Figure S5. Structure of the Slug/PIASy/Ubc9/SUMO-1 complex. (a) Schematic showing the regions of Slug that interact with PIASy, Ubc9, and SUMO. Slug is 268 amino acids in length and contains a SNAG repression domain at its N-terminus and five zinc finger (ZnF) domains at its C-terminus. ND means no detection. (b) A 3D structure of Slug/PIASy/Ubc9/SUMO-1 complex was generated using prediction software (orange, Slug; purple, PIASy; green, Ubc9; gray, SUMO-1). A rotated view of this complex is shown in the lower panel. (PDF 127 kb)