Introduction of the most common cystic fibrosis mutation (Delta F508) into human P-glycoprotein disrupts packing of the transmembrane segments.

Abstract excerpt

The most common mutation in cystic fibrosis (deletion of phenylalanine 508 (DeltaF508) in the cystic fibrosis conductance transmembrane regulator (CFTR) gene) causes defective synthesis of CFTR protein. To understand how this deletion interferes with protein folding, we made the equivalent deletion (DeltaY490) in P-glycoprotein (P-gp). A Cys-less P-gp with cysteines in transmembrane (TM) 4 or TM5 can be...

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