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. 2014 Jul 1;3(3):674–689. doi: 10.3390/cells3030674

Figure 3.

Different conformations of di-Ub structures.

Figure 3

(A) Crystal structures of the extended conformations adopted by K63-linked (left, PDB: 2JF5), and head-to-tail N-terminal methionine (right, PDB: 2W9N) di-Ub chain structures [39]. (B) The K11-linked di-Ub complex has 2 distinct compact conformations mediated by α-helix interactions (left, PDB: 2XEW) [45] or through interaction of the I36 hydrophobic surface patch (orange spheres) on proximal (blue) and distal (green) Ubs (right, PDB: 3NOB) [46].