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(-) Description

Title :  KCSA POTASSIUM CHANNEL WITH TBA (TETRABUTYLAMMONIUM) AND POTASSIUM
 
Authors :  J. H. Morais-Cabral, R. Mackinnon, M. Zhou
Date :  23 May 01  (Deposition) - 13 Jun 01  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.80
Chains :  Asym./Biol. Unit :  A,B,C,D
Keywords :  Membrane Protein, Metal Transport (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. Zhou, J. H. Morais-Cabral, S. Mann, R. Mackinnon
Potassium Channel Receptor Site For The Inactivation Gate And Quaternary Amine Inhibitors
Nature V. 411 657 2001
PubMed-ID: 11395760  |  Reference-DOI: 10.1038/35079500
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - VOLTAGE-GATED POTASSIUM CHANNEL
    Chains: A, B, C, D
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PQE60
    Expression System Strain: XL1-BLUE
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Fragment: RESIDUES 1-125
    Mutation: YES
    Organism Scientific: STREPTOMYCES LIVIDANS
    Organism Taxid: 1916

 Structural Features

(-) Chains, Units

  1234
Asymmetric/Biological Unit : ABCD

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 5)

Asymmetric/Biological Unit (2, 5)
No.NameCountTypeFull Name
1K4Ligand/IonPOTASSIUM ION
2TBA1Ligand/IonTETRABUTYLAMMONIUM ION

(-) Sites  (5, 5)

Asymmetric Unit (5, 5)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLY A:77 , TYR A:78 , K A:202 , GLY B:77 , TYR B:78 , GLY C:77 , TYR C:78 , GLY D:77 , TYR D:78BINDING SITE FOR RESIDUE K A 201
2AC2SOFTWAREVAL A:76 , GLY A:77 , K A:201 , K A:203 , VAL B:76 , GLY B:77 , VAL C:76 , GLY C:77 , VAL D:76 , GLY D:77BINDING SITE FOR RESIDUE K A 202
3AC3SOFTWARETHR A:75 , VAL A:76 , K A:202 , THR B:75 , VAL B:76 , K B:204 , THR C:75 , VAL C:76 , THR D:75 , VAL D:76BINDING SITE FOR RESIDUE K A 203
4AC4SOFTWARETHR A:75 , K A:203 , THR B:75 , THR C:75 , THR D:75BINDING SITE FOR RESIDUE K B 204
5AC5SOFTWARETHR A:75 , THR D:75BINDING SITE FOR RESIDUE TBA A 204

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1J95)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1J95)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1J95)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1J95)

(-) Exons   (0, 0)

(no "Exon" information available for 1J95)

(-) 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    
   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:98
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:98
                                    33        43        53        63        73        83        93       103       113        
           KCSA_STRLI    24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQER 121
               SCOP domains d1j95a_ A: Potassium channel protein                                                               SCOP domains
               CATH domains 1j95A00 A:24-121  [code=1.10.287.70, no name defined]                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------- Transcript
                 1j95 A  24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQER 121
                                    33        43        53        63        73        83        93       103       113        


Chain B from PDB  Type:PROTEIN  Length:98
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:98
                                    33        43        53        63        73        83        93       103       113        
           KCSA_STRLI    24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQER 121
               SCOP domains d1j95b_ B: Potassium channel protein                                                               SCOP domains
               CATH domains 1j95B00 B:24-121  [code=1.10.287.70, no name defined]                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------- Transcript
                 1j95 B  24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQER 121
                                    33        43        53        63        73        83        93       103       113        


Chain C from PDB  Type:PROTEIN  Length:98
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:98
                                    33        43        53        63        73        83        93       103       113        
           KCSA_STRLI    24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQER 121
               SCOP domains d1j95c_ C: Potassium channel protein                                                               SCOP domains
               CATH domains 1j95C00 C:24-121  [code=1.10.287.70, no name defined]                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhh.............hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------- Transcript
                 1j95 C  24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQER 121
                                    33        43        53        63        73        83        93       103       113        


Chain D from PDB  Type:PROTEIN  Length:98
 aligned with KCSA_STRLI | P0A334 from UniProtKB/Swiss-Prot  Length:160

    Alignment length:98
                                    33        43        53        63        73        83        93       103       113        
           KCSA_STRLI    24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRLVAVVVMVAGITSFGLVTAALATWFVGREQER 121
               SCOP domains d1j95d_ D: Potassium channel protein                                                               SCOP domains
               CATH domains 1j95D00 D:24-121  [code=1.10.287.70, no name defined]                                              CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhhhhh........hhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------- Transcript
                 1j95 D  24 LHWRAAGAATVLLVIVLLAGSYLAVLAERGAPGAQLITYPRALWWSVETATTVGYGDLYPVTLWGRCVAVVVMVAGITSFGLVTAALATWFVGREQER 121
                                    33        43        53        63        73        83        93       103       113
   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
(-)
Class: Membrane and cell surface proteins and peptides (2046)

(-) CATH Domains  (1, 4)

Asymmetric/Biological Unit
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1J95)

(-) Gene Ontology  (10, 10)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B,C,D   (KCSA_STRLI | P0A334)
molecular function
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    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: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: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: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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  1j95
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 Related Entries

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

UniProtKB/Swiss-Prot
        KCSA_STRLI | P0A334: 1bl8 1f6g 1jq1 1jq2 1jvm 1k4c 1k4d 1r3i 1r3j 1r3k 1r3l 1s33 1s5h 1zwi 2a9h 2atk 2bob 2boc 2dwd 2dwe 2h8p 2hg5 2hjf 2hvj 2hvk 2ih1 2ih3 2itc 2itd 2jk5 2nlj 2p7t 2qto 2w0f 3eff 3f5w 3f7v 3f7y 3fb5 3fb6 3fb7 3fb8 3gb7 3hpl 3ifx 3iga 3ogc 3or6 3or7 3pjs 3stl 3stz 4lbe 4lcu 4msw 4uuj 5e1a 5ebl 5ebm 5ebw 5ec1 5ec2 5j9p

(-) Related Entries Specified in the PDB File

1bl8 POTASSIUM CHANNEL (KCSA) FROM STREPTOMYCES LIVIDAN