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Title :  N-TERMINAL DOMAIN, VOLTAGE-GATED POTASSIUM CHANNEL KV1.2 RESIDUES 33-131
 
Authors :  D. L. Minor Jr. , Y. -F. Lin, B. C. Mobley, M. Yu, Y. N. Jan, L. Y. Jan, J. M. Berger
Date :  10 Jul 99  (Deposition) - 20 Sep 00  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.60
Chains :  Asym./Biol. Unit :  A,B,C,D
Keywords :  Voltage-Gated Potassium Channel, Tetramerization Domain, Intracellular Gate, Tetramer, Signaling Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  D. L. Minor, Y. F. Lin, B. C. Mobley, A. Avelar, Y. N. Jan, L. Y. Jan, J. M. Berger
The Polar T1 Interface Is Linked To Conformational Changes That Open The Voltage-Gated Potassium Channel.
Cell(Cambridge, Mass. ) V. 102 657 2000
PubMed-ID: 11007484  |  Reference-DOI: 10.1016/S0092-8674(00)00088-X
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - KV1.2 VOLTAGE-GATED POTASSIUM CHANNEL
    ChainsA, B, C, D
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET24B
    Expression System Taxid562
    Expression System Vector TypePLASMID
    FragmentN-TERMINAL DOMAIN, RESIDUES 33-131
    OrganBRAIN
    Organism CommonNORWAY RAT
    Organism ScientificRATTUS NORVEGICUS
    Organism Taxid10116

 Structural Features

(-) Chains, Units

  1234
Asymmetric/Biological Unit ABCD

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1QDV)

(-) Sites  (0, 0)

(no "Site" information available for 1QDV)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (1, 4)

Asymmetric/Biological Unit (1, 4)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1ENSRNOT000000501491ENSRNOE00000296875chr2:202560157-20256024993KCNA2_RAT-00--
1.2ENSRNOT000000501492ENSRNOE00000305050chr2:202561653-202561969317KCNA2_RAT-00--
1.3ENSRNOT000000501493ENSRNOE00000300674chr2:202562393-2025643051913KCNA2_RAT1-5565564A:33-131
B:33-131
C:33-131
D:33-131
99
99
99
99

(-) 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    
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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:99
 aligned with KCNA2_RAT | P63142 from UniProtKB/Swiss-Prot  Length:499

    Alignment length:99
                                    42        52        62        72        82        92       102       112       122         
            KCNA2_RAT    33 ERVVINISGLRFETQLKTLAQFPETLLGDPKKRMRYFDPLRNEYFFDRNRPSFDAILYYYQSGGRLRRPVNVPLDIFSEEIRFYELGEEAMEMFREDEG 131
               SCOP domains d1qdva_ A: Kv1.2                                                                                    SCOP domains
               CATH domains 1qdvA00 A:33-131 Potassium Channel Kv1.1; Chain A                                                   CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee..eeeeeehhhhh........hhhhhh..ee....eeee..hhhhhhhhhhhhhh..........hhhhhhhhhhhh..hhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.3  PDB: A:33-131 UniProt: 1-556 [INCOMPLETE]                                                 Transcript 1
                 1qdv A  33 ERVVINISGLRFETQLKTLAQFPETLLGDPKKRMRYFDPLRNEYFFDRNRPSFDAILYYYQSGGRLRRPVNVPLDIFSEEIRFYELGEEAMEMFREDEG 131
                                    42        52        62        72        82        92       102       112       122         

Chain B from PDB  Type:PROTEIN  Length:99
 aligned with KCNA2_RAT | P63142 from UniProtKB/Swiss-Prot  Length:499

