Crystal structure of a heterotetrameric NMDA receptor ion channel

Karakas, E., Furukawa, H. (2014) Crystal structure of a heterotetrameric NMDA receptor ion channel. Science, 344 (6187). pp. 992-7. ISSN 1095-9203 (Electronic)0036-8075 (Linking)

URL: http://www.ncbi.nlm.nih.gov/pubmed/24876489
DOI: 10.1126/science.1251915

Abstract

N-Methyl-D-aspartate (NMDA) receptors belong to the family of ionotropic glutamate receptors, which mediate most excitatory synaptic transmission in mammalian brains. Calcium permeation triggered by activation of NMDA receptors is the pivotal event for initiation of neuronal plasticity. Here, we show the crystal structure of the intact heterotetrameric GluN1-GluN2B NMDA receptor ion channel at 4 angstroms. The NMDA receptors are arranged as a dimer of GluN1-GluN2B heterodimers with the twofold symmetry axis running through the entire molecule composed of an amino terminal domain (ATD), a ligand-binding domain (LBD), and a transmembrane domain (TMD). The ATD and LBD are much more highly packed in the NMDA receptors than non-NMDA receptors, which may explain why ATD regulates ion channel activity in NMDA receptors but not in non-NMDA receptors.

Item Type: Paper
Subjects: bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > NMDA receptor
bioinformatics > genomics and proteomics > genetics & nucleic acid processing > protein structure, function, modification > protein types > ion channel
CSHL Authors:
Communities: CSHL labs > Furukawa lab
Stanley Institute for Cognitive Genomics
Depositing User: Matt Covey
Date Deposited: 09 Jun 2014 19:48
Last Modified: 06 Nov 2015 21:20
PMCID: PMC4113085
Related URLs:
URI: http://repository.cshl.edu/id/eprint/30292

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