Facilitates ubiquitin-independent proteasomal degradation of polycomb protein Pc by interacting directly with the proteasome and recruiting Pc to it. Interacts with PRC1 complex member polycomb protein Pc; the interaction targets Pc for ubiquitin-independent proteasomal degradation. Does not interact with PRC1 members Ph, Psc or Sce so does not appear to be a member of the PRC1 complex. Interacts with 26S proteasome regulatory subunit Rpn10. The ubiquitin-like domain is required for Pc degradation. Homozygous and hemizygous lethal at the pupal stage. Hemizygous escapers display haltere-to-wing and metathoracic-to-mesothoracic leg transformations and die as pharate adults. The name 'stuxnet' derives from a computer (PC) virus of the same name, due to the role of the protein in promoting Pc protein degradation in the proteasome.