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(-) Description

Title :  CRYSTAL STRUCTURE OF CNG MIMICKING NAK MUTANT, NAK-ETPP, K+ COMPLEX
 
Authors :  Y. Jiang, M. G. Derebe
Date :  24 Sep 09  (Deposition) - 12 Jan 11  (Release) - 26 Jan 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.95
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (4x)
Biol. Unit 2:  B  (4x)
Keywords :  Nak-Etpp, Etpp, Nak, Cng Mimicking, Cng Channel Selectivity Filter, Nak-Mutant, Ionic Channel, Transport Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. G. Derebe, W. Zeng, Y. Li, A. Alam, Y. Jiang
Structural Studies Of Ion Permeation And Ca2+ Blockage Of A Bacterial Channel Mimicking The Cyclic Nucleotide-Gated Channel Pore.
Proc. Natl. Acad. Sci. Usa V. 108 592 2011
PubMed-ID: 21187429  |  Reference-DOI: 10.1073/PNAS.1013643108

(-) Compounds

Molecule 1 - POTASSIUM CHANNEL PROTEIN NAK
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Organism Scientific: BACILLUS CEREUS
    Organism Taxid: 1396

 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  (2, 13)

Asymmetric Unit (2, 13)
No.NameCountTypeFull Name
1K9Ligand/IonPOTASSIUM ION
2MPD4Ligand/Ion(4S)-2-METHYL-2,4-PENTANEDIOL
Biological Unit 1 (1, 12)
No.NameCountTypeFull Name
1K-1Ligand/IonPOTASSIUM ION
2MPD12Ligand/Ion(4S)-2-METHYL-2,4-PENTANEDIOL
Biological Unit 2 (1, 4)
No.NameCountTypeFull Name
1K-1Ligand/IonPOTASSIUM ION
2MPD4Ligand/Ion(4S)-2-METHYL-2,4-PENTANEDIOL

(-) Sites  (12, 12)

Asymmetric Unit (12, 12)
No.NameEvidenceResiduesDescription
01AC1SOFTWAREGLU A:46 , LEU A:48 , PHE A:56 , PRO A:69 , PRO A:70 , GLN A:71 , MPD A:504BINDING SITE FOR RESIDUE MPD A 501
02AC2SOFTWAREPHE A:78 , LEU B:33 , ILE B:36 , SER B:37BINDING SITE FOR RESIDUE MPD A 502
03AC3SOFTWARETYR A:55 , THR A:67 , PRO A:68 , MPD A:501BINDING SITE FOR RESIDUE MPD A 504
04AC4SOFTWAREK A:5 , THR A:63BINDING SITE FOR RESIDUE K A 4
05AC5SOFTWAREK A:4 , K A:8 , THR A:63 , VAL A:64BINDING SITE FOR RESIDUE K A 5
06AC6SOFTWAREK A:8 , GLY A:65BINDING SITE FOR RESIDUE K A 6
07AC7SOFTWAREK A:5 , K A:6 , VAL A:64 , GLY A:65BINDING SITE FOR RESIDUE K A 8
08AC8SOFTWARELEU B:81BINDING SITE FOR RESIDUE MPD B 503
09AC9SOFTWAREK B:2 , K B:7 , THR B:63 , VAL B:64BINDING SITE FOR RESIDUE K B 1
10BC1SOFTWAREK B:1 , THR B:63BINDING SITE FOR RESIDUE K B 2
11BC2SOFTWAREK B:7 , GLY B:65 , HOH B:138BINDING SITE FOR RESIDUE K B 3
12BC3SOFTWAREK B:1 , K B:3 , VAL B:64 , GLY B:65BINDING SITE FOR RESIDUE K B 7

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3K0D)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3K0D)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3K0D)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3K0D)

(-) Exons   (0, 0)

(no "Exon" information available for 3K0D)

(-) 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:90
 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 ------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhh......-...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------- Transcript
                 3k0d A  23 EFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGETP-PPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQLPSILSNLVP 112
                                    32        42        52        62     | |71        81        91       101       111 
                                                                        68 |                                           
                                                                          69                                           


Chain B from PDB  Type:PROTEIN  Length:95
 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 ------------------------------------------------------------------------------------------------ CATH domains
           Pfam domains (1) ----------Ion_trans_2-3k0dB01 B:29-102            -                                  ----------- Pfam domains (1)
           Pfam domains (2) ----------Ion_trans_2-3k0dB02 B:29-102            -                                  ----------- Pfam domains (2)
         Sec.struct. author hhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhh......-...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------ Transcript
                 3k0d B  19 AKDKEFQVLFVLTILTLISGTIFYSTVEGLRPIDALYFSVVTLTTVGETP-PPQTDFGKIFTILYIFIGIGLVFGFIHKLAVNVQLPSILSNLVPR 113
                                    28        38        48        58        68 |      77        87        97       107      
                                                                            68 |                                            
                                                                              69
   Legend:   → Mismatch (orange background)
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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 3K0D)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3K0D)

(-) 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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 Related Entries

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

UniProtKB/TrEMBL
        Q81HW2_BACCR | Q81HW2: 2ahy 2ahz 2q67 2q68 2q69 2q6a 3e83 3e86 3e89 3e8b 3e8f 3e8g 3e8h 3k03 3k04 3k06 3k08 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

3k03 3k04 3k06 3k08 3k0g