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(-) Description

Title :  CRYSTAL STRUCTURE OF THE CYTOPLASMIC DOMAIN OF G-PROTEIN ACTIVATED INWARD RECTIFIER POTASSIUM CHANNEL 1
 
Authors :  M. Nishida, R. Mackinnon
Date :  26 Nov 02  (Deposition) - 07 Jan 03  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.80
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (4x)
Keywords :  Beta Barrel, Cytoplasmic Domain, G Protein, Inward Rectifier, Potassium Channel, Metal Transport (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. Nishida, R. Mackinnon
Structural Basis Of Inward Rectification: Cytoplasmic Pore Of The G Protein-Gated Inward Rectifier Girk1 At 1. 8 A Resolution
Cell(Cambridge, Mass. ) V. 111 957 2002
PubMed-ID: 12507423  |  Reference-DOI: 10.1016/S0092-8674(02)01227-8

(-) Compounds

Molecule 1 - G PROTEIN-ACTIVATED INWARD RECTIFIER POTASSIUM CHANNEL 1
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET28B(+)
    Expression System Strain: B834(DE3)
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Gene: GIRK1
    Organism Common: HOUSE MOUSE
    Organism Scientific: MUS MUSCULUS
    Organism Taxid: 10090
    Synonym: GIRK1

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit : A
Biological Unit 1 (4x): A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 8)

Asymmetric Unit (1, 8)
No.NameCountTypeFull Name
1MSE8Mod. Amino AcidSELENOMETHIONINE
Biological Unit 1 (1, 32)
No.NameCountTypeFull Name
1MSE32Mod. Amino AcidSELENOMETHIONINE

(-) Sites  (0, 0)

(no "Site" information available for 1N9P)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1N9P)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1N9P)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1N9P)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1N9P)

(-) Exons   (3, 3)

Asymmetric Unit (3, 3)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1ENSRNOT000000073351ENSRNOE00000051326chr3:37068553-37069431879KCNJ3_RAT1-2342341A:43-234 (gaps)192
1.2ENSRNOT000000073352ENSRNOE00000235482chr3:37078339-37078555217KCNJ3_RAT235-307731A:235-30773
1.3ENSRNOT000000073353ENSRNOE00000051882chr3:37256141-372583872247KCNJ3_RAT307-5011951A:307-37064

(-) 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:197
 aligned with KCNJ3_MOUSE | P63250 from UniProtKB/Swiss-Prot  Length:501

    Alignment length:328
                                    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        
          KCNJ3_MOUSE    43 RQRFVDKNGRCNVQHGNLGSETSRYLSDLFTTLVDLKWRWNLFIFILTYTVAWLFMASMWWVIAYTRGDLNKAHVGNYTPCVANVYNFPSAFLFFIETEATIGYGYRYITDKCPEGIILFLFQSILGSIVDAFLIGCMFIKMSQPKKRAETLMFSEHAVISMRDGKLTLMFRVGNLRNSHMVSAQIRCKLLKSRQTPEGEFLPLDQLELDVGFSTGADQLFLVSPLTICHVIDAKSPFYDLSQRSMQTEQFEVVVILEGIVETTGMTCQARTSYTEDEVLWGHRFFPVISLEEGFFKVDYSQFHATFEVPTPPYSVKEQEEMLLMSSP 370
               SCOP domains d1n9pa_ A: G pr     o                                                                                                                              tein-gated inward rectifier Girk1                                                                                                                                                     SCOP domains
               CATH domains 1n9pA00 A:43-37     0                                                                                                                               G protein-activated inward rectifier potassium channel 1                                                                                                                             CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ............ee.-----.------------------------------------------------------------------------------------------------------------------------------..........eeeeee..eeeeeeee.......eeeeeeeeeeeeeee.....eeeeeeee..........eee....eeeeee............hhhhh...eeeeeeeeee........eeeeee...eee.eee...eee....eee.hhhh..eee......hhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1n9p A  43 RQRFVDKNGRCNVQH-----E------------------------------------------------------------------------------------------------------------------------------RAETLmFSEHAVISmRDGKLTLmFRVGNLRNSHmVSAQIRCKLLKSRQTPEGEFLPLDQLELDVGFSTGADQLFLVSPLTICHVIDAKSPFYDLSQRSmQTEQFEVVVILEGIVETTGmTCQARTSYTEDEVLWGHRFFPVISLEEGFFKVDYSQFHATFEVPTPPYSVKEQEEmLLmSSP 370
                                    52    |    -|        -         -         -         -         -         -         -         -         -         -         -         -       192  |    202 |     212       222|      232       242       252       262       272       282     | 292       302     | 312       322       332       342       352       362 |  |   
                                         57    63                                                                                                                            190    |      204-MSE 212-MSE    223-MSE                                                          288-MSE             308-MSE                                                 364-MSE  
                                                                                                                                                                                  195-MSE                                                                                                                                                                     367-MSE


