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(-) Description

Title :  THREE-DIMENSIONAL STRUCTURE OF A NEUROTOXIN FROM RED SCORPION (BUTHUS TAMULUS) AT 2.2A RESOLUTION.
 
Authors :  M. Sharma, S. Yadav, S. Karthikeyan, S. Kumar, M. Paramasivam, A. Srinivasan, T. P. Singh
Date :  30 Dec 99  (Deposition) - 30 Dec 00  (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 :  Red Scorpion Neurotoxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. Sharma, S. Yadav, S. Karthikeyan, S. Kumar, M. Paramasivam, A. Srinivasan, T. P. Singh
Three-Dimensional Structure Of A Neurotoxin From Red Scorpion (Buthus Tamulus) At 2. 2A Resolution
To Be Published
PubMed: search
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - NEUROTOXIN
    Chains: A, B
    Organism Common: INDIAN RED SCORPION
    Organism Scientific: MESOBUTHUS TAMULUS
    Organism Taxid: 34647
    Secretion: VENOM

 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 1DQ7)

(-) Sites  (0, 0)

(no "Site" information available for 1DQ7)

(-) SS Bonds  (8, 8)

Asymmetric Unit
No.Residues
1A:12 -A:63
2A:16 -A:36
3A:22 -A:46
4A:26 -A:48
5B:12 -B:63
6B:16 -B:36
7B:22 -B:46
8B:26 -B:48

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1DQ7)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1DQ7)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1DQ7)

(-) Exons   (0, 0)

(no "Exon" information available for 1DQ7)

(-) 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:64
 aligned with SCX1_MESTA | P60277 from UniProtKB/Swiss-Prot  Length:64

    Alignment length:64
                                    10        20        30        40        50        60    
            SCX1_MESTA    1 GEDGYIADGDNCTYICTFNNYCHALCTDKKGDSGACDWWVPYGVVCWCEDLPTPVPIRGSGKCR 64
               SCOP domains d1dq7a_ A: Scorpion toxin                                        SCOP domains
               CATH domains 1dq7A00 A:1-64  [code=3.30.30.10, no name defined]               CATH domains
               Pfam domains ---------------------------------------------------------------- Pfam domains
         Sec.struct. author .eee.............hhhhhhhhhhhh...eeeeeeee..eeeeeeeee............. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------- Transcript
                  1dq7 A  1 GEDGYIADGDNCTYICTFNNYCHALCTDKKGDSGACDWWVPYGVVCWCEDLPTPVPIRGSGKCR 64
                                    10        20        30        40        50        60    


Chain B from PDB  Type:PROTEIN  Length:64
 aligned with SCX1_MESTA | P60277 from UniProtKB/Swiss-Prot  Length:64

    Alignment length:64
                                    10        20        30        40        50        60    
            SCX1_MESTA    1 GEDGYIADGDNCTYICTFNNYCHALCTDKKGDSGACDWWVPYGVVCWCEDLPTPVPIRGSGKCR 64
               SCOP domains d1dq7b_ B: Scorpion toxin                                        SCOP domains
               CATH domains 1dq7B00 B:1-64  [code=3.30.30.10, no name defined]               CATH domains
               Pfam domains ---------------------------------------------------------------- Pfam domains
         Sec.struct. author .eee.............hhhhhhhhhhh....eeeeeeee..eeeeeeeee............. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------- Transcript
                  1dq7 B  1 GEDGYIADGDNCTYICTFNNYCHALCTDKKGDSGACDWWVPYGVVCWCEDLPTPVPIRGSGKCR 64
                                    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  (0, 0)

(no "Pfam Domain" information available for 1DQ7)

(-) Gene Ontology  (3, 3)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (SCX1_MESTA | P60277)
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

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        SCX1_MESTA | P60277: 2a7t

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