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(-) Description

Title :  CRYSTAL STRUCTURE OF THE HUMAN BK GATING APPARATUS
 
Authors :  P. Yuan, R. Mackinnon
Date :  30 Apr 10  (Deposition) - 09 Jun 10  (Release) - 01 Sep 10  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.00
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  A  (6x)
Keywords :  Potassium Channel, Membrane Protein, Transport Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  P. Yuan, M. D. Leonetti, A. R. Pico, Y. Hsiung, R. Mackinnon
Structure Of The Human Bk Channel Ca2+-Activation Apparatus At 3. 0 A Resolution.
Science V. 329 182 2010
PubMed-ID: 20508092  |  Reference-DOI: 10.1126/SCIENCE.1190414

(-) Compounds

Molecule 1 - POTASSIUM LARGE CONDUCTANCE CALCIUM-ACTIVATED CHANNEL, SUBFAMILY M, ALPHA MEMBER 1
    ChainsA
    EngineeredYES
    Expression SystemSPODOPTERA FRUGIPERDA
    Expression System CommonFALL ARMYWORM
    Expression System PlasmidPFASTBAC
    Expression System StrainSF9
    Expression System Taxid7108
    Expression System Vector TypeBACMID
    FragmentCYTOPLASMIC DOMAIN (UNP RESIDUED 356-1071)
    GeneKCNMA1, RP11-443A13.1-004
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit A
Biological Unit 1 (1x)A
Biological Unit 2 (6x)A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 2)

Asymmetric Unit (2, 2)
No.NameCountTypeFull Name
1CA1Ligand/IonCALCIUM ION
2SO41Ligand/IonSULFATE ION
Biological Unit 1 (1, 1)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2SO41Ligand/IonSULFATE ION
Biological Unit 2 (1, 6)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2SO46Ligand/IonSULFATE ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLN A:889 , ASP A:892 , ASP A:895 , ASP A:897BINDING SITE FOR RESIDUE CA A 2001
2AC2SOFTWAREGLN A:462 , TYR A:463 , HIS A:464 , ARG A:735 , ASN A:736BINDING SITE FOR RESIDUE SO4 A 2002

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3MT5)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3MT5)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 1)

Asymmetric Unit (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_023821D434GKCMA1_HUMANDisease (GEPD)137853333AD369G

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_023821D434GKCMA1_HUMANDisease (GEPD)137853333AD369G

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (1, 6)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_023821D434GKCMA1_HUMANDisease (GEPD)137853333AD369G

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3MT5)

(-) Exons   (0, 0)

(no "Exon" information available for 3MT5)

(-) 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:593
 aligned with KCMA1_HUMAN | Q12791 from UniProtKB/Swiss-Prot  Length:1236

    Alignment length:772
                                   417       427       437       447       457       467       477       487       497       507       517       527       537       547       557       567       577       587       597       607       617       627       637       647       657       667       677       687       697       707       717       727       737       747       757       767       777       787       797       807       817       827       837       847       857       867       877       887       897       907       917       927       937       947       957       967       977       987       997      1007      1017      1027      1037      1047      1057      1067      1077      1087      1097      1107      1117      1127      1137      1147      1157      1167      1177  
         KCMA1_HUMAN    408 KHIVVCGHITLESVSNFLKDFLHKDRDDVNVEIVFLHNISPNLELEALFKRHFTQVEFYQGSVLNPHDLARVKIESADACLILANKYCADPDAEDASNIMRVISIKNYHPKIRIITQMLQYHNKAHLLNIPSWNWKEGDDAICLAELKLGFIAQSCLAQGLSTMLANLFSMRSFIKIEEDTWQKYYLEGVSNEMYTEYLSSAFVGLSFPTVCELCFVKLKLLMIAIEYKSANRESRILINPGNHLKIQEGTLGFFIASDAKEVKRAFFYCKACHDDITDPKRIKKCGCKRPKMSIYKRMRRACCFDCGRSERDCSCMSGRVRGNVDTLERAFPLSSVSVNDCSTSFRAFEDEQPSTLSPKKKQRNGGMRNSPNTSPKLMRHDPLLIPGNDQIDNMDSNVKKYDSTGMFHWCAPKEIEKVILTRSEAAMTVLSGHVVVCIFGDVSSALIGLRNLVMPLRASNFHYHELKHIVFVGSIEYLKREWETLHNFPKVSILPGTPLSRADLRAVNINLCDMCVILSANQNNIDDTSLQDKECILASLNIKSMQFDDSIGVLQANSQGFTPPGMDRSSPDNSPVHGMLRQPSITTGVNIPIITELVNDTNVQFLDQDDDDDPDTELYLTQPFACGTAFAVSVLDSLMSATYFNDNILTLIRTLVTGGATPELEALIAEENALRGGYSTPQTLANRDRCRVAQLALLDGPFADLGDGGCYGDLFCKALKTYNMLCFGIYRLRDAHLSTPSQCTKRYVITNPPYEFELVPTDLIFCLMQFD 1179
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee..hhhhhhhhhhhhhhhh......eeeee.....hhhhhhhhhhhh..eeee.....hhhhhhhhhhhhh.eeeee......hhhhhhhhhhhhhhhhhhhh....eeeee.hhhhhhhhhhh.........eeeehhhhhhhhhhhhhhh.hhhhhhhh.............hhhhhhhhhhh.eeeeee.hhhhh..hhhhhhhhhhhh...eeeeee.------...ee............eeeeee.hhhhhhh......-------------------------------------------------------------------------------------------------------------------------..hhhhh..ee...........hhhhh..hhhhhhhh.....eeeeee.........hhhhhhhhhh...hhhhh..eeeeehhhhhhhhhhhhh....eeeee....hhhhhhhhhhhhh.eeeeee..----------hhhhhhhhhhhhh.ee.-----------------------------------..ee.hhh.eeeee.hhhhhh............hhhhhhhhhh..eee.hhhhhhhhhhhhhhhhhhhhhhhhh...---hhhhhhhhh...ee..hhhhhhh....eeeeee......hhhhh..hhhhhhhhhhhhh..eeeeeeee...----......eeeee............eeeeee... Sec.struct. author
                 SAPs(SNPs) --------------------------G------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                3mt5 A  343 KHIVVCGHITLESVSNFLKDFLHKDRDDVNVEIVFLHNISPNLELEALFKRHFTQVEFYQGSVLNPHDLARVKIESADACLILANKYCADPDAEDASNIMRVISIKNYHPKIRIITQMLQYHNKAHLLNIPSWNWKEGDDAICLAELKLGFIAQSCLAQGLSTMLANLFSMRSFIKIEEDTWQKYYLEGVSNEMYTEYLSSAFVGLSFPTVCELCFVKLKLLMIAIEY------SRILINPGNHLKIQEGTLGFFIASDAKEVKRAFFYCK-------------------------------------------------------------------------------------------------------------------------DNMDSNVKKYDSTGMFHWCAPKEIEKVILTRSEAAMTVLSGHVVVCIFGDVSSALIGLRNLVMPLRASNFHYHELKHIVFVGSIEYLKREWETLHNFPKVSILPGTPLSRADLRAVNINLCDMCVILSAN----------DKECILASLNIKSMQFD-----------------------------------SITTGVNIPIITELVNDTNVQFLDQDDDDDPDTELYLTQPFACGTAFAVSVLDSLMSATYFNDNILTLIRTLVTGGA---LEALIAEENALRGGYSTPQTLANRDRCRVAQLALLDGPFADLGDGGCYGDLFCKALKTYNMLCFGIYRLRDA----PSQCTKRYVITNPPYEFELVPTDLIFCLMQFD 1056
                                   352       362       372       382       392       402       412       422       432       442       452       462       472       482       492       502       512       522       532       542       552       562       | -    |  582       592       602       612|        -         -         -         -         -         -         -         -         -         -         -         -  |    684       694       704       714       724       734       744       754       764       774       784       794       804 |       -  |    824        |-         -         -         -    |  874       884       894       904       914       924       934       944|   |  954       964       974       984       994      1004      1014     |   -|     1034      1044      1054  
                                                                                                                                                                                                                                                             570    577                                 613                                                                                                                       677                                                                                                                              806        817             833                                 869                                                                         945 949                                                                   1020 1025                               

