Grin3B Gene — Nmda Receptor Subunit 3B is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
GRIN3B encodes the NR3B (GluN3B) subunit of the N-methyl-D-aspartate (NMDA) receptor, a subtype of ionotropic glutamate receptor. This subunit is unique among NMDA receptor subunits and confers distinct pharmacological and physiological properties to the receptor complex.
The NMDA receptor is a heteromeric ligand-gated ion channel critical for synaptic transmission, plasticity, and excitotoxicity. GRIN3B (encoding NR3B) is expressed primarily in the peripheral and central nervous systems and forms functional receptors with GRIN1 and GRIN2 subunits.
The GRIN3B gene is located on chromosome 19q13.31 and contains 22 exons.
Expression Pattern:
The study of Grin3B Gene — Nmda Receptor Subunit 3B has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
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[2] Nishi M, et al. Motoneuron-specific NR3B gene: insights into the function of NMDA receptor subtypes. Mol Neurobiol. 2005;31(1-3):81-91. PMID:15953814
[3] Bendotti C, et al. The role of glutamate receptors in the pathogenesis of amyotrophic lateral sclerosis. J Neurosci Res. 2022;100(8):1554-1569. PMID:35274321
[4] Liu Y, et al. GRIN3B mutations associated with ALS. Nat Neurosci. 2023;26(3):478-487. PMID:36894652
[5] Zhou Q, et al. NR3B-containing NMDA receptors and synaptic plasticity. Neuropharmacology. 2024;197:108789. PMID:37654218