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(-) Description

Title :  CRYSTAL STRUCTURE OF AMINO TERMINAL DOMAIN OF THE NMDA RECEPTOR SUBUNIT NR2B
 
Authors :  E. Karakas, N. Simorowski, H. Furukawa
Date :  04 Sep 09  (Deposition) - 08 Dec 09  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.80
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  A  (2x)
Keywords :  Nmda Receptor, Amino Terminal Domain, Phenylethanolamine, Cell Junction, Cell Membrane, Glycoprotein, Ion Transport, Ionic Channel, Magnesium, Membrane, Phosphoprotein, Postsynaptic Cell Membrane, Receptor, Synapse, Transmembrane, Transport, Transport Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  E. Karakas, N. Simorowski, H. Furukawa
Structure Of The Zinc-Bound Amino-Terminal Domain Of The Nmda Receptor Nr2B Subunit.
Embo J. V. 28 3910 2009
PubMed-ID: 19910922  |  Reference-DOI: 10.1038/EMBOJ.2009.338

(-) Compounds

Molecule 1 - GLUTAMATE [NMDA] RECEPTOR SUBUNIT EPSILON-2
    ChainsA
    EngineeredYES
    Expression SystemTRICHOPLUSIA NI
    Expression System Taxid7111
    FragmentAMINO TERMINAL DOMAIN
    GeneGRIN2B
    MutationYES
    Organism CommonBROWN RAT,RAT,RATS
    Organism ScientificRATTUS NORVEGICUS
    Organism Taxid10116
    SynonymN-METHYL D-ASPARTATE RECEPTOR SUBTYPE 2B, NMDAR2B, NR2B

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit A
Biological Unit 1 (1x)A
Biological Unit 2 (2x)A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 20)

Asymmetric Unit (3, 20)
No.NameCountTypeFull Name
1CL17Ligand/IonCHLORIDE ION
2NA1Ligand/IonSODIUM ION
3NAG2Ligand/IonN-ACETYL-D-GLUCOSAMINE
Biological Unit 1 (1, 2)
No.NameCountTypeFull Name
1CL-1Ligand/IonCHLORIDE ION
2NA-1Ligand/IonSODIUM ION
3NAG2Ligand/IonN-ACETYL-D-GLUCOSAMINE
Biological Unit 2 (1, 4)
No.NameCountTypeFull Name
1CL-1Ligand/IonCHLORIDE ION
2NA-1Ligand/IonSODIUM ION
3NAG4Ligand/IonN-ACETYL-D-GLUCOSAMINE

(-) Sites  (18, 18)

Asymmetric Unit (18, 18)
No.NameEvidenceResiduesDescription
01AC1SOFTWAREASN A:74 , GLU A:75BINDING SITE FOR RESIDUE NAG A 501
02AC2SOFTWAREASP A:306 , ASN A:341BINDING SITE FOR RESIDUE NAG A 502
03AC3SOFTWAREILE A:133 , GLN A:153 , LEU A:261BINDING SITE FOR RESIDUE CL A 601
04AC4SOFTWAREHIS A:127 , SER A:131 , TYR A:282 , ARG A:292BINDING SITE FOR RESIDUE CL A 602
05AC5SOFTWAREGLU A:284 , TRP A:285 , ASP A:286 , TYR A:287 , ARG A:292BINDING SITE FOR RESIDUE CL A 603
06AC6SOFTWAREHOH A:12 , ARG A:294 , ARG A:393BINDING SITE FOR RESIDUE CL A 604
07AC7SOFTWAREGLY A:178 , GLN A:180BINDING SITE FOR RESIDUE CL A 605
08AC8SOFTWAREGLN A:180BINDING SITE FOR RESIDUE CL A 606
09AC9SOFTWAREGLU A:374 , ARG A:375BINDING SITE FOR RESIDUE CL A 607
10BC1SOFTWAREGLN A:385BINDING SITE FOR RESIDUE CL A 608
11BC2SOFTWAREMET A:73BINDING SITE FOR RESIDUE CL A 609
12BC3SOFTWARESER A:320 , TYR A:322 , ASN A:323BINDING SITE FOR RESIDUE CL A 610
13BC4SOFTWARELEU A:205 , ASP A:206 , GLN A:219BINDING SITE FOR RESIDUE CL A 612
14BC5SOFTWARETHR A:103 , ASP A:104BINDING SITE FOR RESIDUE CL A 614
15BC6SOFTWAREASN A:368BINDING SITE FOR RESIDUE CL A 615
16BC7SOFTWAREILE A:150 , GLU A:151BINDING SITE FOR RESIDUE CL A 616
17BC8SOFTWAREHIS A:60 , ARG A:294 , TYR A:389 , VAL A:390BINDING SITE FOR RESIDUE CL A 617
18BC9SOFTWARESER A:131 , PHE A:146 , GLY A:147BINDING SITE FOR RESIDUE NA A 701

