Video 3. Dissociation pathway of the dUBC13/TRAF6^RING native complex observed by steered MD.

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The movie shows the order of contact disruption during enforced dissociation of TRAF6^RING from dUBC13 (Figure 5D–F, Figure 5—figure supplement 1B). The R14-E69 salt-bridge is lost within ~ 3 ns due to competition with E100. Loss of S96-P106 and hydrophobic interactions occur by ~11 ns. The R14-E100 intramolecular salt-bridge persists even after dissociation of the complex. Residues R6/R14/S96/E100 in UBC13 (Green) and D57/E69/P106 in TRAF6^RING (Blue) are shown in stick representation. A black, dashed-line is drawn between R14 (Cζ) and E100 (Cδ) which indicates the presence/absence of an intramolecular salt-bridge depending on the length of the line.