FUS and neurodegenerative disease: Liquid condensate can be produced by the intrinsically disordered SARS-CoV-2 nucleocapsid protein, which can even create harmful heteropolymers with RNA-binding proteins associated with neurodegenerative disease, such as TDP-43, fused-in sarcoma (FUS), and heterogeneous nuclear ribonucleoprotein A1 (hnRNP1A).