microtubules are hollow cylinders consisting of tubulin, a heterodimer of α- and β-tubulin. In vivo microtubules are composed of 13 tubulin protofilaments, strings of consecutive αβ–αβ tubulin ...
Ran-mediated GTP hydrolysis is thought to be the main driving force behind cargo transport across the nuclear pore complex. The location of the Ran-specific guanine nucleotide exchange factor RCC1 in ...