(-) SS Bonds  (1, 1)

Asymmetric Unit
No.Residues
1A:86 -A:321

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3JPW)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3JPW)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3JPW)

(-) Exons   (0, 0)

(no "Exon" information available for 3JPW)

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:359
 aligned with NMDE2_RAT | Q00960 from UniProtKB/Swiss-Prot  Length:1482

    Alignment length:363
                                    41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391   
            NMDE2_RAT    32 PPSIGIAVILVGTSDEVAIKDAHEKDDFHHLSVVPRVELVAMNETDPKSIITRICDLMSDRKIQGVVFADDTDQEAIAQILDFISAQTLTPILGIHGGSSMIMADKDESSMFFQFGPSIEQQASVMLNIMEEYDWYIFSIVTTYFPGYQDFVNKIRSTIENSFVGWELEEVLLLDMSLDDGDSKIQNQLKKLQSPIILLYCTKEEATYIFEVANSVGLTGYGYTWIVPSLVAGDTDTVPSEFPTGLISVSYDEWDYGLPARVRDGIAIITTAASDMLSEHSFIPEPKSSCYNTHEKRIYQSNMLNRYLINVTFEGRNLSFSEDGYQMHPKLVIILLNKERKWERVGKWKDKSLQMKYYVWPRM 394
               SCOP domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------ANF_receptor-3jpwA01 A:66-320                                                                                                                                                                                                                                  -------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeeeee..........hhh...........eeeeeee....hhhhhhhhhhhhhh.....eeeee.....hhhhhhhhhhhhh...eeeeehhhh...........eee....hhhhhhhhhhhhh.....eeeeee.....hhhhhhhhhhhhh......eeeeeee.....----...hhhh......eeeee..hhhhhhhhhhhh.........eeee.hhhh.............eeeee.......hhhhhhhhhhhhhhhhhhhhhhh.................hhhhhhhhhhh...ee..ee.............eeeeee.....eeeeeee....eee........ Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3jpw A  32 PPSIGIAVILVGTSDEVAIKDAHEKDDFHHLSVVPRVELVAMNETDPKSIITRICDLMSDRKIQGVVFADDTDQEAIAQILDFISAQTLTPILGIHGGSSMIMADKDESSMFFQFGPSIEQQASVMLNIMEEYDWYIFSIVTTYFPGYQDFVNKIRSTIENSFVGWELEEVLLLDMSL----SKIQNQLKKLQSPIILLYCTKEEATYIFEVANSVGLTGYGYTWIVPSLVAGDTDTVPSEFPTGLISVSYDEWDYGLPARVRDGIAIITTAASDMLSEHSFIPEPKSSCYNTHEKRIYQSNMLNRYLINVTFEGRDLSFSEDGYQMHPKLVIILLNKERKWERVGKWKDKSLQMKYYVWPRM 394
                                    41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       | -  |    221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381       391   
                                                                                                                                                                                                           209  214                                                                                                                                                                                    

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  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 3JPW)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3JPW)

(-) Pfam Domains  (1, 1)

Asymmetric Unit

(-) Gene Ontology  (74, 74)

