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(-) Description

Title :  CRYSTAL STRUCTURE OF THE GLUK5 (KA2) ATD DIMER AT 1.7 ANGSTROM RESOLUTION
 
Authors :  J. Kumar, M. L. Mayer
Date :  26 Aug 10  (Deposition) - 03 Nov 10  (Release) - 08 Dec 10  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.68
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  J. Kumar, M. L. Mayer
Crystal Structures Of The Glutamate Receptor Ion Channel Gluk3 And Gluk5 Amino-Terminal Domains.
J. Mol. Biol. V. 404 680 2010
PubMed-ID: 20951142  |  Reference-DOI: 10.1016/J.JMB.2010.10.006
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - GLUTAMATE RECEPTOR GLUK5 (KA2)
    ChainsA, B
    EngineeredYES
    Expression SystemHOMO SAPIENS
    Expression System PlasmidPRK
    Expression System StrainHEK 293 GNTI(-)
    Expression System Taxid9606
    Expression System Vector TypePLASMID
    GeneGRIK5
    Organism ScientificRATTUS NORVEGICUS
    Organism Taxid10116

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 16)

Asymmetric/Biological Unit (3, 16)
No.NameCountTypeFull Name
1GOL2Ligand/IonGLYCEROL
2NA2Ligand/IonSODIUM ION
3NAG12Ligand/IonN-ACETYL-D-GLUCOSAMINE

(-) Sites  (16, 16)

Asymmetric Unit (16, 16)
No.NameEvidenceResiduesDescription
01AC1SOFTWARETYR A:139 , PRO A:140 , LEU A:158 , PHE A:162BINDING SITE FOR RESIDUE GOL A 394
02AC2SOFTWARENAG A:396BINDING SITE FOR RESIDUE NAG A 395
03AC3SOFTWARELYS A:148 , ASN A:200 , SER A:202 , NAG A:395 , HOH A:534BINDING SITE FOR RESIDUE NAG A 396
04AC4SOFTWAREASN A:252 , SER A:254 , GLY A:341 , ARG A:342 , THR A:355 , HOH A:481 , HOH A:482 , HOH A:628 , HOH A:678BINDING SITE FOR RESIDUE NAG A 397
05AC5SOFTWAREASN A:266 , ARG A:270 , TYR A:278 , ARG A:304 , HOH A:441 , HOH A:569BINDING SITE FOR RESIDUE NAG A 398
06AC6SOFTWAREALA A:42 , ARG A:300 , ASN A:303 , GLN A:364 , HOH A:586BINDING SITE FOR RESIDUE NAG A 399
07AC7SOFTWAREARG A:342 , GLU A:344 , ASN A:353 , HOH A:643BINDING SITE FOR RESIDUE NAG A 400
08AC8SOFTWAREPHE A:162 , SER A:165 , GLU A:167 , HOH A:429 , NA B:401 , HOH B:427BINDING SITE FOR RESIDUE NA A 401
09AC9SOFTWARETYR B:139 , PRO B:140 , GLY B:161 , PHE B:162 , SER B:165 , GLU B:167BINDING SITE FOR RESIDUE GOL B 394
10BC1SOFTWARESER B:177 , NAG B:396BINDING SITE FOR RESIDUE NAG B 395
11BC2SOFTWAREASN B:200 , SER B:202 , ILE B:203 , NAG B:395 , HOH B:436 , HOH B:484 , HOH B:573 , HOH B:578BINDING SITE FOR RESIDUE NAG B 396
12BC3SOFTWAREASN B:252 , SER B:254 , HOH B:443 , HOH B:444 , HOH B:549BINDING SITE FOR RESIDUE NAG B 397
13BC4SOFTWAREASN B:266 , ARG B:270 , TYR B:278 , GLU B:301 , GLU B:335 , HOH B:469 , HOH B:507 , HOH B:510BINDING SITE FOR RESIDUE NAG B 398
14BC5SOFTWARELEU B:5 , ALA B:42 , ARG B:300 , ASN B:303 , HOH B:487 , HOH B:526BINDING SITE FOR RESIDUE NAG B 399
15BC6SOFTWAREMET B:267 , GLU B:344 , ASN B:353 , HOH B:668BINDING SITE FOR RESIDUE NAG B 400
16BC7SOFTWARENA A:401 , HOH A:429 , PHE B:162 , SER B:165 , GLU B:167 , HOH B:427BINDING SITE FOR RESIDUE NA B 401