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 3MT5)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3MT5)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3MT5)

(-) Gene Ontology  (32, 32)

Asymmetric Unit(hide GO term definitions)
Chain A   (KCMA1_HUMAN | Q12791)
molecular function
    GO:0003779    actin binding    Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
    GO:0015269    calcium-activated potassium channel activity    Enables the calcium concentration-regulatable energy-independent passage of potassium ions across a lipid bilayer down a concentration gradient.
    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:0060072    large conductance calcium-activated potassium channel activity    Enables the transmembrane transfer of potassium by a channel with a unit conductance of 100 to 220 picoSiemens that opens in response to stimulus by concerted actions of internal calcium ions and membrane potential. Large conductance calcium-activated potassium channels are less sensitive to calcium than are small or intermediate conductance calcium-activated potassium channels. Transport by a channel involves catalysis of facilitated diffusion of a solute (by an energy-independent process) involving passage through a transmembrane aqueous pore or channel, without evidence for a carrier-mediated mechanism.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    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:0030007    cellular potassium ion homeostasis    Any process involved in the maintenance of an internal steady state of potassium ions at the level of a cell.
    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:0060073    micturition    The regulation of body fluids process in which parasympathetic nerves stimulate the bladder wall muscle to contract and expel urine from the body.
    GO:0045794    negative regulation of cell volume    Any process that decreases cell volume.
    GO:0043065    positive regulation of apoptotic process    Any process that activates or increases the frequency, rate or extent of cell death by apoptotic process.
    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: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:0042391    regulation of membrane potential    Any process that modulates the establishment or extent of a membrane potential, the electric potential existing across any membrane arising from charges in the membrane itself and from the charges present in the media on either side of the membrane.
    GO:0051592    response to calcium 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 calcium ion stimulus.
    GO:0034465    response to carbon monoxide    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 carbon monoxide (CO) stimulus.
    GO:0001666    response to hypoxia    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 stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level.
    GO:0006970    response to osmotic stress    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 stimulus indicating an increase or decrease in the concentration of solutes outside the organism or cell.
    GO:0060083    smooth muscle contraction involved in micturition    The process leading to shortening and/or development of tension in the urinary bladder smooth muscle tissue involved in the expulsion urine from the body.
    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:0016324    apical plasma membrane    The region of the plasma membrane located at the apical end of the cell.
    GO:0005901    caveola    A membrane raft that forms small pit, depression, or invagination that communicates with the outside of a cell and extends inward, indenting the cytoplasm and the cell membrane. Examples include flask-shaped invaginations of the plasma membrane in adipocytes associated with caveolin proteins, and minute pits or incuppings of the cell membrane formed during pinocytosis. Caveolae may be pinched off to form free vesicles within the cytoplasm.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    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: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: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)

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        KCMA1_HUMAN | Q127912k44 3naf

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