The neuronal calcium-sensor proteins

  • D. Burgoyne R
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Abstract

Changes in intracellular free Ca2+concentration ([Ca2+]i) affect many different aspects of neuronal function ranging from millisecond regulation of ion channels to long term changes in gene expression. These effects of Ca2+are transduced by Ca2+-binding proteins that act as Ca2+sensors by binding Ca2+, undergoing a conformational change and then modifying the function of additional target proteins. Mammalian species express 14 members of the neuronal calcium sensor (NCS) family of EF hand-containing Ca2+-binding proteins which are expressed mainly in photoreceptor cells or neurons. Many of the NCS proteins are membrane targeted through their N-terminal myristoylation either constitutively or following exposure of the myristoyl group after Ca2+binding (the Ca2+/myristoyl switch). The NCS proteins have been implicated in a wide range of functional roles in neuronal regulation, several of which have been confirmed though molecular genetic analyses. © 2004 Elsevier B.V. All rights reserved.

Author-supplied keywords

  • Calcium
  • Hippocalcin
  • KChIP
  • NCS-1
  • Neurocalcin
  • VILIP

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Authors

  • Robert D. Burgoyne

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