Nrxn3 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
{{Infobox gene
|name=Neurexin 3
|symbol=NRXN3
|alias=Neurexin III, NRXN3
|chromosome=14
|location=14q31.1
|gene_id=9369
|omim=600571
|ensembl=ENSG00000156298
|uniprot=Q9Y4C0
|diseases=Autism Spectrum Disorder, Alzheimer's Disease, Substance Use Disorder, Schizophrenia, Parkinson's Disease, Intellectual Disability
}}
The NRXN3 gene encodes Neurexin 3, a member of the neurexin family of presynaptic cell adhesion molecules that are essential for synapse formation, maintenance, and function. NRXN3 is unique among neurexins in its association with reward processing, addiction vulnerability, and social behavior.
The NRXN3 gene spans over 1.5 Mb with 24 exons. Key isoforms:
NRXN3 mediates presynaptic differentiation, recruits synaptic vesicles, organizes postsynaptic receptors, and maintains synaptic stability.
| Partner | Type | Function |
|---|---|---|
| Neuroligin-1 | Adhesion | Excitatory synapses |
| Neuroligin-2 | Adhesion | Inhibitory synapses |
| CASK | Scaffold | Synaptic organization |
NRXN3 is expressed in cerebral cortex (layer 2/3 pyramidal neurons), hippocampus (CA1-CA3, dentate gyrus), striatum (medium spiny neurons), and basal forebrain cholinergic neurons.
Missler M, et al. "Neurexophilins form a conserved family of neuropeptide-like glycoproteins." Journal of Neuroscience. 2003;23(11):4520-4530. PMID:12805290.
Shapiro L, et al. "Structure and function of the neurexin adhesion complex." Current Opinion in Neurobiology. 2019;57:71-79. PMID:30763748.
Gauthier J, et al. "Novel NRXN3 mutations in autism spectrum disorder." Human Molecular Genetics. 2011;20(9):1825-1833. PMID:21266457.
Treutlein J, et al. "Genome-wide association study of alcohol dependence." Archives of General Psychiatry. 2009;66(7):773-784. PMID:19581569.
Liu X, et al. "Neurexin in Alzheimer's disease: synaptic function and therapeutic targeting." Frontiers in Molecular Neuroscience. 2023;16:1189012. PMID:37448567.
The study of Nrxn3 Gene 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.
Missler M, et al. "Neurexophilins form a conserved family of neuropeptide-like glycoproteins." Journal of Neuroscience. 2003;23(11):4520-4530. PMID:12805290.
Shapiro L, et al. "Structure and function of the neurexin adhesion complex." Current Opinion in Neurobiology. 2019;57:71-79. PMID:30763748.
Gauthier J, et al. "Novel NRXN3 mutations in autism spectrum disorder." Human Molecular Genetics. 2011;20(9):1825-1833. PMID:21266457.
Treutlein J, et al. "Genome-wide association study of alcohol dependence." Archives of General Psychiatry. 2009;66(7):773-784. PMID:19581569.
Liu X, et al. "Neurexin in Alzheimer's disease: synaptic function and therapeutic targeting." Frontiers in Molecular Neuroscience. 2023;16:1189012. PMID:37448567.