The CFTR gene (Cystic Fibrosis Transmembrane Conductance Regulator) is responsible for coding a protein that functions as a channel for the transport of chloride ions across cell membranes. This gene is located on the long arm of chromosome 7 (7q31.2). The CFTR protein plays a crucial role in maintaining the balance of salt and water on epithelial surfaces, particularly in the lungs and digestive system.
