Figure 1.
Nup93 forms two distinct complexes. (A) Immunoprecipitations were performed from Xenopus egg cytosol with antibodies against Nup188 (two antibodies raised in different rabbits), Nup93, Nup205, Nup155, and Nup53 and, as a control, Nup98. The indicated proteins were identified by Western blotting with the respective antisera. 10% of starting material (input) was loaded on the left. (B) Quantitative immunoprecipitations were performed from limited amounts of Xenopus egg cytosol with antibodies against Nup188, Nup93, and Nup205 and, as a control, Nup98. Immunoprecipitates and unbound material as well as 10, 30, and 100% of the starting material (input) were analyzed by Western blotting. The Nup93 antibody also recognized a cross-reactivity (asterisk) in the starting and unbound material migrating slightly slower.