540 Chemie und zugeordnete Wissenschaften
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P2X receptors are ligand (ATP)-gated ion channels that open an intrinsic cation permeable pathway in response to extracellular ATP released from both neuronal and non-neuronal cells. P2X receptors are abundantly distributed and mediate a wide variety of physiological functions, ranging from fast synaptic transmission in the central, peripheral, and enteric nervous system, to proinflammatory cytokine release from immune cells. The primary aim of this work was to elucidate the pathway that leads to the finally assembled trimeric P2X receptors, including the assessment of a possible role of ER chaperones and folding factors in this process. Additionally, the study was conducted to investigate the various ER quality control processes involved in the selection of “properly folded and assembled” P2X receptors that are suitable for the surface expression.