Slob, a novel protein that interacts with the slowpoke calcium-dependent potassium channel

W. Michael Schopperle, Mats H. Holmqvist, Yi Zhou, Jing Wang, Zheng Wang, Leslie C. Griffith, Inna Keselman, Felicity Kusinitz, Daniel Dagan, Irwin B. Levitan

Research output: Contribution to journalArticle

96 Scopus citations

Abstract

Slob, a novel protein that binds to the carboxy-terminal domain of the Drosophila Slowpoke (dSIo) calcium-dependent potassium channel, was identified with a yeast two-hybrid screen. Slob and dSIo coimmunoprecipitate from Drosophila heads and heterologous host cells, suggesting that they interact in vivo. Slob also coimmunoprecipitates with the Drosophila FAG potassium channel but not with Drosophila Shaker, mouse Slowpoke, or rat K(v)l.3. Confocal fluorescence microscopy demonstrates that Slob and dSIo redistribute in cotransfected cells and are colocalized in large intracellular structures. Direct application of Slob to the cytoplasmic face of detached membrane patches containing dSIo channels leads to an increase in channel activity. Slob may represent a new class of multi-functional channel- binding proteins.

Original languageEnglish (US)
Pages (from-to)565-573
Number of pages9
JournalNeuron
Volume20
Issue number3
DOIs
StatePublished - Jan 1 1998
Externally publishedYes

ASJC Scopus subject areas

  • Neuroscience(all)

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    Schopperle, W. M., Holmqvist, M. H., Zhou, Y., Wang, J., Wang, Z., Griffith, L. C., Keselman, I., Kusinitz, F., Dagan, D., & Levitan, I. B. (1998). Slob, a novel protein that interacts with the slowpoke calcium-dependent potassium channel. Neuron, 20(3), 565-573. https://doi.org/10.1016/S0896-6273(00)80995-2