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(-) Description

Title :  CRYSTAL STRUCTURE OF VARIANT 2 SCORPION TOXIN FROM CENTRUROIDES SCULPTURATUS EWING
 
Authors :  W. J. Cook, A. Zell, D. D. Watt, S. E. Ealick
Date :  14 Sep 01  (Deposition) - 27 Feb 02  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.20
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Crystal Structure, Scorpion Toxin, Noncrystallographic Symmetry (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  W. J. Cook, A. Zell, D. D. Watt, S. E. Ealick
Structure Of Variant 2 Scorpion Toxin From Centruroides Sculpturatus Ewing.
Protein Sci. V. 11 479 2002
PubMed-ID: 11847271  |  Reference-DOI: 10.1110/PS.39202
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - NEUROTOXIN 2
    Chains: A, B
    Organism Common: BARK SCORPION
    Organism Scientific: CENTRUROIDES SCULPTURATUS
    Organism Taxid: 218467

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit : AB
Biological Unit 1 (1x): A 
Biological Unit 2 (1x):  B

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 1JZA)

(-) Sites  (0, 0)

(no "Site" information available for 1JZA)

(-) SS Bonds  (8, 8)

Asymmetric Unit
No.Residues
1A:12 -A:65
2A:16 -A:41
3A:25 -A:46
4A:29 -A:48
5B:12 -B:65
6B:16 -B:41
7B:25 -B:46
8B:29 -B:48

(-) Cis Peptide Bonds  (2, 2)

Asymmetric Unit
No.Residues
1Tyr A:58 -Pro A:59
2Tyr B:58 -Pro B:59

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (3, 6)

Asymmetric Unit (3, 6)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_SCX2_CENSC_002 *K20RSCX2_CENSC  ---  ---A/BK1R
2UniProtVAR_SCX2_CENSC_003 *G30ASCX2_CENSC  ---  ---A/BG11A
3UniProtVAR_SCX2_CENSC_004 *K51ESCX2_CENSC  ---  ---A/BK32E
   * ID not provided by source
  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (3, 3)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_SCX2_CENSC_002 *K20RSCX2_CENSC  ---  ---AK1R
2UniProtVAR_SCX2_CENSC_003 *G30ASCX2_CENSC  ---  ---AG11A
3UniProtVAR_SCX2_CENSC_004 *K51ESCX2_CENSC  ---  ---AK32E
   * ID not provided by source
  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (3, 3)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_SCX2_CENSC_002 *K20RSCX2_CENSC  ---  ---BK1R
2UniProtVAR_SCX2_CENSC_003 *G30ASCX2_CENSC  ---  ---BG11A
3UniProtVAR_SCX2_CENSC_004 *K51ESCX2_CENSC  ---  ---BK32E
   * ID not provided by source
  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (0, 0)

(no "Exon" information available for 1JZA)

(-) 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:66
 aligned with SCX2_CENSC | P01493 from UniProtKB/Swiss-Prot  Length:87

    Alignment length:66
                                    29        39        49        59        69        79      
            SCX2_CENSC   20 KEGYLVNKSTGCKYGCLKLGENEGCDKECKAKNQGGSYGYCYAFACWCEGLPESTPTYPLPNKSCS 85
               SCOP domains d1jzaa_ A: Scorpion toxin                                          SCOP domains
               CATH domains 1jzaA00 A:1-66  [code=3.30.30.10, no name defined]                 CATH domains
               Pfam domains ------------------------------------------------------------------ Pfam domains
         Sec.struct. author ..ee.................hhhhhhhhhh......eeee....eeee................. Sec.struct. author
                 SAPs(SNPs) R---------A--------------------E---------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------ Transcript
                  1jza A  1 KEGYLVNKSTGCKYGCLKLGENEGCDKECKAKNQGGSYGYCYAFACWCEGLPESTPTYPLPNKSCS 66
                                    10        20        30        40        50        60      


Chain B from PDB  Type:PROTEIN  Length:66
 aligned with SCX2_CENSC | P01493 from UniProtKB/Swiss-Prot  Length:87

    Alignment length:66
                                    29        39        49        59        69        79      
            SCX2_CENSC   20 KEGYLVNKSTGCKYGCLKLGENEGCDKECKAKNQGGSYGYCYAFACWCEGLPESTPTYPLPNKSCS 85
               SCOP domains d1jzab_ B: Scorpion toxin                                          SCOP domains
               CATH domains 1jzaB00 B:1-66  [code=3.30.30.10, no name defined]                 CATH domains
           Pfam domains (1) Toxin_3-1jzaB01 B:1-55                                 ----------- Pfam domains (1)
           Pfam domains (2) Toxin_3-1jzaB02 B:1-55                                 ----------- Pfam domains (2)
         Sec.struct. author ..ee.................hhhhhhhhhh......eeee....eeee................. Sec.struct. author
                 SAPs(SNPs) R---------A--------------------E---------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------ Transcript
                  1jza B  1 KEGYLVNKSTGCKYGCLKLGENEGCDKECKAKNQGGSYGYCYAFACWCEGLPESTPTYPLPNKSCS 66
                                    10        20        30        40        50        60
   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, 2)

Asymmetric Unit
(-)
Class: Small proteins (3458)

(-) CATH Domains  (1, 2)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (1, 2)

Asymmetric Unit
(-)
Clan: Knottin_1 (78)

(-) Gene Ontology  (3, 3)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (SCX2_CENSC | P01493)
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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    Tyr A:58 - Pro A:59   [ RasMol ]  
    Tyr B:58 - Pro B:59   [ RasMol ]  
 
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  1jza
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 Related Entries

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

UniProtKB/Swiss-Prot
        SCX2_CENSC | P01493: 1jzb

(-) Related Entries Specified in the PDB File

1jzb 1JZB CONTAINS THE SAME PROTEIN IN A DIFFERENT SPACE GROUP