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(January 2009). A membrane transport protein (or simply transporter) is a membrane protein involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane.January 2009). A membrane transport protein (or simply transporter) is a membrane protein involved in the movement of ions, small molecules, or macromolecules, such as another protein, across a biological membrane.
The CFTR protein is also responsible for the for the regulation of other channels such as the ones that transport positively charged particles for example the transportation of sodium ions across cell membranes. This process is necessary for the normal function of organs such as the lungs and the pancreas.