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 ...

Biochemists found that as active transporters in cell membranes undergo conformational changes to allow their main substrates to pass through through, small molecules like water slip through as well.

The permeability of biological membranes is a key determinant of drug pharmacokinetics. Historically, passive diffusion through the lipid bilayer portion of a biological membrane was suggested as the ...