Disentangling polydispersity in the PCNA-p15PAF complex, a disordered, transient and multivalent macromolecular assembly.

We gratefully acknowledge the use of the European Molecular Biology Laboratory BioSAXS X33 and P12 beamlines at DESY Hamburg and also the GWDG computing cluster for SAXS-profile calculations of PCNA–p15 ensembles. We acknowledge supercomputing facilities from the Catalan CSUC.