Chain A from PDB  Type:PROTEIN  Length:197
 aligned with KCNJ3_RAT | P63251 from UniProtKB/Swiss-Prot  Length:501

    Alignment length:328
                                    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        
            KCNJ3_RAT    43 RQRFVDKNGRCNVQHGNLGSETSRYLSDLFTTLVDLKWRWNLFIFILTYTVAWLFMASMWWVIAYTRGDLNKAHVGNYTPCVANVYNFPSAFLFFIETEATIGYGYRYITDKCPEGIILFLFQSILGSIVDAFLIGCMFIKMSQPKKRAETLMFSEHAVISMRDGKLTLMFRVGNLRNSHMVSAQIRCKLLKSRQTPEGEFLPLDQLELDVGFSTGADQLFLVSPLTICHVIDAKSPFYDLSQRSMQTEQFEVVVILEGIVETTGMTCQARTSYTEDEVLWGHRFFPVISLEEGFFKVDYSQFHATFEVPTPPYSVKEQEEMLLMSSP 370
               SCOP domains d1n9pa_ A: G pr     o                                                                                                                              tein-gated inward rectifier Girk1                                                                                                                                                     SCOP domains
               CATH domains 1n9pA00 A:43-37     0                                                                                                                               G protein-activated inward rectifier potassium channel 1                                                                                                                             CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ............ee.-----.------------------------------------------------------------------------------------------------------------------------------..........eeeeee..eeeeeeee.......eeeeeeeeeeeeeee.....eeeeeeee..........eee....eeeeee............hhhhh...eeeeeeeeee........eeeeee...eee.eee...eee....eee.hhhh..eee......hhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.1  PDB: A:43-234 (gaps) UniProt: 1-234 [INCOMPLETE]                                                                                                                                      Exon 1.2  PDB: A:235-307 UniProt: 235-307                                --------------------------------------------------------------- Transcript 1 (1)
           Transcript 1 (2) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Exon 1.3  PDB: A:307-370 UniProt: 307-501 [INCOMPLETE]           Transcript 1 (2)
                 1n9p A  43 RQRFVDKNGRCNVQH-----E------------------------------------------------------------------------------------------------------------------------------RAETLmFSEHAVISmRDGKLTLmFRVGNLRNSHmVSAQIRCKLLKSRQTPEGEFLPLDQLELDVGFSTGADQLFLVSPLTICHVIDAKSPFYDLSQRSmQTEQFEVVVILEGIVETTGmTCQARTSYTEDEVLWGHRFFPVISLEEGFFKVDYSQFHATFEVPTPPYSVKEQEEmLLmSSP 370
                                    52    |    -|        -         -         -         -         -         -         -         -         -         -         -         -       192  |    202 |     212       222|      232       242       252       262       272       282     | 292       302     | 312       322       332       342       352       362 |  |   
                                         57    63                                                                                                                            190    |      204-MSE 212-MSE    223-MSE                                                          288-MSE             308-MSE                                                 364-MSE  
                                                                                                                                                                                  195-MSE                                                                                                                                                                     367-MSE
   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  (1, 1)

Asymmetric Unit
(-)
Class: All beta proteins (24004)

(-) CATH Domains  (1, 1)

Asymmetric Unit
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1N9P)

(-) Gene Ontology  (16, 31)

