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(-) Description

Title :  CRYSTAL STRUCTURE OF NAK CHANNEL D66E MUTANT
 
Authors :  A. Alam, N. Shi, Y. Jiang
Date :  04 Jun 07  (Deposition) - 02 Oct 07  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.60
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A,B  (2x)
Keywords :  Inverted Teepee, Helix Bundle, Tetramer, Central Cavity, Ion Binding, Metal Transport, Membrane Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. Alam, N. Shi, Y. Jiang
Structural Insight Into Ca2+ Specificity In Tetrameric Cation Channels.
Proc. Natl. Acad. Sci. Usa V. 104 15334 2007
PubMed-ID: 17878296  |  Reference-DOI: 10.1073/PNAS.0707324104

(-) Compounds

Molecule 1 - POTASSIUM CHANNEL PROTEIN
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PQE60
    Expression System Strain: XL1-BLUE
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Mutation: YES
    Organism Scientific: BACILLUS CEREUS
    Organism Taxid: 1396

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit : AB
Biological Unit 1 (2x): AB

Summary Information (see also Sequences/Alignments below)

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

Asymmetric Unit (2, 5)
No.NameCountTypeFull Name
1CA2Ligand/IonCALCIUM ION
2NA3Ligand/IonSODIUM ION
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2NA-1Ligand/IonSODIUM ION

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETHR A:63 , VAL A:64 , THR B:63 , VAL B:64BINDING SITE FOR RESIDUE CA A 115
2AC2SOFTWARETHR A:63 , NA A:117 , THR B:63BINDING SITE FOR RESIDUE NA A 116
3AC3SOFTWARENA A:116BINDING SITE FOR RESIDUE NA A 117
4AC4SOFTWAREGLY A:67 , GLY B:67BINDING SITE FOR RESIDUE CA A 118

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2Q6A)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2Q6A)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2Q6A)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2Q6A)

(-) Exons   (0, 0)

(no "Exon" information available for 2Q6A)

(-) 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:104
 aligned with Q81HW2_BACCR | Q81HW2 from UniProtKB/TrEMBL  Length:114

    Alignment length:104
                                    10        20        30        40        50        60        70        80        90       100    
         Q81HW2_BACCR     1 MLSFLLTLKRMLRACLRAWKDKEFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGDGNFSPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQL 104
               SCOP domains -------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains 2q6aA00 A:1-104  [code=1.10.287.70, no name defined]                                                     CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------- Transcript
                 2q6a A   1 MLSFLLTLKRMLRACLRAWKDKEFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGEGNFSPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQL 104
                                    10        20        30        40        50        60        70        80        90       100    


Chain B from PDB  Type:PROTEIN  Length:103
 aligned with Q81HW2_BACCR | Q81HW2 from UniProtKB/TrEMBL  Length:114

    Alignment length:103
                                    10        20        30        40        50        60        70        80        90       100   
         Q81HW2_BACCR     1 MLSFLLTLKRMLRACLRAWKDKEFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGDGNFSPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQ 103
               SCOP domains ------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains 2q6aB00 B:1-103  [code=1.10.287.70, no name defined]                                                    CATH domains
           Pfam domains (1) ----------------------------Ion_trans_2-2q6aB01 B:29-103                                                Pfam domains (1)
           Pfam domains (2) ----------------------------Ion_trans_2-2q6aB02 B:29-103                                                Pfam domains (2)
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------- Transcript
                 2q6a B   1 MLSFLLTLKRMLRACLRAWKDKEFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGEGNFSPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQ 103
                                    10        20        30        40        50        60        70        80        90       100
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
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  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 2Q6A)

(-) CATH Domains  (1, 2)

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

(-) Pfam Domains  (1, 2)

Asymmetric Unit
(-)
Clan: Ion_channel (150)

(-) 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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  2q6a
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 Related Entries

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

UniProtKB/TrEMBL
        Q81HW2_BACCR | Q81HW2: 2ahy 2ahz 2q67 2q68 2q69 3e83 3e86 3e89 3e8b 3e8f 3e8g 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

2ahy WILD TYPE PROTEIN COMPLEX WITH K ION
2ahz WILD TYPE PROTEIN COMPLEX WITH NA ION
2q67
2q68
2q69