Gerald Crabtree

Publication Details

• Nuclear export of NF-ATc enhanced by glycogen synthase kinase-3.

  Beals CR, Sheridan CM, Turck CW, Gardner P, Crabtree GR. Science. 1997; 275 (5308): 1930-4

  The transcription factor NF-AT responds to Ca2+-calcineurin signals by translocating to the nucleus, where it participates in the activation of early immune response genes. Calcineurin dephosphorylates conserved serine residues in the amino terminus of NF-AT, resulting in nuclear import. Purification of the NF-AT kinase revealed that it is composed of a priming kinase activity and glycogen synthase kinase-3 (GSK-3). GSK-3 phosphorylates conserved serines necessary for nuclear export, promotes nuclear exit, and thereby opposes Ca2+-calcineurin signaling. Because GSK-3 responds to signals initiated by Wnt and other ligands, NF-AT family members could be effectors of these pathways.

  PubMedID: 9072970