The control of the intracellular localization of NCS (neuronal calcium sensor) proteins is of importance for their ability to respond appropriately to differing calcium signals. We examine the localization of three NCS proteins: NCS-1, KChIP-1 (potassium-channel-interacting protein 1) and hippocalcin. Additionally, the [Ca2+] dependency of the calcium-induced translocation of hippocalcin is investigated. The implications of the differential targeting of these proteins on calcium signal interpretation are considered.

Keywords:
hippocalcin, intracellular targeting, myristoylation, neuronal calcium sensor-1 (NCS-1), potassium-channel-interacting protein 1 (KChIP-1), recoverin
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© 2003 Biochemical Society
2003
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