3FVN - JenaLib

Asymmetric Unit (Jmol Viewer)

Asym. Unit - sites (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Biological Unit 2 (Jmol Viewer)

Biological Unit 3 (Jmol Viewer)

Title :   CRYSTAL STRUCTURE OF THE HUMAN GLUTAMATE RECEPTOR, GLUR5, LIGAND-BINDING CORE IN COMPLEX WITH 9-DEOXY-NEODYSIHERBAINE A IN SPACE GROUP P1

Authors :   M. Unno, M. Sasaki, M. Ikeda-Saito

Date :   16 Jan 09 (Deposition) - 19 Jan 10 (Release) - 26 Oct 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.50

Chains :   Asym. Unit : A,B
Biol. Unit 1: A  (1x)
Biol. Unit 2: B  (1x)
Biol. Unit 3: A,B  (1x)

Keywords :   Glutamate Receptor, Ligand-Binding Domain, 9-Deoxy-Neodysiherbaine, Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. Unno, M. Shinohara, K. Takayama, H. Tanaka, K. Teruya, K. Doh-Ura, R. Sakai, M. Sasaki, M. Ikeda-Saito
Binding And Selectivity Of The Marine Toxin Neodysiherbaine A And Its Synthetic Analogues To Gluk1 And Gluk2 Kainate Receptors.
J. Mol. Biol. V. 413 667 2011
PubMed-ID: 21893069 | Reference-DOI: 10.1016/J.JMB.2011.08.043

Molecule 1 - GLUTAMATE RECEPTOR, IONOTROPIC KAINATE 1
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PCOLD-1
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Fragment	:	LIGAND-BINDING DOMAIN, UNP RESIDUES 445-559, 682-820
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	GLUTAMATE RECEPTOR 5, GLUR-5, GLUR5, EXCITATORY AMINO ACID RECEPTOR 3, EAA3

		1	2
Asymmetric Unit	:	A	B
Biological Unit 1 (1x)	:	A
Biological Unit 2 (1x)	:		B
Biological Unit 3 (1x)	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (3, 13)

No.	Name	Count	Type	Full Name
1	9DX	2	Ligand/Ion	(2R,3AR,7R,7AR)-2-[(2S)-2-AMINO-3-HYDROXY-3-OXO-PROPYL]-7-HYDROXY-3,3A,5,6,7,7A-HEXAHYDROFURO[4,5-B]PYRAN-2-CARBOXYLIC ACID
2	GOL	8	Ligand/Ion	GLYCEROL
3	SO4	3	Ligand/Ion	SULFATE ION

Biological Unit 1 (3, 6)

No.	Name	Count	Type	Full Name
1	9DX	1	Ligand/Ion	(2R,3AR,7R,7AR)-2-[(2S)-2-AMINO-3-HYDROXY-3-OXO-PROPYL]-7-HYDROXY-3,3A,5,6,7,7A-HEXAHYDROFURO[4,5-B]PYRAN-2-CARBOXYLIC ACID
2	GOL	4	Ligand/Ion	GLYCEROL
3	SO4	1	Ligand/Ion	SULFATE ION

Biological Unit 2 (3, 7)

No.	Name	Count	Type	Full Name
1	9DX	1	Ligand/Ion	(2R,3AR,7R,7AR)-2-[(2S)-2-AMINO-3-HYDROXY-3-OXO-PROPYL]-7-HYDROXY-3,3A,5,6,7,7A-HEXAHYDROFURO[4,5-B]PYRAN-2-CARBOXYLIC ACID
2	GOL	4	Ligand/Ion	GLYCEROL
3	SO4	2	Ligand/Ion	SULFATE ION

Biological Unit 3 (3, 13)

No.	Name	Count	Type	Full Name
1	9DX	2	Ligand/Ion	(2R,3AR,7R,7AR)-2-[(2S)-2-AMINO-3-HYDROXY-3-OXO-PROPYL]-7-HYDROXY-3,3A,5,6,7,7A-HEXAHYDROFURO[4,5-B]PYRAN-2-CARBOXYLIC ACID
2	GOL	8	Ligand/Ion	GLYCEROL
3	SO4	3	Ligand/Ion	SULFATE ION

