Transporter mutation alters cell energy

The cotransporter NKCC1 moves sodium, potassium and chloride ions across the cell membrane and has roles regulating cell volume, epithelial transport and neuronal excitability.

Cell skeleton and the brush border

The epithelial cells lining organs like the intestines and kidneys build a special surface called the "brush border," which consists of a dense array of finger-like protrusions.