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Postsynaptic density scaffolding protein. Binds and cross-links cytoplasmic regions of GRM1, GRM5, ITPR1, DNM3, RYR1, RYR2, SHANK1 and SHANK3. By physically linking GRM1 and GRM5 with ER-associated ITPR1 receptors, it aids the coupling of surface receptors to intracellular calcium release. May also couple GRM1 to PI3 kinase through its interaction with AGAP2. Isoform 1 regulates the trafficking and surface expression of GRM5. Isoform 3 acts as a natural dominant negative, in dynamic competition with constitutively expressed isoform 1 to regulate synaptic metabotropic glutamate function. Isoform 3, may be involved in the structural changes that occur at synapses during long-lasting neuronal plasticity and development.
Gene Name: | homer homolog 1 (Drosophila) |
Synonyms: | HOMER1, HOMER, Homer homolog 1 (Drosophila), Homer protein homolog 1, HOMER1B, SYN47, Ves-1, Homer-1, HOMER-1B, HOMER1A, HOMER1C |
Target Sequences: | NM_004272 NP_004263.1 Q86YM7 |
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