Figure 11.

(A) Three-conformer ensembles for K29-Ub₂ (continued in ESI). Numbers below the structures indicate the population weight of each conformer in the ensemble. Structure rendering throughout this figure is as described in Figure 1, the isopeptide-linked K29 is shown in red sticks. (B) Crystal structures of K29-Ub₂, unbound (right) and in complex with TRABID NZF1 (left, NZF1 is shown as green ribbon) (C) Overlay of the crystal structures (pink) from B with the major conformer of the cyan ensemble (left), and with the minor conformer of the cyan ensemble (right). The arrow shows the rotation of the proximal Ub that superimposes it with the crystal structure. (D) Agreement between experimental (black circles) and predicted SANS profiles for the 3-conformer ensembles (left, lines color coded as in panel A) and for the crystal structure PDB 4S22 (right).