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Comparison of nucleoporin-binding abilities of TAP, Mex67, Mtr2 and NTF2. The structural region corresponding to the Phe-Gly (FG)-binding site of TAP (A) is shown for Mex67 (B) and Mtr2 (C). The FxFG binding pocket of yeast NTF2 N77Y is shown in (D).
