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