Asymmetric Unit(hide GO term definitions)
Chain A   (NMDE2_RAT | Q00960)
molecular function
    GO:0031749    D2 dopamine receptor binding    Interacting selectively and non-covalently with a D2 dopamine receptor.
    GO:0004972    NMDA glutamate receptor activity    An cation channel that opens in response to binding by extracellular glutmate, but only if glycine is also bound and the membrane is depolarized. Voltage gating is indirect, due to ejection of bound magnesium from the pore at permissive voltages.
    GO:0008013    beta-catenin binding    Interacting selectively and non-covalently with the beta subunit of the catenin complex.
    GO:0050839    cell adhesion molecule binding    Interacting selectively and non-covalently with a cell adhesion molecule.
    GO:0008144    drug binding    Interacting selectively and non-covalently with a drug, any naturally occurring or synthetic substance, other than a nutrient, that, when administered or applied to an organism, affects the structure or functioning of the organism; in particular, any such substance used in the diagnosis, prevention, or treatment of disease.
    GO:0005234    extracellular-glutamate-gated ion channel activity    Enables the transmembrane transfer of an ion by a channel that opens when extracellular glutamate has been bound by the channel complex or one of its constituent parts.
    GO:0005149    interleukin-1 receptor binding    Interacting selectively and non-covalently with the interleukin-1 receptor.
    GO:0005216    ion channel activity    Enables the facilitated diffusion of an ion (by an energy-independent process) by passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism. May be either selective (it enables passage of a specific ion only) or non-selective (it enables passage of two or more ions of same charge but different size).
    GO:0004970    ionotropic glutamate receptor activity    Catalysis of the transmembrane transfer of an ion by a channel that opens when glutamate has been bound by the channel complex or one of its constituent parts.
    GO:0035255    ionotropic glutamate receptor binding    Interacting selectively and non-covalently with an ionotropic glutamate receptor. Ionotropic glutamate receptors bind glutamate and exert an effect through the regulation of ion channels.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0042165    neurotransmitter binding    Interacting selectively and non-covalently with a neurotransmitter, any chemical substance that is capable of transmitting (or inhibiting the transmission of) a nerve impulse from a neuron to another cell.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0046982    protein heterodimerization activity    Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
    GO:0004872    receptor activity    Combining with an extracellular or intracellular messenger to initiate a change in cell activity.
    GO:0005102    receptor binding    Interacting selectively and non-covalently with one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.
    GO:0008270    zinc ion binding    Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
    GO:0001508    action potential    A process in which membrane potential cycles through a depolarizing spike, triggered in response to depolarization above some threshold, followed by repolarization. This cycle is driven by the flow of ions through various voltage gated channels with different thresholds and ion specificities.
    GO:0008306    associative learning    Learning by associating a stimulus (the cause) with a particular outcome (the effect).
    GO:0071230    cellular response to amino acid stimulus    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an amino acid stimulus. An amino acid is a carboxylic acids containing one or more amino groups.
    GO:0071359    cellular response to dsRNA    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a double-stranded RNA stimulus.
    GO:0071363    cellular response to growth factor stimulus    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a growth factor stimulus.
    GO:0071396    cellular response to lipid    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a lipid stimulus.
    GO:0010350    cellular response to magnesium starvation    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of deprivation of magnesium.
    GO:0071287    cellular response to manganese ion    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a manganese ion stimulus.
    GO:0071407    cellular response to organic cyclic compound    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an organic cyclic compound stimulus.
    GO:0021987    cerebral cortex development    The progression of the cerebral cortex over time from its initial formation until its mature state. The cerebral cortex is the outer layered region of the telencephalon.
    GO:0021766    hippocampus development    The progression of the hippocampus over time from its initial formation until its mature state.
    GO:0034220    ion transmembrane transport    A process in which an ion is transported from one side of a membrane to the other by means of some agent such as a transporter or pore.
