STEAP2 (Six-Transmembrane Epithelial Antigen of the Prostate 2): STEAP2 is a transmembrane protein involved in cellular iron homeostasis. It aids in regulating the transport of iron across cell membranes, influencing iron availability for various cellular functions. STEAP2’s role in iron regulation and its potential association with iron-related disorders make it a significant focus in studies of iron metabolism and cellular physiology.