SLC7A1 (Solute Carrier Family 7 Member 1) is a gene that encodes a transporter protein responsible for the uptake of amino acids, particularly arginine and lysine. These amino acids are essential for cell growth, nitric oxide production, and various metabolic processes. SLC7A1 also plays a role in immune regulation and has been associated with certain cancers, making it a significant focus in biomedical research.