Nlgn3 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.
This page provides comprehensive information about this gene and its relevance to neurodegenerative diseases.
The NLGN3 gene encodes neuroligin-3, a postsynaptic cell adhesion molecule that plays critical roles in synapse formation, function, and plasticity. Mutations in NLGN3 are associated with neurodevelopmental disorders including autism spectrum disorder (ASD) and intellectual disability.
| Property | Value |
|---|---|
| Gene Symbol | NLGN3 |
| Full Name | Neuroligin 3 |
| Chromosomal Location | Xq13.1 |
| NCBI Gene ID | 54413 |
| OMIM ID | 300336 |
| Ensembl ID | ENSG00000174373 |
| UniProt ID | Q9NZU4 |
NLGN3 spans approximately 36 kb on the X chromosome and consists of 19 exons encoding a protein of 1,461 amino acids. The gene follows the typical type I transmembrane protein architecture with:
Multiple splice variants have been described, including:
NLGN3 is a member of the neuroligin family of postsynaptic cell adhesion molecules that mediate trans-synaptic signaling:
Synapse Formation: NLGN3 interacts with presynaptic neurexins (NRXN1, NRXN2, NRXN3) to initiate and stabilize synaptic contacts between neurons.
Synaptic Specificity: Different neuroligin family members show preferences for excitatory (NLGN1) versus inhibitory (NLGN4X) synapses, with NLGN3 contributing to both.
Postsynaptic Organization: The cytoplasmic domain binds PSD-95 and other scaffolding proteins to organize the postsynaptic density.
Synaptic Plasticity: NLGN3 is required for activity-dependent long-term potentiation (LTP) and long-term depression (LTD), cellular correlates of learning and memory.
NLGN3 is expressed predominantly in the brain:
Expression is developmentally regulated, with peak expression during early postnatal development.
NLGN3 was one of the first genes implicated in monogenic forms of ASD:
The study of Nlgn3 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.
[1] Neuroligin-3 mutation associated with autism. Science. 2003;302(5644):445-449. DOI:10.1126/science.1083171
[2] Synaptic activity regulates neuroligin function. Nat Neurosci. 2011;14(8):995-1003. DOI:10.1038/nn.2755
[3] Neuroligin-3 and synaptic function in brain disorders. Trends Neurosci. 2019;42(11):735-747. DOI:10.1016/j.tins.2019.07.004
[4] Neuroligin-3 is required for synaptic plasticity and learning. Neuron. 2012;74(2):285-299. DOI:10.1016/j.neuron.2012.03.001
This gene page was created for NeuroWiki.