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(-) Description

Title :  NMR SOLUTION STRUCTURE OF BMK-BETAIT, AN EXCITATORY SCORPION TOXIN FROM BUTHUS MARTENSI KARSCH
 
Authors :  H. Wu, X. Tong, X. Chen, Q. Zhang, X. Zheng, N. Zhang, G. Wu
Date :  10 Jan 05  (Deposition) - 17 Jan 06  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  An Excitatory Scorpion Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  X. Tong, J. Yao, F. He, X. Chen, X. Zheng, C. Xie, G. Wu, N. Zhang, J. Ding, H. Wu
Nmr Solution Structure Of Bmk-Betait, An Excitatory Scorpion Beta-Toxin Without A 'Hot Spot' At The Relevant Position
Biochem. Biophys. Res. Commun. V. 349 890 2006
PubMed-ID: 16970911  |  Reference-DOI: 10.1016/J.BBRC.2006.08.131
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - EXCITATORY INSECT SELECTIVE TOXIN 1
    Chains: A
    Organism Common: CHINESE SCORPION
    Organism Scientific: MESOBUTHUS MARTENSII
    Organism Taxid: 34649
    Synonym: BMK IT1, BMKIT1, BMK IT, BMKIT, BM32-VI, NEUROTOXIN

 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 1WWN)

(-) Sites  (0, 0)

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(-) SS Bonds  (4, 4)

NMR Structure
No.Residues
1A:16 -A:37
2A:22 -A:42
3A:26 -A:44
4A:38 -A:64

(-) Cis Peptide Bonds  (0, 0)

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 Sequence-Structure Mapping

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(-) Exons   (0, 0)

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(-) 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:69
 aligned with SIX1_MESMA | O61668 from UniProtKB/Swiss-Prot  Length:88

    Alignment length:69
                                    28        38        48        58        68        78         
            SIX1_MESMA   19 KKNGYAVDSSGKVSECLLNNYCNNICTKVYYATSGYCCLLSCYCFGLDDDKAVLKIKDATKSYCDVQII 87
               SCOP domains d1wwna_ A: automated matches                                          SCOP domains
               CATH domains 1wwnA00 A:1-69  [code=3.30.30.10, no name defined]                    CATH domains
               Pfam domains -Toxin_3-1wwnA01 A:2-51                            ------------------ Pfam domains
         Sec.struct. author ..eee............hhhhhhhhhhhh....eeeee..eeeee...........hhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------- Transcript
                  1wwn A  1 KKNGYAVDSSGKVSECLLNNYCNNICTKVYYATSGYCCLLSCYCFGLDDDKAVLKIKDATKSYCDVQII 69
                                    10        20        30        40        50        60
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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  (1, 1)

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

(-) CATH Domains  (1, 1)

NMR Structure
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (1, 1)

NMR Structure
(-)
Clan: Knottin_1 (78)

(-) Gene Ontology  (3, 3)

NMR Structure(hide GO term definitions)
Chain A   (SIX1_MESMA | O61668)
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.
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 Specified in the PDB File

1bcg AN EXCITATORY SCORPION TOXIN WITH A DISTINCTIVE FEATURE: AN ADDITIONAL ALPHA HELIX AT THE C TERMINUS AND ITS IMPLICATIONS FOR INTERACTION WITH INSECT SODIUM CHANNELS
1npi TITYUS SERRULATUS NEUROTOXIN (TS1) AT ATOMIC RESOLUTION
1ptx CRYSTAL STRUCTURE OF TOXIN II FROM THE SCORPION ANDROCTONUS AUSTRALIS HECTOR REFINED AT 1.3 A RESOLUTION