In this set of experiments we identified the main scaffolding component of centriolar satellites, PCM1 or Cmb in Drosophila as a proximity interactor of the centriolar structural protein Sas4 by BioID in S2 cells and subsequently explored the Cmb proximity interactome by direct TurboID in S2 cells and indirect, GFP nanobody-targeted, TurboID in Drosophila testes.