Movie S1.

Reference-free 2D averages of negatively stained, single-particle EM images. RECQ1 exists as a heterogeneous population that contains apparent dimers, trimers, and tetramers.

Human RECQ1 helicase-driven DNA unwinding, annealing, and branch migration: Insights from DNA complex structures

Ashley C. W. Pike, Shivasankari Gomathinayagam, Paolo Swuec, Matteo Berti, Ying Zhang, Christina Schnecke, Francesca Marino, Frank von Delft, Ludovic Renault, Alessandro Costa, Opher Gileadi, and Alessandro Vindigni

PNAS. 2015. 112:4286-4291 DOI: 10.1073/pnas.1417594112