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(-) Description

Title :  SOLUTION STRUCTURE OF THE SCORPION TOXIN ADWX-1
 
Authors :  S. J. Yin, L. Jiang, H. Yi, S. Han, D. W. Yang, M. L. Liu, H. Liu, Z. J. Cao, Y. L. Wu, W. X. Li
Date :  18 Jun 08  (Deposition) - 09 Dec 08  (Release) - 09 Dec 08  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Kv1. 1 Channel, Kv1. 3 Channel, Channel Turret, Adwx-1 Peptide Selectivity, Structural Basis, Amidation, Ionic Channel Inhibitor, Neurotoxin, Potassium Channel Inhibitor, Secreted, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. J. Yin, L. Jiang, H. Yi, S. Han, D. W. Yang, M. L. Liu, H. Liu, Z. J. Cao, Y. L. Wu, W. X. Li
Different Residues In Channel Turret Determining The Selectivity Of Adwx-1 Inhibitor Peptide Between Kv1. 1 And Kv1. 3 Channels
J. Proteome Res. V. 7 4890 2008
PubMed-ID: 18937510  |  Reference-DOI: 10.1021/PR800494A
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - POTASSIUM CHANNEL TOXIN ALPHA-KTX 3.6
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Strain: ROSETTA (DE3)
    Expression System Taxid: 562
    Expression System Vector: PGEX-6P-1
    Expression System Vector Type: VECTOR
    Mutation: YES
    Organism Common: CHINESE SCORPION
    Organism Scientific: MESOBUTHUS MARTENSII
    Organism Taxid: 34649
    Synonym: ADWX-1, KALIOTOXIN, BMKTX

 Structural Features

(-) Chains, Units

  
NMR Structure (20x): 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 2K4U)

(-) Sites  (0, 0)

(no "Site" information available for 2K4U)

(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:7 -A:27
2A:13 -A:32
3A:17 -A:34

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2K4U)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2K4U)

(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SCORP_SHORT_TOXINPS01138 Scorpion short toxins signature.KAX36_MESMA35-56  1A:13-34

(-) Exons   (0, 0)

(no "Exon" information available for 2K4U)

(-) Sequences/Alignments

NMR Structure
   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:37
 aligned with KAX36_MESMA | Q9NII7 from UniProtKB/Swiss-Prot  Length:60

    Alignment length:37
                                    32        42        52       
           KAX36_MESMA   23 VGINVKCKHSGQCLKPCKDAGMRFGKCINGKCDCTPK 59
               SCOP domains d2k4ua_ A: automated matches          SCOP domains
               CATH domains ------------------------------------- CATH domains
               Pfam domains ------------------------------------- Pfam domains
         Sec.struct. author .........hhhhhhhhhhhh..eeeee..eeeee.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------- SAPs(SNPs)
                    PROSITE ------------SCORP_SHORT_TOXIN     --- PROSITE
                 Transcript ------------------------------------- Transcript
                  2k4u A  1 VGINVKCKHSRQCLKPCKDAGMRFGKCTNGKCHCTPK 37
                                    10        20        30
   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, 1)

NMR Structure
(-)
Class: Small proteins (3458)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2K4U)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2K4U)

(-) Gene Ontology  (5, 5)

NMR Structure(hide GO term definitions)
Chain A   (KAX36_MESMA | Q9NII7)
molecular function
    GO:0008200    ion channel inhibitor activity    Stops, prevents, or reduces the activity of an ion channel.
    GO:0019870    potassium channel inhibitor activity    Stops, prevents, or reduces the activity of a potassium channel.
biological process
    GO:0006952    defense response    Reactions, triggered in response to the presence of a foreign body or the occurrence of an injury, which result in restriction of damage to the organism attacked or prevention/recovery from the infection caused by the attack.
    GO:0009405    pathogenesis    The set of specific processes that generate the ability of an organism to induce an abnormal, generally detrimental state in another organism.
cellular component
    GO:0005576    extracellular region    The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

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 Related Entries

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

UniProtKB/Swiss-Prot
        KAX36_MESMA | Q9NII7: 1bkt 2mla 2mld

(-) Related Entries Specified in the PDB File

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