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Asym./Biol. Unit - manually (Jmol Viewer)

Asym./Biol. Unit (Jmol Viewer)

Asym./Biol. Unit - sites (Jmol Viewer)

Title :   X-RAY STRUCTURE OF THE GLUR2 LIGAND-BINDING CORE (S1S2J) IN COMPLEX WITH (S)-ATPA AT 1.9 A RESOLUTION. CRYSTALLIZATION WITHOUT ZINC IONS.

Authors :   M. L. Lunn, A. Hogner, T. B. Stensbol, E. Gouaux, J. Egebjerg, J. S. Kastrup

Date :   14 Jan 03 (Deposition) - 11 Mar 03 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.90

Chains :   Asym./Biol. Unit : A,B

Keywords :   Ionotropic Glutamate Receptor Glur2, Ligand-Binding Core, Agonist Complex. , Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. L. Lunn, A. Hogner, T. B. Stensbol, E. Gouaux, J. Egebjerg, J. S. Kastrup
Three-Dimensional Structure Of The Ligand-Binding Core Of Glur2 In Complex With The Agonist (S)-Atpa: Implications For Receptor Subunit Selectivity.
J. Med. Chem. V. 46 872 2003
PubMed-ID: 12593667 | Reference-DOI: 10.1021/JM021020+
(for further references see the PDB file header)

Molecule 1 - GLUTAMATE RECEPTOR 2
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	PET30B
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Fragment	:	GLUR2-FLOP LIGAND-BINDING CORE (S1S2J)
	Organism Common	:	NORWAY RAT
	Organism Scientific	:	RATTUS NORVEGICUS
	Organism Taxid	:	10116
	Synonym	:	GLUR-2, GLUR-B, GLUR-K2, GLUTAMATE RECEPTOR IONOTROPIC AMPA 2

		1	2
Asymmetric/Biological Unit	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (2, 4)

No.	Name	Count	Type	Full Name
1	CE2	2	Ligand/Ion	3-(5-TERT-BUTYL-3-OXIDOISOXAZOL-4-YL)-L-ALANINATE
2	SO4	2	Ligand/Ion	SULFATE ION

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ASP B:136 , SER B:137 , LYS B:141 , ARG B:145 , HOH B:1027 , HOH B:1172 , HOH B:1211	BINDING SITE FOR RESIDUE SO4 B 1006
2	AC2	SOFTWARE	SER A:137 , LYS A:141 , ARG A:145 , HOH A:1051 , HOH A:1066 , HOH A:1103	BINDING SITE FOR RESIDUE SO4 A 1007
3	AC3	SOFTWARE	GLU A:10 , TYR A:58 , PRO A:86 , LEU A:87 , THR A:88 , ARG A:93 , GLY A:138 , SER A:139 , THR A:140 , THR A:171 , GLU A:190 , MET A:193 , TYR A:217 , HOH A:1038 , HOH A:1056	BINDING SITE FOR RESIDUE CE2 A 1008
4	AC4	SOFTWARE	GLU B:10 , TYR B:58 , PRO B:86 , LEU B:87 , THR B:88 , ARG B:93 , GLY B:138 , SER B:139 , THR B:140 , THR B:171 , GLU B:190 , MET B:193 , HOH B:1023 , HOH B:1091 , HOH B:1242	BINDING SITE FOR RESIDUE CE2 B 1007

Asymmetric/Biological Unit

No.	Residues
1	A:203	-	A:258
2	B:203	-	B:258

Asymmetric/Biological Unit

No.	Residues
1	Ser A:11	-	Pro A:12
2	Glu A:163	-	Pro A:164
3	Lys A:201	-	Pro A:202
4	Ser B:11	-	Pro B:12
5	Glu B:163	-	Pro B:164
6	Lys B:201	-	Pro B:202

(no "SAP(SNP)/Variant" information available for 1NNP)

(no "PROSITE Motif" information available for 1NNP)

(no "Exon" information available for 1NNP)