    Alignment length:99
                                    42        52        62        72        82        92       102       112       122         
            KCNA2_RAT    33 ERVVINISGLRFETQLKTLAQFPETLLGDPKKRMRYFDPLRNEYFFDRNRPSFDAILYYYQSGGRLRRPVNVPLDIFSEEIRFYELGEEAMEMFREDEG 131
               SCOP domains d1qdvb_ B: Kv1.2                                                                                    SCOP domains
               CATH domains 1qdvB00 B:33-131 Potassium Channel Kv1.1; Chain A                                                   CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee..eeeeeehhhhhh.......hhhhhh..ee....eeee.....hhhhhhhhhhh..........hhhhhhhhhhhhh.hhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.3  PDB: B:33-131 UniProt: 1-556 [INCOMPLETE]                                                 Transcript 1
                 1qdv B  33 ERVVINISGLRFETQLKTLAQFPETLLGDPKKRMRYFDPLRNEYFFDRNRPSFDAILYYYQSGGRLRRPVNVPLDIFSEEIRFYELGEEAMEMFREDEG 131
                                    42        52        62        72        82        92       102       112       122         

Chain C from PDB  Type:PROTEIN  Length:99
 aligned with KCNA2_RAT | P63142 from UniProtKB/Swiss-Prot  Length:499

    Alignment length:99
                                    42        52        62        72        82        92       102       112       122         
            KCNA2_RAT    33 ERVVINISGLRFETQLKTLAQFPETLLGDPKKRMRYFDPLRNEYFFDRNRPSFDAILYYYQSGGRLRRPVNVPLDIFSEEIRFYELGEEAMEMFREDEG 131
               SCOP domains d1qdvc_ C: Kv1.2                                                                                    SCOP domains
               CATH domains 1qdvC00 C:33-131 Potassium Channel Kv1.1; Chain A                                                   CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee..eeeeeehhhhh........hhhhhh..ee....eeee..hhhhhhhhhhhhhh..........hhhhhhhhhhhh..hhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.3  PDB: C:33-131 UniProt: 1-556 [INCOMPLETE]                                                 Transcript 1
                 1qdv C  33 ERVVINISGLRFETQLKTLAQFPETLLGDPKKRMRYFDPLRNEYFFDRNRPSFDAILYYYQSGGRLRRPVNVPLDIFSEEIRFYELGEEAMEMFREDEG 131
                                    42        52        62        72        82        92       102       112       122         

Chain D from PDB  Type:PROTEIN  Length:99
 aligned with KCNA2_RAT | P63142 from UniProtKB/Swiss-Prot  Length:499

    Alignment length:99
                                    42        52        62        72        82        92       102       112       122         
            KCNA2_RAT    33 ERVVINISGLRFETQLKTLAQFPETLLGDPKKRMRYFDPLRNEYFFDRNRPSFDAILYYYQSGGRLRRPVNVPLDIFSEEIRFYELGEEAMEMFREDEG 131
               SCOP domains d1qdvd_ D: Kv1.2                                                                                    SCOP domains
               CATH domains 1qdvD00 D:33-131 Potassium Channel Kv1.1; Chain A                                                   CATH domains
           Pfam domains (1) --K_tetra-1qdvD01 D:35-126                                                                    ----- Pfam domains (1)
           Pfam domains (2) --K_tetra-1qdvD02 D:35-126                                                                    ----- Pfam domains (2)
           Pfam domains (3) --K_tetra-1qdvD03 D:35-126                                                                    ----- Pfam domains (3)
           Pfam domains (4) --K_tetra-1qdvD04 D:35-126                                                                    ----- Pfam domains (4)
         Sec.struct. author .eeeeee..eeeeeehhhhhh.......hhhhhh..ee....eeee.....hhhhhhhhhhh..........hhhhhhhhhhhh..hhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.3  PDB: D:33-131 UniProt: 1-556 [INCOMPLETE]                                                 Transcript 1
                 1qdv D  33 ERVVINISGLRFETQLKTLAQFPETLLGDPKKRMRYFDPLRNEYFFDRNRPSFDAILYYYQSGGRLRRPVNVPLDIFSEEIRFYELGEEAMEMFREDEG 131
                                    42        52        62        72        82        92       102       112       122         

   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, 4)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 4)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (1, 4)

