Research


We are interested in how cells regulate the intracellular calcium concentration. Cells use changes in calcium as a trigger for many cellular events, including muscle contraction, hormone secretion, and cell growth.  The change in calcium levels can be modulated by the cell to tailor its response to the prevailing conditions. We have focused on one aspect of this process, the release of calcium from intracellular stores. We use biophysical, molecular and biochemical techniques to study the classes of calcium release channels known to exist inside virtually all cells the InsP3-gated channel, the ryanodine receptor/channel, and polycystin-2.


Our goal is to understand how the functions of these channels are altered by processes within the cell.  The knowledge of how these channels work will form the background for studies of disease-induced changes in calcium release channel function.


Click on the receptor model image for more information about our related projects.


See our papers in PDF format.


Projects

A.

Intracellular channels


InsP3 Receptor

Ryanodine Receptor

Polycystin-2


B.

Regulation of calcium signals


The effects of protein-protein interactions

NCS-1

Chromogranin B

Polycystin 2


The effects of subcellular localization

Nucleus vs cytoplasm

Parvalbumin

Testosterone

InsP3R isoform


Neurite vs soma

InsP3R isoform

Chromogranin B


The effects of enzyme activity

SHP-2

Glycosylation




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