STEAP2 (Six-Transmembrane Epithelial Antigen of the Prostate 2): STEAP2 is a transmembrane protein that plays a role in cellular iron homeostasis. It helps regulate the transport of iron across cell membranes, affecting iron availability for various cellular functions. STEAP2’s role in iron regulation and its potential link to iron-related disorders make it an important focus in studies of iron metabolism and cellular physiology.