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. 2011 Dec 22;287(7):4740–4751. doi: 10.1074/jbc.M111.321141

FIGURE 6.

FIGURE 6.

SUMO/SIM interactions in RanGAP1-SUMO/UBC9/RanBP2 complexes. A–D, ribbon and stick representation of interactions between RanBP2 SIM and motif II with SUMO and UBC9 in RanGAP1-SUMO1/UBC9/IR1 (A; PDB 1Z5S), RanGAP1-SUMO2/UBC9/IR1 (B), RanGAP1-SUMO1/UBC9/IR1SIM-IR2II-IR1III–V (C), and RanGAP1-SUMO2/UBC9/IR1SIM-IR2II-IR1III–V (D). SUMO β-strand 2 and SUMO α-helix 1 are colored yellow and green for SUMO1 and SUMO2, respectively. The IR1 SIM and motif II, IR2 motif II, and UBC9 are colored magenta, pink, and blue, respectively. Hydrogen bonding interactions are indicated by dashed lines. E and F, close-up view of hydrogen bonds between SUMO and the IR1 SIM for RanGAP1-SUMO1/UBC9/IR1SIM-IR2II-IR1III–V (E) and RanGAP1-SUMO2/UBC9/IR1SIM-IR2II-IR1III–V (F).