MYC and neuroblastoma: To investigate whether phosphorylation by CK1δ or CK1ε alters the subcellular localization of FUS, we cotransfected HEK293 and human neuroblastoma SH-SY5Y cells with FLAG-tagged FUSwt or FUS P525L, together with myc-tagged CK1δ, CK1ε, or CK1α1.