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
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Chain A from PDB  Type:PROTEIN  Length:258
 aligned with GRIA2_RAT | P19491 from UniProtKB/Swiss-Prot  Length:883

    Alignment length:381
                                   423       433       443       453       463       473       483       493       503       513       523       533       543       553       563       573       583       593       603       613       623       633       643       653       663       673       683       693       703       713       723       733       743       753       763       773       783       793 
            GRIA2_RAT   414 KTVVVTTILESPYVMMKKNHEMLEGNERYEGYCVDLAAEIAKHCGFKYKLTIVGDGKYGARDADTKIWNGMVGELVYGKADIAIAPLTITLVREEVIDFSKPFMSLGISIMIKKPQKSKPGVFSFLDPLAYEIWMCIVFAYIGVSVVLFLVSRFSPYEWHTEEFEDGRETQSSESTNEFGIFNSLWFSLGAFMQQGCDISPRSLSGRIVGGVWWFFTLIIISSYTANLAAFLTVERMVSPIESAEDLSKQTEIAYGTLDSGSTKEFFRRSKIAVFDKMWTYMRSAEPSVFVRTTAEGVARVRKSKGKYAYLLESTMNEYIEQRKPCDTMKVGGNLDSKGYGIATPKGSSLGNAVNLAVLKLNEQGLLDKLKNKWWYDKGEC 794
               SCOP domains d1nnpa_ A: Glutamate receptor ligand binding core                                                                                                                                                                                                                                                                                                                                             SCOP domains
               CATH domains 1nnpA01 A:1-106,A:215-258 Periplasmic binding protein-like II                                             1nnpA02 A                                                                                                                           :107-214 Periplasmic binding protein-like II                                                       1nnpA01 A:1-106,A:215-258                    CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeee.......ee..hhhhhhhhh.eehhhhhhhhhhhhhhh..eeeee................hhhhhhhhh....ee......hhhhhh.eee....eee.eeeeee..---------------------------------------------------------------------------------------------------------------------------....hhhhhhh....eeee...hhhhhhhhhh.hhhhhhhhhhhhh........hhhhhhhhhhhh...eeeeeehhhhhhhh......eeee......eee..eee....hhhhhhhhhhhhhhhhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1nnp A   1 KTVVVTTILESPYVMMKKNHEMLEGNERYEGYCVDLAAEIAKHCGFKYKLTIVGDGKYGARDADTKIWNGMVGELVYGKADIAIAPLTITLVREEVIDFSKPFMSLGISIMIKKG---------------------------------------------------------------------------------------------------------------------------TPIESAEDLSKQTEIAYGTLDSGSTKEFFRRSKIAVFDKMWTYMRSAEPSVFVRTTAEGVARVRKSKGKYAYLLESTMNEYIEQRKPCDTMKVGGNLDSKGYGIATPKGSSLGNAVNLAVLKLNEQGLLDKLKNKWWYDKGEC 258
                                    10        20        30        40        50        60        70        80        90       100       110    |    -         -         -         -         -         -         -         -         -         -         -         -       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257 
                                                                                                                                            115                                                                                                                         116

Chain B from PDB  Type:PROTEIN  Length:258
 aligned with GRIA2_RAT | P19491 from UniProtKB/Swiss-Prot  Length:883

