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Structural model of snRNA export. Schematic representation of the quaternary structure of the snRNA export with CRM1-RAN-GTP complex (PDB 3GJX), stem I of U2 snRNA (PDB 2O32), nuclear cap binding complex (CBC 80 + 20) in complex with a cap analog m7GpppG (PDB 1H2T) and the human PHAX-RBD (PDB 2KC7).