(-) SS Bonds  (6, 6)

Asymmetric/Biological Unit
No.Residues
1A:17 -A:273
2A:64 -A:315
3A:146 -A:151
4B:17 -B:273
5B:64 -B:315
6B:146 -B:151

(-) Cis Peptide Bonds  (5, 5)

Asymmetric/Biological Unit
No.Residues
1Val A:38 -Pro A:39
2Gly A:76 -Pro A:77
3Thr A:106 -Pro A:107
4Gly B:76 -Pro B:77
5Glu B:105 -Thr B:106

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3OM1)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3OM1)

(-) Exons   (0, 0)

(no "Exon" information available for 3OM1)

(-) Sequences/Alignments

Asymmetric/Biological 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:373
 aligned with GRIK5_RAT | Q63273 from UniProtKB/Swiss-Prot  Length:979

    Alignment length:374
                                    31        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    
            GRIK5_RAT    22 SSLRMAAILDDQTVCGRGERLALALAREQINGIIEVPAKARVEVDIFELQRDSQYETTDTMCQILPKGVVSVLGPSSSPASASTVSHICGEKEIPHIKVGPEETPRLQYLRFASVSLYPSNEDVSLAVSRILKSFNYPSASLICAKAECLLRLEELVRGFLISKETLSVRMLDDSRDPTPLLKEIRDDKVSTIIIDANASISHLVLRKASELGMTSAFYKYILTTMDFPILHLDGIVEDSSNILGFSMFNTSHPFYPEFVRSLNMSWRENCEASTYPGPALSAALMFDAVHVVVSAVRELNRSQEIGVKPLACTSANIWPHGTSLMNYLRMVEYDGLTGRVEFNSKGQRTNYTLRILEKSRQGHREIGVWYSNR 395
               SCOP domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeeee........hhhhhhhhhhhhhhhh.......eeeeeeee....hhhhhhhhhhhhhhhh...ee....hhhhhhhhhhhhhhhh..eee........hhhhhh.eee...hhhhhhhhhhhhhhhh....eeeee...hhhhhhhhhhhhhhhh...eeeee...-..hhhhhhhhhhhh..eeeee.hhhhhhhhhhhhhhh.......eeee...hhhhh...........eeeee.......hhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhh...................hhhhhhhhhhh..eee..eee...........eeeeeeee..eeeeeeeee... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3om1 A   3 SSLRMAAILDDQTVCGRGERLALALAREQINGIIEVPAKARVEVDIFELQRDSQYETTDTMCQILPKGVVSVLGPSSSPASASTVSHICGEKEIPHIKVGPEETPRLQYLRFASVSLYPSNEDVSLAVSRILKSFNYPSASLICAKAECLLRLEELVRGFLISKETLSVRMLDD-RDPTPLLKEIRDDKVSTIIIDANASISHLVLRKASELGMTSAFYKYILTTMDFPILHLDGIVEDSSNILGFSMFNTSHPFYPEFVRSLNMSWRENCEASTYPGPALSAALMFDAVHVVVSAVRELNRSQEIGVKPLACTSANIWPHGTSLMNYLRMVEYDGLTGRVEFNSKGQRTNYTLRILEKSRQGHREIGVWYSNR 376
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172   | | 182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352       362       372    
                                                                                                                                                                                                       176 |                                                                                                                                                                                                      
                                                                                                                                                                                                         178                                                                                                                                                                                                      

Chain B from PDB  Type:PROTEIN  Length:367
 aligned with GRIK5_RAT | Q63273 from UniProtKB/Swiss-Prot  Length:979

