2011年5月
Inositol 1, 4, 5-trisphosphate receptor interacts with the SNARE domain of syntaxin 1B
JOURNAL OF PHYSIOLOGICAL SCIENCES
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- 巻
- 61
- 号
- 3
- 開始ページ
- 221
- 終了ページ
- 229
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s12576-011-0140-4
- 出版者・発行元
- SPRINGER JAPAN KK
Inositol 1, 4, 5-trisphosphate receptors (IP(3)Rs) are intracellular ligand-gated Ca2+ channels that mediate Ca2+ release from the endoplasmic reticulum (ER) into the cytosol and function in diverse cellular processes including fertilization, muscle contraction, apoptosis, secretion, and synaptic plasticity. The Ca2+ release activity of IP(3)Rs is tightly regulated by many factors including IP3R-binding proteins. We show that IP(3)Rs interact with syntaxin 1 (Syx1), a membrane trafficking protein that regulates various plasma-membrane ion channels including N-, P/Q, and L-type voltage-gated Ca2+ channels, voltage-gated potassium channels, and an epithelial sodium channel. We found that a SNARE-domain of Syx1B, one of the two Syx1 isoforms, directly interacted with the type1 IP3R (IP(3)R1) internal coupling domain, a known modulator for channel opening. These results indicate that Syx1B is an IP3R-interacting protein and that its interaction may play a crucial role in regulating the channel activity of IP3Rs in Syx1B-expressing cells.
- リンク情報
- ID情報
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- DOI : 10.1007/s12576-011-0140-4
- ISSN : 1880-6546
- eISSN : 1880-6562
- PubMed ID : 21424589
- Web of Science ID : WOS:000289858800007