Asymmetric Unit (13, 13)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	HOH A:293 , THR A:505 , THR A:677 , PHE A:678 , LYS A:747 , HOH B:4 , HOH B:23 , HOH B:43 , HOH B:56	BINDING SITE FOR RESIDUE GOL A 3968
02	AC2	SOFTWARE	HOH A:248 , HOH A:262 , HOH A:264 , PRO A:517 , SER A:746 , GLY A:748 , THR B:520 , GLN B:771	BINDING SITE FOR RESIDUE GOL A 3971
03	AC3	SOFTWARE	HOH A:246 , LYS A:516 , ARG A:760 , THR A:764 , HOH B:195 , PHE B:514 , LYS B:516 , ARG B:760 , THR B:764	BINDING SITE FOR RESIDUE GOL A 3973
04	AC4	SOFTWARE	HOH A:266 , LEU A:468 , VAL A:469 , PRO A:470 , GLY A:472 , HOH B:26 , HOH B:85 , ARG B:704	BINDING SITE FOR RESIDUE GOL A 3976
05	AC5	SOFTWARE	HOH A:380 , GLU A:426 , TYR A:474 , PRO A:501 , LEU A:502 , THR A:503 , ARG A:508 , VAL A:670 , GLY A:673 , SER A:674 , THR A:675 , SER A:706 , MET A:722 , GLU A:723 , SER A:726 , TYR A:749 , HOH B:20 , HOH B:42 , HOH B:63	BINDING SITE FOR RESIDUE 9DX A 1
06	AC6	SOFTWARE	ARG A:444 , LEU A:468 , HOH B:70 , HOH B:125 , HOH B:142 , ARG B:704	BINDING SITE FOR RESIDUE SO4 A 791
07	AC7	SOFTWARE	HOH A:264 , THR A:520 , GLN A:771 , HOH B:261 , HOH B:353 , PRO B:517 , SER B:746 , GLY B:748	BINDING SITE FOR RESIDUE GOL B 3969
08	AC8	SOFTWARE	HOH B:3 , HOH B:13 , HOH B:17 , HOH B:41 , HOH B:272 , THR B:505 , THR B:677 , PHE B:678 , LYS B:747	BINDING SITE FOR RESIDUE GOL B 3970
09	AC9	SOFTWARE	HOH B:163 , HOH B:171 , HOH B:305 , LYS B:454 , TYR B:464 , ALA B:660 , LYS B:661 , THR B:663 , LYS B:689	BINDING SITE FOR RESIDUE GOL B 3972
10	BC1	SOFTWARE	HOH B:297 , HOH B:331 , ARG B:671 , ASP B:672 , LYS B:680 , TRP B:691	BINDING SITE FOR RESIDUE GOL B 3974
11	BC2	SOFTWARE	HOH B:6 , HOH B:14 , HOH B:69 , HOH B:379 , GLU B:426 , TYR B:474 , PRO B:501 , LEU B:502 , THR B:503 , ARG B:508 , VAL B:670 , GLY B:673 , SER B:674 , THR B:675 , SER B:706 , MET B:722 , GLU B:723 , SER B:726 , TYR B:749	BINDING SITE FOR RESIDUE 9DX B 2
12	BC3	SOFTWARE	ARG B:417 , TYR B:759 , ASN B:787	BINDING SITE FOR RESIDUE SO4 B 5
13	BC4	SOFTWARE	HOH B:327 , ARG B:444 , VAL B:466 , LYS B:467 , LEU B:468	BINDING SITE FOR RESIDUE SO4 B 791

Asymmetric Unit

No.	Residues
1	A:735	-	A:789
2	B:735	-	B:789

Asymmetric Unit

No.	Residues
1	Glu A:427	-	Pro A:428
2	Arg A:785	-	Gly A:786
3	Glu B:427	-	Pro B:428
4	Arg B:785	-	Gly B:786

Asymmetric Unit (1, 2)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_012041	I	757	V	GRIK1_HUMAN	Polymorphism	363494	A/B	I	727	V

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 1 (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_012041	I	757	V	GRIK1_HUMAN	Polymorphism	363494	A	I	727	V

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 2 (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_012041	I	757	V	GRIK1_HUMAN	Polymorphism	363494	B	I	727	V

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 3 (1, 2)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_012041	I	757	V	GRIK1_HUMAN	Polymorphism	363494	A/B	I	727	V

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

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

(no "Exon" information available for 3FVN)

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:256
 aligned with GRIK1_HUMAN | P39086 from UniProtKB/Swiss-Prot  Length:918