    Alignment length:374
                                    30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390    
            GRIK5_RAT    21 LSSLRMAAILDDQTVCGRGERLALALAREQINGIIEVPAKARVEVDIFELQRDSQYETTDTMCQILPKGVVSVLGPSSSPASASTVSHICGEKEIPHIKVGPEETPRLQYLRFASVSLYPSNEDVSLAVSRILKSFNYPSASLICAKAECLLRLEELVRGFLISKETLSVRMLDDSRDPTPLLKEIRDDKVSTIIIDANASISHLVLRKASELGMTSAFYKYILTTMDFPILHLDGIVEDSSNILGFSMFNTSHPFYPEFVRSLNMSWRENCEASTYPGPALSAALMFDAVHVVVSAVRELNRSQEIGVKPLACTSANIWPHGTSLMNYLRMVEYDGLTGRVEFNSKGQRTNYTLRILEKSRQGHREIGVWYSN 394
               SCOP domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeeeeee........hhhhhhhhhhhhhhhh-----..eeeeeeee....hhhhhhhhhhhhhhhh...ee....hhhhhhhhhhhhhhhh..eee.......-hhhhh..eee...hhhhhhhhhhhhhhhh....eeeee...hhhhhhhhhhhhhhhh...eeeee..-...hhhhhhhhhhhh..eeeee.hhhhhhhhhhhhhhh.......eeee...hhhhh..........eeeeee.......hhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhhhhhhhhhhhhh................hhhhhhhhhh...eee..eeeee.....ee..eeeeeee....eeeeeeee.. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3om1 B   2 LSSLRMAAILDDQTVCGRGERLALALAREQINGI-----KARVEVDIFELQRDSQYETTDTMCQILPKGVVSVLGPSSSPASASTVSHICGEKEIPHIKVGPEETP-LQYLRFASVSLYPSNEDVSLAVSRILKSFNYPSASLICAKAECLLRLEELVRGFLISKETLSVRMLD-SRDPTPLLKEIRDDKVSTIIIDANASISHLVLRKASELGMTSAFYKYILTTMDFPILHLDGIVEDSSNILGFSMFNTSHPFYPEFVRSLNMSWRENCEASTYPGPALSAALMFDAVHVVVSAVRELNRSQEIGVKPLACTSANIWPHGTSLMNYLRMVEYDGLTGRVEFNSKGQRTNYTLRILEKSRQGHREIGVWYSN 375
                                    11        21        31   |    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    
                                                            35    41                                                               107 |                                                               175 |                                                                                                                                                                                                      
                                                                                                                                     109                                                                 177                                                                                                                                                                                                      

   Legend:   → Mismatch (orange background)
  - → 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 3OM1)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3OM1)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3OM1)

