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Glycine Binding Site of N-methyl-D-aspartate Receptor
- Molecular classification
- Ionotropic glutamate receptor, Receptor, Ligand-binding domain
01
Overview
The glycine binding site is a critical modulatory site on the NMDA receptor, an ionotropic glutamate receptor. It is located on the GluN1 subunit and requires glycine (or D-serine) binding for receptor activation in conjunction with glutamate. Activation of the NMDA receptor allows Ca²⁺ influx, which triggers downstream signaling essential for synaptic plasticity, learning, memory formation, and neurodevelopment. Dysregulation at this site has been implicated in neurological disorders such as schizophrenia and neurodegenerative diseases.
- Other names
- NMDA Receptor Glycine SiteGluN1 Glycine Binding SiteNR1 Glycine Binding SiteGlycine Co-agonist Site of NMDA Receptor
02
Mechanism of action
Agonist: Binds to the glycine binding site on the GluN1 subunit, enabling NMDA receptor activation upon glutamate binding and subsequent calcium influx. Antagonist: Competitively inhibits glycine binding, preventing NMDA receptor activation.
03
Biological functions
Co-agonist bindingNMDA receptor activationCalcium ion influx modulationSynaptic plasticityLearningMemory formationNeurodevelopment
04
Disease associations
SchizophreniaNeurodegenerative diseasesExcitotoxicity
05
Safety considerations
Excitotoxicity (due to excessive activation)Potential for altered synaptic plasticity
06
Interacting drugs
Glycine
2 more in the full profile.
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