| Predicate | Object |
|---|---|
| rdf:type | |
| biopax3:comment |
FUNCTION: Receptor for glutamate that functions as ligand-gated ion channel in the central nervous system and plays an important role in excitatory synaptic transmission. L-glutamate acts as an excitatory neurotransmitter at many synapses in the central nervous system. Binding of the excitatory neurotransmitter L- glutamate induces a conformation change, leading to the opening of the cation channel, and thereby converts the chemical signal to an electrical impulse. The receptor then desensitizes rapidly and enters a transient inactive state, characterized by the presence of bound agonist. In the presence of CACNG4 or CACNG7 or CACNG8, shows resensitization which is characterized by a delayed accumulation of current flux upon continued application of glutamate. SUBUNIT: Homotetramer or heterotetramer of pore-forming glutamate receptor subunits. Tetramers may be formed by the dimerization of dimers. May interact with MPP4. Forms a ternary complex with GRIP1 and CSPG4 (By similarity). Interacts with ATAD1 in an ATP- dependent manner. ATAD1-catalyzed ATP hydrolysis disrupts binding to ATAD1 and to GRIP1 and leads to AMPAR complex disassembly. Interacts with NSF via its C-terminus. Interacts with CACNG2, PRKCABP and GRIP2. Part of a complex containing GRIA2, NSF and NAPA and/or NAPB. Interacts with PICK1 (via PDZ domain) (By similarity). Interacts with GRIA1 and SYNDIG1 (By similarity). Interacts with LRFN1. Found in a complex with GRIA3, GRIA4, CNIH2, CNIH3, CACNG2, CACNG3, CACNG4, CACNG5, CACNG7 and CACNG8. Interacts with CACNG5. SUBCELLULAR LOCATION: Cell membrane; Multi-pass membrane protein. Endoplasmic reticulum membrane; Multi-pass membrane protein. Cell junction, synapse, postsynaptic cell membrane; Multi-pass membrane protein. Note=Interaction with CACNG2, CNIH2 and CNIH3 promotes cell surface expression. ALTERNATIVE PRODUCTS: Event=Alternative splicing; Named isoforms=3; Name=Flop; IsoId=P19491-1; Sequence=Displayed; Name=Flip; IsoId=P19491-2; Sequence=VSP_000111, VSP_000112, VSP_000113, VSP_000114; Name=3; Synonyms=Long; IsoId=P19491-3; Sequence=VSP_029310; TISSUE SPECIFICITY: Detected in forebrain. Detected in dendrites of neuronal cells. DEVELOPMENTAL STAGE: Detected at low levels in newborns. Levels increase strongly and are highest in hippocampus from 8 to 14 day old animals. Detected at intermediate levels at day 42 (at protein level). PTM: Palmitoylated. Depalmitoylated upon glutamate stimulation. Cys-610 palmitoylation leads to Golgi retention and decreased cell surface expression. In contrast, Cys-836 palmitoylation does not affect cell surface expression but regulates stimulation-dependent endocytosis (By similarity). RNA EDITING: Modified_positions=607; Note=Fully edited in the brain. Heteromerically expressed edited GLUR2 (R) receptor complexes are impermeable to calcium, whereas the unedited (Q) forms are highly permeable to divalent ions (By similarity). MISCELLANEOUS: The postsynaptic actions of Glu are mediated by a variety of receptors that are named according to their selective agonists. This receptor binds AMPA (quisqualate) > glutamate > kainate. SIMILARITY: Belongs to the glutamate-gated ion channel (TC 1.A.10.1) family. GRIA2 subfamily. GENE SYNONYMS:Gria2 Glur2. COPYRIGHT: Protein annotation is derived from the UniProt Consortium (http://www.uniprot.org/). Distributed under the Creative Commons Attribution-NoDerivs License.,
SEQUENCE 883 AA; 98688 MW; DEFA817027C1CCD1 CRC64;
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| biopax3:xref | |
| biopax3:displayName |
GRIA2_RAT
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| biopax3:name |
AMPA-selective glutamate receptor 2,
GluA2,
GluR-2,
GluR-B,
GluR-K2,
Glutamate receptor ionotropic, AMPA 2,
Gria2
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| biopax3:entityFeature | |
| biopax3:organism | |
| biopax3:sequence |
MQKIMHISVLLSPVLWGLIFGVSSNSIQIGGLFPRGADQEYSAFRVGMVQFSTSEFRLTPHIDNLEVANSFAVTNAFCSQFSRGVYAIFGFYDKKSVNTITSFCGTLHVSFITPSFPTDGTHPFVIQMRPDLKGALLSLIEYYQWDKFAYLYDSDRGLSTLQAVLDSAAEKKWQVTAINVGNINNDKKDETYRSLFQDLELKKERRVILDCERDKVNDIVDQVITIGKHVKGYHYIIANLGFTDGDLLKIQFGGANVSGFQIVDYDDSLVSKFIERWSTLEEKEYPGAHTATIKYTSALTYDAVQVMTEAFRNLRKQRIEISRRGNAGDCLANPAVPWGQGVEIERALKQVQVEGLSGNIKFDQNGKRINYTINIMELKTNGPRKIGYWSEVDKMVVTLTELPSGNDTSGLENKTVVVTTILESPYVMMKKNHEMLEGNERYEGYCVDLAAEIAKHCGFKYKLTIVGDGKYGARDADTKIWNGMVGELVYGKADIAIAPLTITLVREEVIDFSKPFMSLGISIMIKKPQKSKPGVFSFLDPLAYEIWMCIVFAYIGVSVVLFLVSRFSPYEWHTEEFEDGRETQSSESTNEFGIFNSLWFSLGAFMQQGCDISPRSLSGRIVGGVWWFFTLIIISSYTANLAAFLTVERMVSPIESAEDLSKQTEIAYGTLDSGSTKEFFRRSKIAVFDKMWTYMRSAEPSVFVRTTAEGVARVRKSKGKYAYLLESTMNEYIEQRKPCDTMKVGGNLDSKGYGIATPKGSSLGNAVNLAVLKLNEQGLLDKLKNKWWYDKGECGSGGGDSKEKTSALSLSNVAGVFYILVGGLGLAMLVALIEFCYKSRAEAKRMKVAKNPQNINPSSSQNSQNFATYKEGYNVYGIESVKI
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| biopax3:standardName |
Glutamate receptor 2
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