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(-) Description

Title :  SOLUTION STRUCTURE OF TOXIN 2 FROM CENTRUROIDES NOXIUS HOFFMANN, A BETA SCORPION NEUROTOXIN ACTING ON SODIUM CHANNELS, NMR, 15 STRUCTURES
 
Authors :  A. Pintar, L. D. Possani, M. Delepierre
Date :  21 Jun 98  (Deposition) - 13 Jan 99  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (15x)
Keywords :  Neurotoxin, Scorpion Toxin, Centruroides Noxius, Sodium Channels (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. Pintar, L. D. Possani, M. Delepierre
Solution Structure Of Toxin 2 From Centruroides Noxius Hoffmann, A Beta-Scorpion Neurotoxin Acting On Sodium Channels.
J. Mol. Biol. V. 287 359 1999
PubMed-ID: 10080898  |  Reference-DOI: 10.1006/JMBI.1999.2611
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - TOXIN 2
    Chains: A
    Organism Common: MEXICAN SCORPION
    Organism Scientific: CENTRUROIDES NOXIUS
    Organism Taxid: 6878
    Secretion: VENOM
    Synonym: CN2

 Structural Features

(-) Chains, Units

  
NMR Structure (15x): 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 1)

NMR Structure (1, 1)
No.NameCountTypeFull Name
1NH21Mod. Amino AcidAMINO GROUP

(-) Sites  (1, 1)

NMR Structure (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWARECYS A:65 , SER A:66BINDING SITE FOR RESIDUE NH2 A 67

(-) SS Bonds  (4, 4)

NMR Structure
No.Residues
1A:12 -A:65
2A:16 -A:41
3A:25 -A:46
4A:29 -A:48

(-) Cis Peptide Bonds  (1, 15)

NMR Structure
No.ModelResidues
11, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15Trp A:58 -Pro A:59

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1CN2)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1CN2)

(-) Exons   (0, 0)

(no "Exon" information available for 1CN2)

(-) 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:67
 aligned with SCX2_CENNO | P01495 from UniProtKB/Swiss-Prot  Length:84

    Alignment length:67
                                    26        36        46        56        66        76       
            SCX2_CENNO   17 KEGYLVDKNTGCKYECLKLGDNDYCLRECKQQYGKGAGGYCYAFACWCTHLYEQAIVWPLPNKRCSG 83
               SCOP domains d1cn2a_ A: Scorpion toxin                                           SCOP domains
               CATH domains 1cn2A00 A:1-66  [code=3.30.30.10, no name defined]                - CATH domains
               Pfam domains ------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..ee...................hhhhhhh........eeee..eeee................... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------- Transcript
                  1cn2 A  1 KEGYLVDKNTGCKYECLKLGDNDYCLRECKQQYGKGAGGYCYAFACWCTHLYEQAIVWPLPNKRCSx 67
                                    10        20        30        40        50        60      |
                                                                                             67-NH2
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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  (1, 1)

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

(-) CATH Domains  (1, 1)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1CN2)

(-) Gene Ontology  (3, 3)

NMR Structure(hide GO term definitions)
Chain A   (SCX2_CENNO | P01495)
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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  1cn2
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 Related Entries

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

UniProtKB/Swiss-Prot
        SCX2_CENNO | P01495: 2ybr 2yc1 4v1d

(-) Related Entries Specified in the PDB File

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