Asymmetric Unit(hide GO term definitions)
Chain A   (KCNJ3_RAT | P63251)
molecular function
    GO:0015467    G-protein activated inward rectifier potassium channel activity    Enables the transmembrane transfer of a potassium ion by an inwardly-rectifying voltage-gated channel, where the inward rectification is due to a voltage-dependent block of the channel pore by a G protein. An inwardly rectifying current-voltage relation is one where at any given driving force the inward flow of K+ ions exceeds the outward flow for the opposite driving force.
    GO:0005242    inward rectifier potassium channel activity    Enables the transmembrane transfer of a potassium ion by an inwardly-rectifying voltage-gated channel. An inwardly rectifying current-voltage relation is one where at any given driving force the inward flow of K+ ions exceeds the outward flow for the opposite driving force. The inward-rectification is due to a voltage-dependent block of the channel pore by a specific ligand or ligands, and as a result the macroscopic conductance depends on the difference between membrane voltage and the K+ equilibrium potential rather than on membrane voltage itself.
    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:0005244    voltage-gated ion channel activity    Enables the transmembrane transfer of an ion by a voltage-gated channel. An ion is an atom or group of atoms carrying an electric charge by virtue of having gained or lost one or more electrons. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.
biological process
    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:0010107    potassium ion import    The directed movement of potassium ions into a cell or organelle.
    GO:0006813    potassium ion transport    The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0034765    regulation of ion transmembrane transport    Any process that modulates the frequency, rate or extent of the directed movement of ions from one side of a membrane to the other.
    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: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:0030315    T-tubule    Invagination of the plasma membrane of a muscle cell that extends inward from the cell surface around each myofibril. The ends of T-tubules make contact with the sarcoplasmic reticulum membrane.
    GO:0009986    cell surface    The external part of the cell wall and/or plasma membrane.
    GO:0009897    external side of plasma membrane    The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.
    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.

Chain A   (KCNJ3_MOUSE | P63250)
molecular function
    GO:0015467    G-protein activated inward rectifier potassium channel activity    Enables the transmembrane transfer of a potassium ion by an inwardly-rectifying voltage-gated channel, where the inward rectification is due to a voltage-dependent block of the channel pore by a G protein. An inwardly rectifying current-voltage relation is one where at any given driving force the inward flow of K+ ions exceeds the outward flow for the opposite driving force.
    GO:0005242    inward rectifier potassium channel activity    Enables the transmembrane transfer of a potassium ion by an inwardly-rectifying voltage-gated channel. An inwardly rectifying current-voltage relation is one where at any given driving force the inward flow of K+ ions exceeds the outward flow for the opposite driving force. The inward-rectification is due to a voltage-dependent block of the channel pore by a specific ligand or ligands, and as a result the macroscopic conductance depends on the difference between membrane voltage and the K+ equilibrium potential rather than on membrane voltage itself.
    GO:0005244    voltage-gated ion channel activity    Enables the transmembrane transfer of an ion by a voltage-gated channel. An ion is an atom or group of atoms carrying an electric charge by virtue of having gained or lost one or more electrons. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.
biological process
    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:0010107    potassium ion import    The directed movement of potassium ions into a cell or organelle.
    GO:0006813    potassium ion transport    The directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
    GO:0034765    regulation of ion transmembrane transport    Any process that modulates the frequency, rate or extent of the directed movement of ions from one side of a membrane to the other.
    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: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:0030315    T-tubule    Invagination of the plasma membrane of a muscle cell that extends inward from the cell surface around each myofibril. The ends of T-tubules make contact with the sarcoplasmic reticulum membrane.
    GO:0009986    cell surface    The external part of the cell wall and/or plasma membrane.
    GO:0009897    external side of plasma membrane    The leaflet of the plasma membrane that faces away from the cytoplasm and any proteins embedded or anchored in it or attached to its surface.
    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.

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 Related Entries

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

UniProtKB/Swiss-Prot
        KCNJ3_MOUSE | P63250: 1u4e 2qks 3k6n
        KCNJ3_RAT | P63251: 1u4e

(-) Related Entries Specified in the PDB File

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