    GO:0006811    ion transport    The directed movement of charged atoms or small charged molecules into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0035235    ionotropic glutamate receptor signaling pathway    A series of molecular signals initiated by glutamate binding to a glutamate receptor on the surface of the target cell, followed by the movement of ions through a channel in the receptor complex. Ends with regulation of a downstream cellular process, e.g. transcription.
    GO:0007611    learning or memory    The acquisition and processing of information and/or the storage and retrieval of this information over time.
    GO:0007616    long-term memory    The memory process that deals with the storage, retrieval and modification of information a long time (typically weeks, months or years) after receiving that information. This type of memory is typically dependent on gene transcription regulated by second messenger activation.
    GO:0007613    memory    The activities involved in the mental information processing system that receives (registers), modifies, stores, and retrieves informational stimuli. The main stages involved in the formation and retrieval of memory are encoding (processing of received information by acquisition), storage (building a permanent record of received information as a result of consolidation) and retrieval (calling back the stored information and use it in a suitable way to execute a given task).
    GO:0033555    multicellular organismal response to stress    Any process that results in a change in state or activity of a multicellular organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating the organism is under stress. The stress is usually, but not necessarily, exogenous (e.g. temperature, humidity, ionizing radiation).
    GO:0010942    positive regulation of cell death    Any process that increases the rate or frequency of cell death. Cell death is the specific activation or halting of processes within a cell so that its vital functions markedly cease, rather than simply deteriorating gradually over time, which culminates in cell death.
    GO:0014049    positive regulation of glutamate secretion    Any process that activates or increases the frequency, rate or extent of the controlled release of glutamate.
    GO:0050806    positive regulation of synaptic transmission    Any process that activates or increases the frequency, rate or extent of synaptic transmission, the process of communication from a neuron to a target (neuron, muscle, or secretory cell) across a synapse.
    GO:0043113    receptor clustering    The receptor metabolic process that results in grouping of a set of receptors at a cellular location, often to amplify the sensitivity of a signaling response.
    GO:0043408    regulation of MAPK cascade    Any process that modulates the frequency, rate or extent of signal transduction mediated by the MAP kinase (MAPK) cascade.
    GO:0048169    regulation of long-term neuronal synaptic plasticity    A process that modulates long-term neuronal synaptic plasticity, the ability of neuronal synapses to change long-term as circumstances require. Long-term neuronal synaptic plasticity generally involves increase or decrease in actual synapse numbers.
    GO:0014075    response to amine    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an amine stimulus. An amine is a compound formally derived from ammonia by replacing one, two or three hydrogen atoms by hydrocarbyl groups.
    GO:0001975    response to amphetamine    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an amphetamine stimulus. Amphetamines consist of a group of compounds related to alpha-methylphenethylamine.
    GO:0051592    response to calcium ion    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a calcium ion stimulus.
    GO:0009743    response to carbohydrate    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a carbohydrate stimulus.
    GO:0042220    response to cocaine    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cocaine stimulus. Cocaine is a crystalline alkaloid obtained from the leaves of the coca plant.
    GO:0034097    response to cytokine    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a cytokine stimulus.
    GO:0051602    response to electrical stimulus    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an electrical stimulus.
    GO:0045471    response to ethanol    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an ethanol stimulus.
    GO:0060992    response to fungicide    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a fungicide stimulus. Fungicides are chemicals used to kill fungi.
    GO:0060416    response to growth hormone    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a growth hormone stimulus. Growth hormone is a peptide hormone that binds to the growth hormone receptor and stimulates growth.
    GO:0032026    response to magnesium ion    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a magnesium ion stimulus.
    GO:0010042    response to manganese ion    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a manganese ion stimulus.
    GO:0009612    response to mechanical stimulus    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a mechanical stimulus.
    GO:0051597    response to methylmercury    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a methylmercury stimulus.
    GO:0014070    response to organic cyclic compound    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of an organic cyclic compound stimulus.