    Alignment length:376
                                   454       464       474       484       494       504       514       524       534       544       554       564       574       584       594       604       614       624       634       644       654       664       674       684       694       704       714       724       734       744       754       764       774       784       794       804       814      
          GRIK1_HUMAN   445 ANRTLIVTTILEEPYVMYRKSDKPLYGNDRFEGYCLDLLKELSNILGFIYDVKLVPDGKYGAQNDKGEWNGMVKELIDHRADLAVAPLTITYVREKVIDFSKPFMTLGISILYRKPNGTNPGVFSFLNPLSPDIWMYVLLACLGVSCVLFVIARFTPYEWYNPHPCNPDSDVVENNFTLLNSFWFGVGALMQQGSELMPKALSTRIVGGIWWFFTLIIISSYTANLAAFLTVERMESPIDSADDLAKQTKIEYGAVRDGSTMTFFKKSKISTYEKMWAFMSSRQQTALVRNSDEGIQRVLTTDYALLMESTSIEYVTQRNCNLTQIGGLIDSKGYGVGTPIGSPYRDKITIAILQLQEEGKLHMMKEKWWRGNGCP 820
               SCOP domains d3fvna_ A: automated matches                                                                                                                                                                                                                                                                                                                                                             SCOP domains
               CATH domains 3fvnA01 A:415-521,A:747-790 Periplasmic binding protein-like II                                            ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------3fvnA01 A:415-521,A:747-790                  CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeee.......ee.......hhhh.eehhhhhhhhhhhhhhh..eeeee...............hhhhhhhhh....ee......hhhhhh.eee....eee.eeeeee.--..----------------------------------------------------------------------------------------------------------------------...hhhhhhhh...eee....hhhhhhhhhh.hhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhh.eeeeeehhhhhhhhh....eeee......eee..eee....hhhhhhhhhhhhhhhhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------V--------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3fvn A 415 ANRTLIVTTILEEPYVMYRKSDKPLYGNDRFEGYCLDLLKELSNILGFIYDVKLVPDGKYGAQNDKGEWNGMVKELIDHRADLAVAPLTITYVREKVIDFSKPFMTLGISILYRK--GT----------------------------------------------------------------------------------------------------------------------PIDSADDLAKQTKIEYGAVRDGSTMTFFKKSKISTYEKMWAFMSSRQQTALVRNSDEGIQRVLTTDYALLMESTSIEYVTQRNCNLTQIGGLIDSKGYGVGTPIGSPYRDKITIAILQLQEEGKLHMMKEKWWRGNGCP 790
                                   424       434       444       454       464       474       484       494       504       514       524    |  ||-         -         -         -         -         -         -         -         -         -         -         -       654       664       674       684       694       704       714       724       734       744       754       764       774       784      
                                                                                                                                            529  ||                                                                                                                    652                                                                                                                                          
                                                                                                                                               600|                                                                                                                                                                                                                                                                 
                                                                                                                                                601

Chain B from PDB  Type:PROTEIN  Length:256
 aligned with GRIK1_HUMAN | P39086 from UniProtKB/Swiss-Prot  Length:918

    Alignment length:376
                                   454       464       474       484       494       504       514       524       534       544       554       564       574       584       594       604       614       624       634       644       654       664       674       684       694       704       714       724       734       744       754       764       774       784       794       804       814      
          GRIK1_HUMAN   445 ANRTLIVTTILEEPYVMYRKSDKPLYGNDRFEGYCLDLLKELSNILGFIYDVKLVPDGKYGAQNDKGEWNGMVKELIDHRADLAVAPLTITYVREKVIDFSKPFMTLGISILYRKPNGTNPGVFSFLNPLSPDIWMYVLLACLGVSCVLFVIARFTPYEWYNPHPCNPDSDVVENNFTLLNSFWFGVGALMQQGSELMPKALSTRIVGGIWWFFTLIIISSYTANLAAFLTVERMESPIDSADDLAKQTKIEYGAVRDGSTMTFFKKSKISTYEKMWAFMSSRQQTALVRNSDEGIQRVLTTDYALLMESTSIEYVTQRNCNLTQIGGLIDSKGYGVGTPIGSPYRDKITIAILQLQEEGKLHMMKEKWWRGNGCP 820
               SCOP domains d3fvnb_ B: automated matches                                                                                                                                                                                                                                                                                                                                                             SCOP domains
               CATH domains 3fvnB01 B:415-521,B:747-790 Periplasmic binding protein-like II                                            ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------3fvnB01 B:415-521,B:747-790                  CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeee.......ee.......hhhh.eehhhhhhhhhhhhhhh..eeeee...............hhhhhhhhh....ee......hhhhhh.eee....eee.eeeeee.--..----------------------------------------------------------------------------------------------------------------------...hhhhhhhh...eeeee..hhhhhhhhhh.hhhhhhhhhhhhhhhhhhee.hhhhhhhhhhhh.eeeeeehhhhhhhhh....eeee......eee..eee....hhhhhhhhhhhhhhhhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------V--------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3fvn B 415 ANRTLIVTTILEEPYVMYRKSDKPLYGNDRFEGYCLDLLKELSNILGFIYDVKLVPDGKYGAQNDKGEWNGMVKELIDHRADLAVAPLTITYVREKVIDFSKPFMTLGISILYRK--GT----------------------------------------------------------------------------------------------------------------------PIDSADDLAKQTKIEYGAVRDGSTMTFFKKSKISTYEKMWAFMSSRQQTALVRNSDEGIQRVLTTDYALLMESTSIEYVTQRNCNLTQIGGLIDSKGYGVGTPIGSPYRDKITIAILQLQEEGKLHMMKEKWWRGNGCP 790
                                   424       434       444       454       464       474       484       494       504       514       524    |  ||-         -         -         -         -         -         -         -         -         -         -         -       654       664       674       684       694       704       714       724       734       744       754       764       774       784      
                                                                                                                                            529  ||                                                                                                                    652                                                                                                                                          
                                                                                                                                               600|                                                                                                                                                                                                                                                                 
                                                                                                                                                601

