The nucleoporins Nup58 and Nup45 are part of the central transport channel of the nuclear pore complex, which is thought to have a flexible diameter. (science.sciencemag.org)
In their Perspective, Knepper and Agre discuss an exciting study (Khademi et al.) that reports resolution of the crystallographic structure of a bacterial ammonia transport channel, AmtB, to an astonishing 1.35 angstroms, an amazing feat for an integral membrane protein. (science.sciencemag.org)
The Majorana particles result in transport channels (shown in red, pink, blue and yellow) in the electronic device. (innovationtoronto.com)