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. 2001 Dec;65(4):570–594. doi: 10.1128/MMBR.65.4.570-594.2001

FIG. 6.

FIG. 6

Structures of the RanGEF RCC1 (A) and of RanGAP (B). (A) The first 20 amino acids, containing the NLS, are absent. (B) The arginine finger residue is indicated. This residue is required for catalytic activity (93, 202).