Importins release cargo upon binding to RanGTP , while exportins must bind RanGTP to form a ternary complex with their export cargo .
In its GDP bound state , Ran is capable of binding karyopherins ( importins and exportins ) .
Importins release cargo upon binding to Ran , while exportins must bind Ran to form a ternary complex with their export cargo .
In its GDP bound state , Ran is capable of binding karyopherins ( importins and exportins ) .