... ; it is mapped on chromosome 7. (Lee, 152) The mutated gene that causes CF actually results from the flawed production of a "CFTR" protein, or cystic fibrosis transmembrane regulator. In a healthy cell, this CFTR protein would act as a transport channel (transport protein) for sodium and chloride within the cell membrane. In a person with CF, this protein is unable to function properly because the instructions the defective gene has supplied on how to ... thicker mucus, in turn, causes many of the symptoms of CF. Mucus within a healthy body lubricates our internal systems, preventing tis...

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• Grade Level: Undergraduate