title: Domain interaction between NMDA receptor subunits and the postsynaptic density protein PSD-95.
abstract: The N-methyl-D-aspartate (NMDA) receptor subserves synaptic glutamate-induced transmission and plasticity in central neurons. The yeast two-hybrid system was used to show that the cytoplasmic tails of NMDA receptor subunits interact with a prominent postsynaptic density protein PSD-95. The second PDZ domain in PSD-95 binds to the seven-amino acid, COOH-terminal domain containing the terminal tSXV motif (where S is serine, X is any amino acid, and V is valine) common to NR2 subunits and certain NR1 splice forms. Transcripts encoding PSD-95 are expressed in a pattern similar to that of NMDA receptors, and the NR2B subunit co-localizes with PSD-95 in cultured rat hippocampal neurons. The interaction of these proteins may affect the plasticity of excitatory synapses.
authors.affiliation: Center for Molecular Biology (ZMBH), University of Heidelberg, Germany.
authors.forename: H C
authors.initials: HC
authors.lastname: Kornau
authors.forename: L T
authors.initials: LT
authors.lastname: Schenker
authors.forename: M B
authors.initials: MB
authors.lastname: Kennedy
authors.forename: P H
authors.initials: PH
authors.lastname: Seeburg
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002478:Cells, Cultured; D003593:Cytoplasm / Q000737:chemistry; D000076122:Disks Large Homolog 4 Protein; D017930:Genes, Reporter; D006624:Hippocampus / Q000378:metabolism*; D047908:Intracellular Signaling Peptides and Proteins; D008565:Membrane Proteins; D008969:Molecular Sequence Data; D009419:Nerve Tissue Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D009473:Neuronal Plasticity; D009474:Neurons / Q000378:metabolism*; D012326:RNA Splicing; D051381:Rats; D016194:Receptors, N-Methyl-D-Aspartate / Q000737:chemistry / Q000235:genetics / Q000378:metabolism*; D011993:Recombinant Fusion Proteins / Q000378:metabolism; D015398:Signal Transduction
chemical_list: D000076122:Disks Large Homolog 4 Protein; C501449:Dlg4 protein, rat; D047908:Intracellular Signaling Peptides and Proteins; D008565:Membrane Proteins; D009419:Nerve Tissue Proteins; D016194:Receptors, N-Methyl-D-Aspartate; D011993:Recombinant Fusion Proteins; C033652:postsynaptic density proteins