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

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WFS1 protein modulates the free Ca(2+) concentration in the endoplasmic reticulum.

The WFS1 gene, encoding an endoplasmic reticulum (ER) membrane glycoprotein, is mutated in Wolfram syndrome characterized by diabetes mellitus and optic atrophy. Herein, Ca(2+) dynamics were examined in WFS1-knockdown and -overexpressing HEK293 cells. Studies using ER-targeted Ca(2+)-sensitive photoprotein aequorin demonstrated WFS1 protein to positively modulate ER Ca(2+) levels by increasing the rate of Ca(2+) uptake. Furthermore, Ca(2+) imaging with Fura-2 showed the magnitude of the store-operated Ca(2+) entry to parallel WFS1 expression levels. These data indicate that WFS1 protein participates in the regulation of cellular Ca(2+) homeostasis, at least partly, by modulating the filling state of the ER Ca(2+) store.[1]

References

  1. WFS1 protein modulates the free Ca(2+) concentration in the endoplasmic reticulum. Takei, D., Ishihara, H., Yamaguchi, S., Yamada, T., Tamura, A., Katagiri, H., Maruyama, Y., Oka, Y. FEBS Lett. (2006) [Pubmed]
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