Defying one of biology’s more persistent dogmas, a potassium channel combines functions once thought to be invariably asunder. This channel, which is found in common bacteria, incorporates a subunit ...

For decades it was assumed that protein channels and protein pumps fulfilled completely different functions and worked independently of each other. Researchers have now elucidated the transport path ...

SODIUM and potassium concentrations in human red cells are controlled by the sodium pump, and if passive leaks exceed rates of active transport cells undergo colloid osmotic haemolysis. Because the ...