels within the body while preventing oxidative damage (StatPearls, 2023). Key members include Transferrin (UniProt P02787), which safely shuttles ferric iron through the circulatory system, and Ferritin (UniProt P02792), a ubiquitous intracellular protein that stores iron in a non-toxic, bioavailable form (NIH, 2023). Other critical components include Ferroportin (UniProt Q9NP59), the primary iron exporter from cells, and Hepcidin (UniProt P81172), the master regulatory hormone that controls iron flow into the blood (PubMed, PMID: 23024003). Because iron is indispensable for hemoglobin synthesis and DNA replication but can catalyze the formation of harmful free radicals, these proteins are tightly regulated. Clinical targeting of this system is common, involving iron replacement therapy for deficiency and chelation therapy for iron overload conditions like thalassemia or hemochromatosis (DrugBank, 2024). Modern drug development also focuses on the hepcidin-ferroportin axis to manage complex iron distribution disorders such as anemia of chronic disease (Nature Reviews Drug Discovery, 2022).

Other names

Iron metabolism proteinsIron homeostasis proteinsIron-binding proteins

Drugs targeting these proteins work by either replenishing systemic iron levels through supplementation, sequestering excess free iron via chelation to prevent oxidative damage, or modulating regulatory pathways like the hepcidin-ferroportin axis to control iron entry into the plasma (PubMed, PMID: 31515404).