Differential affinity purification and mass spectrometry analysis of two nuclear pore complex isoforms in yeast...

Two isoforms of the nuclear pore complex (NPC) have been identified in the yeast S. cerevisiae, which coexist at the periphery of the nucleus and differ by the presence or absence of a nuclear basket. Here, we present a protocol to isolate the two types of NPCs from the same cell extract and dissect their interactomes. We describe steps for powder preparation and magnetic bead conjunction and detail differential affinity purification and outcome evaluation through SDS-PAGE, silver staining, and mass spectrometry analysis. For complete details on the use and execution of this protocol, please refer to Bensidoun et al.¹.