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  • Title: Structural insights into the regulatory mechanism of IP3 receptor.
    Author: Bosanac I, Michikawa T, Mikoshiba K, Ikura M.
    Journal: Biochim Biophys Acta; 2004 Dec 06; 1742(1-3):89-102. PubMed ID: 15590059.
    Abstract:
    Inositol 1,4,5-trisphosphate receptors (IP(3)R) are intracellular Ca(2+) release channels whose opening requires binding of two intracellular messengers IP(3) and Ca(2+). The regulation of IP(3)R function has also been shown to involve a variety of cellular proteins. Recent biochemical and structural analyses have deepened our understanding of how the IP(3)-operated Ca(2+) channel functions. Specifically, the atomic resolution structure of the IP(3)-binding region has provided a sound structural basis for the receptor interaction with the natural ligand. Electron microscopic studies have also shed light on the overall shape of the tetrameric receptor. This review aims to provide comprehensive overview of the current information available on the structure and function relationship of IP(3)R.
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