    Alignment length:381
                                   423       433       443       453       463       473       483       493       503       513       523       533       543       553       563       573       583       593       603       613       623       633       643       653       663       673       683       693       703       713       723       733       743       753       763       773       783       793 
            GRIA2_RAT   414 KTVVVTTILESPYVMMKKNHEMLEGNERYEGYCVDLAAEIAKHCGFKYKLTIVGDGKYGARDADTKIWNGMVGELVYGKADIAIAPLTITLVREEVIDFSKPFMSLGISIMIKKPQKSKPGVFSFLDPLAYEIWMCIVFAYIGVSVVLFLVSRFSPYEWHTEEFEDGRETQSSESTNEFGIFNSLWFSLGAFMQQGCDISPRSLSGRIVGGVWWFFTLIIISSYTANLAAFLTVERMVSPIESAEDLSKQTEIAYGTLDSGSTKEFFRRSKIAVFDKMWTYMRSAEPSVFVRTTAEGVARVRKSKGKYAYLLESTMNEYIEQRKPCDTMKVGGNLDSKGYGIATPKGSSLGNAVNLAVLKLNEQGLLDKLKNKWWYDKGEC 794
               SCOP domains d1nnpb_ B: Glutamate receptor ligand binding core                                                                                                                                                                                                                                                                                                                                             SCOP domains
               CATH domains 1nnpB01 B:1-106,B:215-258 Periplasmic binding protein-like II                                             1nnpB02 B                                                                                                                           :107-214 Periplasmic binding protein-like II                                                       1nnpB01 B:1-106,B:215-258                    CATH domains
           Pfam domains (1) -----------Lig_chan-Glu_bd-1nnpB03 B:12-77                                   -----------------------------------------------------------------------------------------------------------------------------------------------------------------Lig_chan-1nnpB01 B:116-258                                                                                                                      Pfam domains (1)
           Pfam domains (2) -----------Lig_chan-Glu_bd-1nnpB04 B:12-77                                   -----------------------------------------------------------------------------------------------------------------------------------------------------------------Lig_chan-1nnpB02 B:116-258                                                                                                                      Pfam domains (2)
         Sec.struct. author ..eeeee.......ee..hhhhhhhhh.eehhhhhhhhhhhhhhh..eeeee................hhhhhhhhh....ee......hhhhhh.eee....eee.eeeeee..---------------------------------------------------------------------------------------------------------------------------....hhhhhhh....eeee...hhhhhhhhhh.hhhhhhhhhhhhhh.......hhhhhhhhhhhh...eeeeeehhhhhhhhh.....eeee......eee..eee....hhhhhhhhhhhhhhhhhhhhhhhhhh...... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1nnp B   1 KTVVVTTILESPYVMMKKNHEMLEGNERYEGYCVDLAAEIAKHCGFKYKLTIVGDGKYGARDADTKIWNGMVGELVYGKADIAIAPLTITLVREEVIDFSKPFMSLGISIMIKKG---------------------------------------------------------------------------------------------------------------------------TPIESAEDLSKQTEIAYGTLDSGSTKEFFRRSKIAVFDKMWTYMRSAEPSVFVRTTAEGVARVRKSKGKYAYLLESTMNEYIEQRKPCDTMKVGGNLDSKGYGIATPKGSSLGNAVNLAVLKLNEQGLLDKLKNKWWYDKGEC 258
                                    10        20        30        40        50        60        70        80        90       100       110    |    -         -         -         -         -         -         -         -         -         -         -         -       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257 
                                                                                                                                            115                                                                                                                         116

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 '\|'

Asymmetric/Biological Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Alpha and beta proteins (a/b) (23833)

Fold: Periplasmic binding protein-like II (813)

Superfamily: Periplasmic binding protein-like II (813)

Family: Phosphate binding protein-like (463)

Protein domain: Glutamate receptor ligand binding core (127)

Norway rat (Rattus norvegicus), GluR2 [TaxId: 10116] (115)

1a	d1nnpa_	A:
1b	d1nnpb_	B:

Asymmetric/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: D-Maltodextrin-Binding Protein; domain 2 (600)

Homologous Superfamily: Periplasmic binding protein-like II (486)

Norway rat (Rattus norvegicus) (84)

1a	1nnpA01	A:1-106,A:215-258
1b	1nnpB01	B:1-106,B:215-258
1c	1nnpA02	A:107-214
1d	1nnpB02	B:107-214

Asymmetric/Biological Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: Ion_channel (150)

Family: Lig_chan (109)

Rattus norvegicus (Rat) (101)

1a	Lig_chan-1nnpB01	B:116-258
1b	Lig_chan-1nnpB02	B:116-258

Clan: PBP (391)

