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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Doublecortin kinase-2, a novel doublecortin-related protein kinase associated with terminal segments of axons and dendrites.

The microtubule (MT)-associated DCX protein plays an essential role in the development of the mammalian cerebral cortex. We report on the identification of a protein kinase, doublecortin kinase-2 (DCK2), with a domain (DC) highly homologous to DCX. DCK2 has MT binding activity associated with its DC domain and protein kinase activity mediated by a kinase domain, organized in a structure in which the two domains are functionally independent. Overexpression of DCK2 stabilizes the MT cytoskeleton against cold-induced depolymerization. Autophosphorylation of DCK2 strongly reduces its affinity for MTs. DCK2 and DCX mRNAs are nervous system-specific and are expressed during the period of cerebrocortical lamination. DCX is down-regulated postnatally, whereas DCK2 persists in abundance into adulthood, suggesting that the DC sequence has previously unrecognized functions in the mature nervous system. In sympathetic neurons, DCK2 is localized to the cell body and to the terminal segments of axons and dendrites. DCK2 may represent a phosphorylation-dependent switch for the reversible control of MT dynamics in the vicinity of neuronal growth cones.[1]

References

  1. Doublecortin kinase-2, a novel doublecortin-related protein kinase associated with terminal segments of axons and dendrites. Edelman, A.M., Kim, W.Y., Higgins, D., Goldstein, E.G., Oberdoerster, M., Sigurdson, W. J. Biol. Chem. (2005) [Pubmed]
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