(-) Gene Ontology  (41, 41)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (GRIK5_RAT | Q63273)
molecular function
    GO:0030165    PDZ domain binding    Interacting selectively and non-covalently with a PDZ domain of a protein, a domain found in diverse signaling proteins.
    GO:0017124    SH3 domain binding    Interacting selectively and non-covalently with a SH3 domain (Src homology 3) of a protein, small protein modules containing approximately 50 amino acid residues found in a great variety of intracellular or membrane-associated proteins.
    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:0008066    glutamate receptor activity    Combining with glutamate and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity.
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    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:0015277    kainate selective glutamate receptor activity    An ionotropic glutamate receptor activity that exhibits fast gating by glutamate, acts by opening a cation channel permeable to sodium and potassium, and for which kainate is an agonist.
    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:0004872    receptor activity    Combining with an extracellular or intracellular messenger to initiate a change in cell activity.
biological process
    GO:0071333    cellular response to glucose 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 glucose stimulus.
    GO:0007268    chemical synaptic transmission    The vesicular release of classical neurotransmitter molecules from a presynapse, across a chemical synapse, the subsequent activation of neurotransmitter receptors at the postsynapse of a target cell (neuron, muscle, or secretory cell) and the effects of this activation on the postsynaptic membrane potential and ionic composition of the postsynaptic cytosol. This process encompasses both spontaneous and evoked release of neurotransmitter and all parts of synaptic vesicle exocytosis. Evoked transmission starts with the arrival of an action potential at the presynapse.
    GO:0051649    establishment of localization in cell    Any process, occuring in a cell, that localizes a substance or cellular component. This may occur via movement, tethering or selective degradation.
    GO:0060079    excitatory postsynaptic potential    A process that leads to a temporary increase in postsynaptic potential due to the flow of positively charged ions into the postsynaptic cell. The flow of ions that causes an EPSP is an excitatory postsynaptic current (EPSC) and makes it easier for the neuron to fire an action potential.
    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:0043525    positive regulation of neuron apoptotic process    Any process that activates or increases the frequency, rate or extent of cell death of neurons by apoptotic process.
    GO:0006621    protein retention in ER lumen    The retention in the endoplasmic reticulum (ER) lumen of soluble resident proteins. Sorting receptors retrieve proteins with ER localization signals, such as KDEL and HDEL sequences or some transmembrane domains, that have escaped to the cis-Golgi network and return them to the ER. Abnormally folded proteins and unassembled subunits are also selectively retained in the ER.
    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:0042391    regulation of membrane potential    Any process that modulates the establishment or extent of a membrane potential, the electric potential existing across any membrane arising from charges in the membrane itself and from the charges present in the media on either side of the membrane.
    GO:0031630    regulation of synaptic vesicle fusion to presynaptic active zone membrane    Any process that modulates the frequency, rate or extent of synaptic vesicle fusion to the presynaptic membrane.
    GO:0035249    synaptic transmission, glutamatergic    The vesicular release of glutamate from a presynapse, across a chemical synapse, the subsequent activation of glutamate receptors at the postsynapse of a target cell (neuron, muscle, or secretory cell) and the effects of this activation on the postsynaptic membrane potential and ionic composition of the postsynaptic cytosol. This process encompasses both spontaneous and evoked release of neurotransmitter and all parts of synaptic vesicle exocytosis. Evoked transmission starts with the arrival of an action potential at the presynapse.
    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:0030424    axon    The long process of a neuron that conducts nerve impulses, usually away from the cell body to the terminals and varicosities, which are sites of storage and release of neurotransmitter.
    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:0030425    dendrite    A neuron projection that has a short, tapering, often branched, morphology, receives and integrates signals from other neurons or from sensory stimuli, and conducts a nerve impulse towards the axon or the cell body. In most neurons, the impulse is conveyed from dendrites to axon via the cell body, but in some types of unipolar neuron, the impulse does not travel via the cell body.
    GO:0005783    endoplasmic reticulum    The irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae. The ER takes two forms, rough (or granular), with ribosomes adhering to the outer surface, and smooth (with no ribosomes attached).
    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:0008328    ionotropic glutamate receptor complex    A multimeric 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.
    GO:0032983    kainate 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. Kainate receptors are multimeric assemblies of GluK1-3 (also called GluR5-7), GluK4 (KA1) and GluK5 (KA2) subunits.
    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:0043025    neuronal cell body    The portion of a neuron that includes the nucleus, but excludes cell projections such as axons and dendrites.
    GO:0043204    perikaryon    The portion of the cell soma (neuronal cell body) that excludes the nucleus.
    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: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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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        GRIK5_RAT | Q632733om0 3qlu 3qlv

(-) Related Entries Specified in the PDB File

3h6g GLUK2 (GLUR6) ATD DIMER
3h6h GLUK2 (GLUR6) ATD DIMER
3olz CRYSTAL STRUCTURE OF THE GLUK3 (GLUR7) ATD DIMER AT 2.75 ANGSTROM RESOLUTION
3om0 CRYSTAL STRUCTURE OF THE GLUK5 (KA2) ATD CRYSTALLOGRAPHIC DIMER AT 1.4 ANGSTROM RESOLUTION