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(-) Description

Title :  CRYSTAL STRUCTURE OF THE THE OPEN NAK CHANNEL-NA+/CA2+ COMPLEX
 
Authors :  Y. Jiang, A. Alam
Date :  19 Aug 08  (Deposition) - 23 Dec 08  (Release) - 16 Nov 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (4x)
Biol. Unit 2:  B  (4x)
Keywords :  Non-Selective Cation Channel, Membrane Protein, Tetrameric Cation Channel Family, 2-Transmembrane Helix Channels, Ionic Channel (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  A. Alam, Y. Jiang
Structural Analysis Of Ion Selectivity In The Nak Channel
Nat. Struct. Mol. Biol. V. 16 35 2009
PubMed-ID: 19098915  |  Reference-DOI: 10.1038/NSMB.1537

(-) Compounds

Molecule 1 - POTASSIUM CHANNEL PROTEIN
    Atcc14579
    ChainsA, B
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPQE60
    Expression System StrainSG13009
    Expression System Taxid562
    FragmentTRANSMEMBRANE DOMAIN, RESIDUES 19-110
    Organism ScientificBACILLUS CEREUS
    Organism Taxid1396

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (4x)A 
Biological Unit 2 (4x) B

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (4, 11)

Asymmetric Unit (4, 11)
No.NameCountTypeFull Name
1CA2Ligand/IonCALCIUM ION
2CS2Ligand/IonCESIUM ION
3MPD3Ligand/Ion(4S)-2-METHYL-2,4-PENTANEDIOL
4NA4Ligand/IonSODIUM ION
Biological Unit 1 (1, 8)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2CS-1Ligand/IonCESIUM ION
3MPD8Ligand/Ion(4S)-2-METHYL-2,4-PENTANEDIOL
4NA-1Ligand/IonSODIUM ION
Biological Unit 2 (1, 4)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2CS-1Ligand/IonCESIUM ION
3MPD4Ligand/Ion(4S)-2-METHYL-2,4-PENTANEDIOL
4NA-1Ligand/IonSODIUM ION

(-) Sites  (11, 11)

Asymmetric Unit (11, 11)
No.NameEvidenceResiduesDescription
01AC1SOFTWARETYR A:55 , ASP A:66 , PHE A:69BINDING SITE FOR RESIDUE MPD A 501
02AC2SOFTWAREPHE A:79 , LEU B:33 , ILE B:36 , SER B:37BINDING SITE FOR RESIDUE MPD A 503
03AC3SOFTWARENA A:8 , THR A:63 , VAL A:64BINDING SITE FOR RESIDUE CS A 1
04AC4SOFTWAREGLY A:67BINDING SITE FOR RESIDUE CA A 3
05AC5SOFTWARETHR A:63 , HOH A:504BINDING SITE FOR RESIDUE NA A 5
06AC6SOFTWARECS A:1 , VAL A:64BINDING SITE FOR RESIDUE NA A 8
07AC7SOFTWARESER B:37 , PHE B:79BINDING SITE FOR RESIDUE MPD B 502
08AC8SOFTWARENA B:7 , THR B:63 , VAL B:64BINDING SITE FOR RESIDUE CS B 2
09AC9SOFTWAREGLY B:67BINDING SITE FOR RESIDUE CA B 4
10BC1SOFTWARETHR B:63 , HOH B:503BINDING SITE FOR RESIDUE NA B 6
11BC2SOFTWARECS B:2 , VAL B:64BINDING SITE FOR RESIDUE NA B 7

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3E8G)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3E8G)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3E8G)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3E8G)

(-) Exons   (0, 0)

(no "Exon" information available for 3E8G)

(-) 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:91
 aligned with Q81HW2_BACCR | Q81HW2 from UniProtKB/TrEMBL  Length:114

    Alignment length:91
                                    32        42        52        62        72        82        92       102       112 
         Q81HW2_BACCR    23 EFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGDGNFSPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQLPSILSNRKK 113
               SCOP domains ------------------------------------------------------------------------------------------- SCOP domains
               CATH domains 3e8gA00 A:23-113  [code=1.10.287.70, no name defined]                                       CATH domains
               Pfam domains ------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------- Transcript
                 3e8g A  23 EFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGDGNFSPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQLPSILSNLVP 113
                                    32        42        52        62        72        82        92       102       112 

Chain B from PDB  Type:PROTEIN  Length:96
 aligned with Q81HW2_BACCR | Q81HW2 from UniProtKB/TrEMBL  Length:114

    Alignment length:96
                                    28        38        48        58        68        78        88        98       108      
         Q81HW2_BACCR    19 WKDKEFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGDGNFSPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQLPSILSNRKKE 114
               SCOP domains ------------------------------------------------------------------------------------------------ SCOP domains
               CATH domains 3e8gB00 B:19-114  [code=1.10.287.70, no name defined]                                            CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------ Transcript
                 3e8g B  19 WKDKEFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGDGNFSPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQLPSILSNLVPR 114
                                    28        38        48        58        68        78        88        98       108      

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  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 3E8G)

(-) CATH Domains  (1, 2)

Asymmetric Unit

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3E8G)

(-) Gene Ontology  (2, 2)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (Q81HW2_BACCR | Q81HW2)
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.

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 Related Entries

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

UniProtKB/TrEMBL
        Q81HW2_BACCR | Q81HW22ahy 2ahz 2q67 2q68 2q69 2q6a 3e83 3e86 3e89 3e8b 3e8f 3e8h 3k03 3k04 3k06 3k08 3k0d 3k0g 3t1c 3t2m 3t4d 3t4z 3tcu 3tet 4pdl 4pdm 4pdr 4pdv 4r50 4r6z 4r7c 4r8c 4rai 4ro2 4zbm

(-) Related Entries Specified in the PDB File

3e83 3e86 3e89 3e8b 3e8f 3e8h