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 ...

Nuclear pore complexes provide channels for molecular transport across the nuclear envelope. Translocation of most proteins and RNAs through the pore complex is mediated by signal- and ATP-dependent ...

Measurements have been made of the electrical potential difference between the exuding sap of detopped castor-oil plants and a nutrient solution bathing the roots. The initial concentrations of the ...

According to a new theoretical model, in cell protrusions and cargo-transporting motor proteins often get in each other's way. The upshot is that freely diffusing proteins reach the leading edge ...