Family: Lig_chan-Glu_bd (91)

Rattus norvegicus (Rat) (86)

2a	Lig_chan-Glu_bd-1nnpB03	B:12-77
2b	Lig_chan-Glu_bd-1nnpB04	B:12-77

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,B (GRIA2_RAT | P19491)

molecular function
	GO:0004971	AMPA glutamate receptor activity	An ionotropic glutamate receptor activity that exhibits fast gating by glutamate and acts by opening a cation channel permeable to sodium, potassium, and, in the absence of a GluR2 subunit, calcium.
	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:0005246	calcium channel regulator activity	Modulates the activity of a calcium channel.
	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: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:0019901	protein kinase binding	Interacting selectively and non-covalently with a protein kinase, any enzyme that catalyzes the transfer of a phosphate group, usually from ATP, to a protein substrate.
	GO:0004872	receptor activity	Combining with an extracellular or intracellular messenger to initiate a change in cell activity.
biological process
	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:0045184	establishment of protein localization	The directed movement of a protein to a specific location.
	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: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:0051262	protein tetramerization	The formation of a protein tetramer, a macromolecular structure consisting of four noncovalently associated identical or nonidentical subunits.
	GO:0031623	receptor internalization	A receptor-mediated endocytosis process that results in the movement of receptors from the plasma membrane to the inside of the cell. The process begins when cell surface receptors are monoubiquitinated following ligand-induced activation. Receptors are subsequently taken up into endocytic vesicles from where they are either targeted to the lysosome or vacuole for degradation or recycled back to the plasma membrane.
	GO:0001919	regulation of receptor recycling	Any process that modulates the frequency, rate, or extent of receptor recycling.
	GO:0051966	regulation of synaptic transmission, glutamatergic	Any process that modulates the frequency, rate or extent of glutamatergic synaptic transmission, the process of communication from a neuron to another neuron across a synapse using the neurotransmitter glutamate.
	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:0010226	response to lithium 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 lithium (Li+) ion stimulus.
	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:0032281	AMPA 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. The AMPA receptors mediate fast synaptic transmission in the CNS and are composed of subunits GluR1-4, products from separate genes. These subunits have an extracellular N-terminus and an intracellular C-terminus.
	GO:0032279	asymmetric synapse	A type of synapse occurring between an axon and a dendritic spine or dendritic shaft. Asymmetric synapses, the most abundant synapse type in the central nervous system, involve axons that contain predominantly spherical vesicles and contain a thickened postsynaptic density. Most or all synapses of this type are excitatory.
	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:0009986	cell surface	The external part of the cell wall and/or plasma membrane.
	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:0032839	dendrite cytoplasm	All of the contents of a dendrite, excluding the surrounding plasma membrane.
	GO:0043198	dendritic shaft	Cylindric portion of the dendrite, directly stemming from the perikaryon, and carrying the dendritic spines.
	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: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:0005789	endoplasmic reticulum membrane	The lipid bilayer surrounding the endoplasmic reticulum.
	GO:0030426	growth cone	The migrating motile tip of a growing nerve cell axon or dendrite.
	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:0005887	integral component of plasma membrane	The component of the plasma 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:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	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:0043234	protein complex	A stable macromolecular complex composed (only) of two or more polypeptide subunits along with any covalently attached molecules (such as lipid anchors or oligosaccharide) or non-protein prosthetic groups (such as nucleotides or metal ions). Prosthetic group in this context refers to a tightly bound cofactor. The component polypeptide subunits may be identical.
	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:0030672	synaptic vesicle membrane	The lipid bilayer surrounding a synaptic vesicle.
	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.

