Bacteria and yeast need to prevent leakage of numerous small molecules through their cell membrane. Biochemists have studied how the composition of the membrane affects passive diffusion and the ...

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 ...

Cells continuously move materials in and out through their cell walls. Facilitated transport is one way of moving those materials without expending cellular energy. In facilitated transport, materials ...