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GRIN2A

This gene encodes a member of the glutamate-gated ion channel protein family. The encoded protein is an N-methyl-D-aspartate (NMDA) receptor subunit. NMDA receptors are both ligand-gated and voltage-dependent, and are involved in long-term potentiation, an activity-dependent increase in the efficiency of synaptic transmission thought to underlie certain kinds of memory and learning. These receptors are permeable to calcium ions, and activation results in a calcium influx into post-synaptic cells, which results in the activation of several signaling cascades. Disruption of this gene is associated with focal epilepsy and speech disorder with or without cognitive disability. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]
Protein class

Cancer-related genes, Disease related genes, FDA approved drug targets, Human disease related genes, Plasma proteins, RAS pathway related proteins, Transporters

Predicted location

Intracellular, Membrane (different isoforms)

Single cell type specificity

Group enriched (Inhibitory neurons, Excitatory neurons)

Immune cell specificity

Not detected in immune cells

Cell line specificity

Cell line enhanced (BJ hTERT+ SV40 Large T+ RasG12V, fHDF/TERT166, hTERT-RPE1, RPMI-8226, U-138 MG)

Interaction

Heterotetramer. Forms heterotetrameric channels composed of two zeta subunits (GRIN1), and two epsilon subunits (GRIN2A, GRIN2B, GRIN2C or GRIN2D) (in vitro) (PubMed:8768735, PubMed:26919761, PubMed:26875626, PubMed:28105280). Can also form heterotetrameric channels that contain at least one zeta subunit (GRIN1), at least one epsilon subunit, plus GRIN3A or GRIN3B. In vivo, the subunit composition may depend on the expression levels of the different subunits. Found in a complex with GRIN1, GRIN3A and PPP2CB (By similarity). Found in a complex with GRIN1 and GRIN3B (By similarity). Interacts with AIP1 (By similarity). Interacts with HIP1 and NETO1. Interacts with SNX27 (via PDZ domain); the interaction is required for recycling to the plasma membrane when endocytosed and prevent degradation in lysosomes (By similarity). Interacts with PDZ domains of PATJ and DLG4. Interacts with LRFN2 (By similarity). Interacts with RPH3A and DLG4; this ternary complex regulates NMDA receptor composition at postsynaptic membranes (By similarity). Interacts with SORCS2 (By similarity). Interacts with ARC; preventing ARC oligomerization (By similarity).

Molecular function

Ion channel, Ligand-gated ion channel, Receptor

More Types Infomation

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