Asymmetric/Biological Unit
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	Cis Peptide Bonds
		Glu A:163 - Pro A:164	[ RasMol ]
		Glu B:163 - Pro B:164	[ RasMol ]
		Lys A:201 - Pro A:202	[ RasMol ]
		Lys B:201 - Pro B:202	[ RasMol ]
		Ser A:11 - Pro A:12	[ RasMol ]
		Ser B:11 - Pro B:12	[ RasMol ]

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	1nnp
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1ftj	CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH GLUTAMATE AT 1.9 RESOLUTION.
1ftk	CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2I) IN COMPLEX WITH KAINATE AT 1.6 A RESOLUTION.
1ftl	CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH THE ANTAGONIST DNQX AT 1.8 A RESOLUTION.
1ftm	CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH AMPA AT 1.7 RESOLUTION.
1fto	CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN THE APO STATE AT 2.0 A RESOLUTION.
1fw0	CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH KAINATE AT 2.0 A RESOLUTION.
1gr2	STRUCTURE OF A GLUTAMATE RECEPTOR LIGAND BINDING CORE (GLUR2) COMPLEXED WITH KAINATE.
1lb8	CRYSTAL STRUCTURE OF THE NON-DESENSITIZING GLUR2 LIGAND BINDING CORE MUTANT (S1S2J-L483Y) IN COMPLEX WITH AMPA AT 2.3 RESOLUTION.
1lb9	CRYSTAL STRUCTURE OF THE NON-DESENSITIZING GLUR2 LIGAND BINDING CORE MUTANT (S1S2J-L483Y) IN COMPLEX WITH ANTAGONIST DNQX AT 2.3 A RESOLUTION.
1lbb	CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING DOMAIN MUTANT (S1S2J-N754D) IN COMPLEX WITH KAINATE AT 2.1 A RESOLUTION.
1lbc	CRYSTAL STRUCTURE OF GLUR2 LIGAND BINDING CORE (S1S2J- N775S) IN COMPLEX WITH CYCLOTHIAZIDE (CTZ) AS WELL AS GLUTAMATE AT 1.8 A RESOLUTION.
1m5b	X-RAY STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH 2-ME-TET-AMPA AT 1.85 A RESOLUTION.
1m5c	X-RAY STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH BR-HIBO AT 1.65 A RESOLUTION.
1m5d	X-RAY STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J- Y702F) IN COMPLEX WITH BR-HIBO AT 1.73 A RESOLUTION.
1m5e	X-RAY STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH ACPA AT 1.46 A RESOLUTION.
1m5f	X-RAY STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J- Y702F) IN COMPLEX WITH ACPA AT 1.95 A RESOLUTION.
1mm6	CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH QUISQUALATE IN A NON ZINC CRYSTAL FORM AT 2.15 ANGSTROMS RESOLUTION.
1mm7	CRYSTAL STRUCTURE OF THE GLUR2 LIGAND BINDING CORE (S1S2J) IN COMPLEX WITH QUISQUALATE IN A ZINC CRYSTAL FORM AT 1.65 ANGSTROMS RESOLUTION.
1my3	CRYSTAL STRUCTURE OF GLUTAMATE RECEPTOR LIGAND-BINDING CORE IN COMPLEX WITH BROMO-WILLARDIINE IN THE ZN CRYSTAL FORM.
1my4	CRYSTAL STRUCTURE OF GLUTAMATE RECEPTOR LIGAND-BINDING CORE IN COMPLEX WITH IODO-WILLARDIINE IN THE ZN CRYSTAL FORM.
1nnk	X-RAY STRUCTURE OF THE GLUR2 LIGAND-BINDING CORE (S1S2J) IN COMPLEX WITH (S)-ATPA AT 1.85 A RESOLUTION. CRYSTALLIZATION WITH ZINC IONS.

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 4)

Sites (4, 4)

SS Bonds (2, 2)

Cis Peptide Bonds (6, 6)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

Sequences/Alignments

Classification and Annotation

SCOP Domains (1, 2)

CATH Domains (1, 4)

Pfam Domains (2, 4)

Gene Ontology (49, 49)

Visualization

Interactive Views

Still Images

Databases and Analysis Tools

Databases

Analysis Tools

Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File