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 Unit

Classes(

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Folds(

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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: automated matches (267)

Protein domain: automated matches (267)

Human (Homo sapiens) [TaxId: 9606] (12)

1a	d3fvna_	A:
1b	d3fvnb_	B:

Asymmetric 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)

Human (Homo sapiens) (55)

1a	3fvnA01	A:415-521,A:747-790
1b	3fvnB01	B:415-521,B:747-790

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

Asymmetric Unit(hide GO term definitions)

Chain A,B (GRIK1_HUMAN | P39086)

molecular function
	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: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:0015276	ligand-gated ion channel activity	Enables the transmembrane transfer of an ion by a channel that opens when a specific ligand has been bound by the channel complex or one of its constituent parts.
	GO:0004872	receptor activity	Combining with an extracellular or intracellular messenger to initiate a change in cell activity.
biological process
	GO:0007417	central nervous system development	The process whose specific outcome is the progression of the central nervous system over time, from its formation to the mature structure. The central nervous system is the core nervous system that serves an integrating and coordinating function. In vertebrates it consists of the brain and spinal cord. In those invertebrates with a central nervous system it typically consists of a brain, cerebral ganglia and a nerve cord.
	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:0007215	glutamate receptor signaling pathway	A series of molecular signals initiated by the binding of glutamate to a glutamate receptor on the surface of a target cell, and ending with regulation of a downstream cellular process, e.g. transcription.
	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:0007399	nervous system development	The process whose specific outcome is the progression of nervous tissue over time, from its formation to its mature state.
	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: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: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: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:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	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: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: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.

Asymmetric Unit
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	Ligands, Modified Residues, Ions
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	Cis Peptide Bonds
		Arg A:785 - Gly A:786	[ RasMol ]
		Arg B:785 - Gly B:786	[ RasMol ]
		Glu A:427 - Pro A:428	[ RasMol ]
		Glu B:427 - Pro B:428	[ RasMol ]

Biological Units
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	3fvn
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		Protein Cavities	:	castP
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		Structure Alignment	:	STRAP(Java WebStart application, automatic local installation, requires Java; full application with system access!)
		Structure and Sequence Browser	:	STING

Access by UniProt ID/Accession number
	GRIK1_HUMAN \| P39086
		Protein Disorder Prediction	:	DisEMBL \| FoldIndex \| GLOBPLOT (for more information see DisProt)

UniProtKB/Swiss-Prot
	GRIK1_HUMAN \| P39086	:	2zns 2znt 2znu 3fuz 3fv1 3fv2 3fvg 3fvk 3fvo 4mf3

2zns	SAME PROTEIN IN DIFFERENT SPACE GROUP
2znt	SAME PROTEIN IN DIFFERENT SPACE GROUP
2znu	SAME PROTEIN IN DIFFERENT SPACE GROUP
3fuz	SAME PROTEIN WITH DIFFERENT LIGAND
3fv1	SAME PROTEIN WITH DIFFERENT LIGAND
3fv2	SAME PROTEIN WITH DIFFERENT LIGAND
3fvg	SAME PROTEIN WITH DIFFERENT LIGAND
3fvk	SAME PROTEIN WITH DIFFERENT LIGAND
3fvo	SAME PROTEIN WITH DIFFERENT LIGAND

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (3, 13)

Sites (13, 13)

SS Bonds (2, 2)

Cis Peptide Bonds (4, 4)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (1, 2)

PROSITE Motifs (0, 0)

Exons (0, 0)

Sequences/Alignments

Classification and Annotation

SCOP Domains (1, 2)

CATH Domains (1, 2)

Pfam Domains (0, 0)

Gene Ontology (22, 22)

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