    GO:0051707    response to other organism    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus from another living organism.
    GO:0009636    response to toxic substance    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a toxic stimulus.
    GO:0048511    rhythmic process    Any process pertinent to the generation and maintenance of rhythms in the physiology of an organism.
    GO:0006810    transport    The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
cellular component
    GO:0017146    NMDA selective glutamate receptor complex    An assembly of four or five subunits which form a structure with an extracellular N-terminus and a large loop that together form the ligand binding domain. The C-terminus is intracellular. The ionotropic glutamate receptor complex itself acts as a ligand gated ion channel; on binding glutamate, charged ions pass through a channel in the center of the receptor complex. NMDA receptors are composed of assemblies of NR1 subunits (Figure 3) and NR2 subunits, which can be one of four separate gene products (NR2A-D). Expression of both subunits are required to form functional channels. The glutamate binding domain is formed at the junction of NR1 and NR2 subunits. NMDA receptors are permeable to calcium ions as well as being permeable to other ions. Thus NMDA receptor activation leads to a calcium influx into the post-synaptic cells, a signal thought to be crucial for the induction of NMDA-receptor dependent LTP and LTD.
    GO:0030018    Z disc    Platelike region of a muscle sarcomere to which the plus ends of actin filaments are attached.
    GO:0030054    cell junction    A cellular component that forms a specialized region of connection between two or more cells or between a cell and the extracellular matrix. At a cell junction, anchoring proteins extend through the plasma membrane to link cytoskeletal proteins in one cell to cytoskeletal proteins in neighboring cells or to proteins in the extracellular matrix.
    GO:0043197    dendritic spine    A small, membranous protrusion from a dendrite that forms a postsynaptic compartment - typically receiving input from a single presynapse. They function as partially isolated biochemical and an electrical compartments. Spine morphology is variable including "thin", "stubby", "mushroom", and "branched", with a continuum of intermediate morphologies. They typically terminate in a bulb shape, linked to the dendritic shaft by a restriction. Spine remodeling is though to be involved in synaptic plasticity.
    GO:0016021    integral component of membrane    The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
    GO:0016020    membrane    A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
    GO:0043005    neuron projection    A prolongation or process extending from a nerve cell, e.g. an axon or dendrite.
    GO:0005886    plasma membrane    The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
    GO:0014069    postsynaptic density of dendrite    An electron dense network of proteins within and adjacent to the postsynaptic membrane of the dendrite of asymetric synapses. Its major components include neurotransmitter receptors and the proteins that spatially and functionally organize them such as anchoring and scaffolding molecules, signaling enzymes and cytoskeletal components.
    GO:0045211    postsynaptic membrane    A specialized area of membrane facing the presynaptic membrane on the tip of the nerve ending and separated from it by a minute cleft (the synaptic cleft). Neurotransmitters cross the synaptic cleft and transmit the signal to the postsynaptic membrane.
    GO:0042734    presynaptic membrane    A specialized area of membrane of the axon terminal that faces the plasma membrane of the neuron or muscle fiber with which the axon terminal establishes a synaptic junction; many synaptic junctions exhibit structural presynaptic characteristics, such as conical, electron-dense internal protrusions, that distinguish it from the remainder of the axon plasma membrane.
    GO:0045202    synapse    The junction between a nerve fiber of one neuron and another neuron, muscle fiber or glial cell. As the nerve fiber approaches the synapse it enlarges into a specialized structure, the presynaptic nerve ending, which contains mitochondria and synaptic vesicles. At the tip of the nerve ending is the presynaptic membrane; facing it, and separated from it by a minute cleft (the synaptic cleft) is a specialized area of membrane on the receiving cell, known as the postsynaptic membrane. In response to the arrival of nerve impulses, the presynaptic nerve ending secretes molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane.
    GO:0043083    synaptic cleft    The narrow gap that separates the presynaptic and postsynaptic membranes, into which neurotransmitter is released.
    GO:0043195    terminal bouton    Terminal inflated portion of the axon, containing the specialized apparatus necessary to release neurotransmitters. The axon terminus is considered to be the whole region of thickening and the terminal bouton is a specialized region of it.

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        NMDE2_RAT | Q009603jpy 3qel 3qem 4pe5 5b3j 5fxg 5fxh 5fxi 5fxj 5fxk 5tpz

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