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(-) Description

Title :  SOLUTION STRUCTURE OF AOSK1
 
Authors :  S. Alphonse, S. Mouhat, J. M. Sabatier, H. Darbon, C. Bernard
Date :  10 Apr 06  (Deposition) - 15 May 07  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Ion Channel Inhibitor, Potassium Channel Inhibitor, Ion Channel Blocker, Ionic Channel Inhibitor, Osk1, Toxin, Neurotoxin, Scorpio Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. Alphonse, S. Mouhat, J. M. Sabatier, H. Darbon, C. Bernard
Solution Structure Of Two Analogues Of The Osk1 Toxin
To Be Published
PubMed: search

(-) Compounds

Molecule 1 - POTASSIUM CHANNEL TOXIN ALPHA-KTX 3.7
    Chains: A
    Engineered: YES
    Mutation: YES
    Organism Common: CENTRAL ASIAN SCORPION
    Organism Scientific: ORTHOCHIRUS SCROBICULOSUS
    Organism Taxid: 6892
    Synonym: TOXIN OSK1, OSK-1
    Synthetic: YES

 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 2CK4)

(-) Sites  (0, 0)

(no "Site" information available for 2CK4)

(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:8 -A:28
2A:14 -A:33
3A:18 -A:35

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2CK4)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2CK4)

(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SCORP_SHORT_TOXINPS01138 Scorpion short toxins signature.KAX37_ORTSC14-35  1A:14-35

(-) Exons   (0, 0)

(no "Exon" information available for 2CK4)

(-) 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:38
 aligned with KAX37_ORTSC | P55896 from UniProtKB/Swiss-Prot  Length:38

    Alignment length:38
                                    10        20        30        
           KAX37_ORTSC    1 GVIINVKCKISRQCLEPCKKAGMRFGKCMNGKCHCTPK 38
               SCOP domains -------------------------------------- SCOP domains
               CATH domains -------------------------------------- CATH domains
               Pfam domains -------------------------------------- Pfam domains
         Sec.struct. author .eee......hhhhhhhhhh......eee..eeee... Sec.struct. author
                 SAPs(SNPs) -------------------------------------- SAPs(SNPs)
                    PROSITE -------------SCORP_SHORT_TOXIN     --- PROSITE
                 Transcript -------------------------------------- Transcript
                  2ck4 A  1 GVIINVKCKISRQCLKPCKDAGMRFGKCMNGKCHCTPK 38
                                    10        20        30
   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 2CK4)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2CK4)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2CK4)

(-) Gene Ontology  (4, 4)

NMR Structure(hide GO term definitions)
Chain A   (KAX37_ORTSC | P55896)
molecular function
    GO:0008200    ion channel inhibitor activity    Stops, prevents, or reduces the activity of an ion 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
        KAX37_ORTSC | P55896: 1sco 2ck5

(-) Related Entries Specified in the PDB File

1sco SCORPION TOXIN (OSK1 TOXIN) WITH HIGH AFFINITY FOR SMALL CONDUCTANCE CA(2+)- ACTIVATED K+ CHANNEL IN NEUROBLASTOMA-X- GLUOMA NG 108-15 HYBRID CELLS, NMR, 30 STRUCTURES
2ck5 SOLUTION STRUCTURE OF DELTA 1-7 AOSK1