InnateDB: Systems Biology of the Innate Immune Response

Homo sapiens Protein: GRIA2

Summary

InnateDB Protein

IDBP-42637.6

Last Modified

2014-10-13 [Report errors or provide feedback]

Gene Symbol

GRIA2

Protein Name

glutamate receptor, ionotropic, AMPA 2

Synonyms

GluA2; GluR-K2; GLUR2; GLURB; HBGR2;

Species

Homo sapiens

Ensembl Protein

ENSP00000264426

InnateDB Gene

IDBG-42633 (GRIA2)

Protein Structure

UniProt Annotation

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. {ECO:0000269PubMed:20614889}.

Subcellular Localization

Cell membrane {ECO:0000269PubMed:23739980}; Multi-pass membrane protein {ECO:0000269PubMed:23739980}. Endoplasmic reticulum membrane {ECO:0000250}; Multi-pass membrane protein {ECO:0000250}. Cell junction, synapse, postsynaptic cell membrane {ECO:0000269PubMed:23739980}; Multi-pass membrane protein {ECO:0000269PubMed:23739980}. Note=Interaction with CACNG2, CNIH2 and CNIH3 promotes cell surface expression. {ECO:0000250}.

Disease Associations

Tissue Specificity

Comments

Interactions

Number of Interactions

This gene and/or its encoded proteins are associated with 20 experimentally validated interaction(s) in this database.
They are also associated with 3 interaction(s) predicted by orthology.

Experimentally validated
Total	20 [view]
Protein-Protein	20 [view]
Protein-DNA	0
Protein-RNA	0
DNA-DNA	0
RNA-RNA	0
DNA-RNA	0

Predicted by orthology
Total	3 [view]

Gene Ontology

Molecular Function

Accession	GO Term
GO:0004970	ionotropic glutamate receptor activity
GO:0004971	alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionate selective glutamate receptor activity
GO:0005215	transporter activity
GO:0005234	extracellular-glutamate-gated ion channel activity
GO:0005515	protein binding

Biological Process

GO:0006810	transport
GO:0007165	signal transduction
GO:0007268	synaptic transmission
GO:0034220	ion transmembrane transport
GO:0035235	ionotropic glutamate receptor signaling pathway
GO:0035249	synaptic transmission, glutamatergic

Cellular Component

GO:0005789	endoplasmic reticulum membrane
GO:0005886	plasma membrane
GO:0005887	integral component of plasma membrane
GO:0016020	membrane
GO:0030054	cell junction
GO:0030425	dendrite
GO:0030666	endocytic vesicle membrane
GO:0032281	alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid selective glutamate receptor complex
GO:0045211	postsynaptic membrane

Protein Structure and Domains

PDB ID

InterPro

IPR001320 Ionotropic glutamate receptor
IPR001508 NMDA receptor
IPR001638 Extracellular solute-binding protein, family 3
IPR001828 Extracellular ligand-binding receptor
IPR019594 Glutamate receptor, L-glutamate/glycine-binding
IPR028082 Periplasmic binding protein-like I

PFAM

PF00060
PF00497
PF01094
PF10613

PRINTS

PR00177

PIRSF

SMART

SM00079
SM00062
SM00918

TIGRFAMs

Post-translational Modifications

Modification

Cross-References

SwissProt