Interaction of wild-type and E1-Ran with p10,
assayed by His*Tag resin binding. His*Tag-wild-type Ran (predominantly
nucleotide free, see MATERIALS AND METHODS), His*Tag-wild-type
Ran·GDP, and His*Tag-E1-Ran·GDP, bound to Ni2+ resin,
were incubated with p10, and the amounts of the latter bound to the
resin were determined as described in MATERIALS AND METHODS. Mobility
of a size marker is indicated on the left and mobility of p10 on the
right. B, bound p10; U, unbound p10.