Interaction of S-SCAM with neural plakophilin-related Armadillo-repeat protein/delta-catenin |
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Authors: | Ide N Hata Y Deguchi M Hirao K Yao I Takai Y |
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Institution: | Takai Biotimer Project, ERATO, Japan Science and Technology Corporation, c/o JCR Pharmaceuticals Co. Ltd., Kobe, 651-2241, Japan. |
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Abstract: | Synaptic scaffolding molecule (S-SCAM) is a multiple PDZ domain-containing protein, which interacts with neuroligin, a cell adhesion molecule, and the NMDA receptor. In this study, we searched for S-SCAM-interacting proteins and obtained a neuralplakophilin-related armadillo-repeat protein (NPRAP)/delta-catenin. NPRAP/delta-catenin bound to the last PDZ domain of S-SCAM via its carboxyl-terminus in three different cell-free assay systems, was coimmunoprecipitated with S-SCAM from rat crude synaptosomes, and was localized at the excitatory synapses in rat hippocampal neurons. NPRAP/delta-catenin may be implicated in the molecular organization of synaptic junctions through the interaction with S-SCAM. |
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