Asymmetric/Biological Unit
(-)
Clan: POZ (36)

(-) Gene Ontology  (41, 41)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B,C,D   (KCNA2_RAT | P63142)
molecular function
    GO:0005251    delayed rectifier potassium channel activity    Enables the transmembrane transfer of a potassium ion by a delayed rectifying voltage-gated channel. A delayed rectifying current-voltage relation is one where channel activation kinetics are time-dependent, and inactivation is slow.
    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:0019894    kinesin binding    Interacting selectively and non-covalently and stoichiometrically with kinesin, a member of a superfamily of microtubule-based motor proteins that perform force-generating tasks such as organelle transport and chromosome segregation.
    GO:0015271    outward rectifier potassium channel activity    Enables the transmembrane transfer of a potassium ion by an outwardly-rectifying voltage-gated channel. An outwardly rectifying current-voltage relation is one where at any given driving force the outward flow of K+ ions exceeds the inward flow for the opposite driving force.
    GO:0005267    potassium channel activity    Enables the facilitated diffusion of a potassium ion (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel without evidence for a carrier-mediated mechanism.
    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.
    GO:0005249    voltage-gated potassium channel activity    Enables the transmembrane transfer of a potassium ion by a voltage-gated channel. 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:0019228    neuronal action potential    An action potential that occurs in a neuron.
    GO:0071805    potassium ion transmembrane transport    A process in which a potassium ion is transported from one side of a membrane to the other.
    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:0051260    protein homooligomerization    The process of creating protein oligomers, compounds composed of a small number, usually between three and ten, of identical component monomers. Oligomers may be formed by the polymerization of a number of monomers or the depolymerization of a large protein polymer.
    GO:0051259    protein oligomerization    The process of creating protein oligomers, compounds composed of a small number, usually between three and ten, of component monomers; protein oligomers may be composed of different or identical monomers. Oligomers may be formed by the polymerization of a number of monomers or the depolymerization of a large protein polymer.
    GO:0014059    regulation of dopamine secretion    Any process that modulates the frequency, rate or extent of the regulated release of dopamine.
    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:0019233    sensory perception of pain    The series of events required for an organism to receive a painful stimulus, convert it to a molecular signal, and recognize and characterize the signal. Pain is medically defined as the physical sensation of discomfort or distress caused by injury or illness, so can hence be described as a harmful stimulus which signals current (or impending) tissue damage. Pain may come from extremes of temperature, mechanical damage, electricity or from noxious chemical substances. This is a neurological process.
    GO:0055085    transmembrane transport    The process in which a solute is transported across a lipid bilayer, from one side of a membrane to the other
    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:0043679    axon terminus    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 button is a specialized region of it.
    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:0042995    cell projection    A prolongation or process extending from a cell, e.g. a flagellum or axon.
    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:0005789    endoplasmic reticulum membrane    The lipid bilayer surrounding the endoplasmic reticulum.
    GO:0005768    endosome    A vacuole to which materials ingested by endocytosis are delivered.
    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:0044224    juxtaparanode region of axon    A region of an axon near a node of Ranvier that is between the paranode and internode regions.
    GO:0030027    lamellipodium    A thin sheetlike process extended by the leading edge of a migrating cell or extending cell process; contains a dense meshwork of actin filaments.
    GO:0031258    lamellipodium membrane    The portion of the plasma membrane surrounding a lamellipodium.
    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:0032809    neuronal cell body membrane    The plasma membrane of a neuron cell body - excludes the plasma membrane of 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:0034705    potassium channel complex    An ion channel complex through which potassium ions pass.
    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:0008076    voltage-gated potassium channel complex    A protein complex that forms a transmembrane channel through which potassium ions may cross a cell membrane in response to changes in membrane potential.

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 Related Entries

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

UniProtKB/Swiss-Prot
        KCNA2_RAT | P631421dsx 1qdw 2a79 2r9r 3lnm 3lut 4jta 4jtc 4jtd

(-) Related Entries Specified in the PDB File

1dsx 1qdw