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(-) Description

Title :  TITYUS SERRULATUS NEUROTOXIN (TS1) AT ATOMIC RESOLUTION
 
Authors :  C. B. Pinheiro, S. Marangoni, M. H. Toyama, I. Polikarpov
Date :  17 Jan 03  (Deposition) - 25 Feb 03  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.16
Chains :  Asym./Biol. Unit :  A
Keywords :  Xcitatory Neurotoxin, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  C. B. Pinheiro, S. Marangoni, M. H. Toyama, I. Polikarpov
Structural Analysis Of Tityus Serrulatus Ts1 Neurotoxin At Atomic Resolution: Insights Into Interactions With Na+ Channels.
Acta Crystallogr. , Sect. D V. 59 405 2003
PubMed-ID: 12595696  |  Reference-DOI: 10.1107/S090744490202111X
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - TOXIN VII
    Chains: A
    Organism Common: BRAZILIAN SCORPION
    Organism Scientific: TITYUS SERRULATUS
    Organism Taxid: 6887
    Synonym: TSTX-VII

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

Asymmetric/Biological Unit (1, 2)
No.NameCountTypeFull Name
1PO42Ligand/IonPHOSPHATE ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWARELYS A:1 , ASN A:49 , HOH A:204 , HOH A:206 , HOH A:236 , HOH A:265 , HOH A:272 , HOH A:291BINDING SITE FOR RESIDUE PO4 A 201
2AC2SOFTWARELYS A:12 , ARG A:18 , TRP A:54 , ARG A:56 , HOH A:257 , HOH A:282 , HOH A:296BINDING SITE FOR RESIDUE PO4 A 202

(-) SS Bonds  (4, 4)

Asymmetric/Biological Unit
No.Residues
1A:11 -A:61
2A:15 -A:37
3A:23 -A:42
4A:27 -A:44

(-) Cis Peptide Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1Trp A:39 -Pro A:40

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (0, 0)

(no "Exon" information available for 1NPI)

(-) Sequences/Alignments

Asymmetric/Biological 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:61
 aligned with SCX1_TITSE | P15226 from UniProtKB/Swiss-Prot  Length:84

    Alignment length:61
                                    30        40        50        60        70        80 
            SCX1_TITSE   21 KEGYLMDHEGCKLSCFIRPSGYCGRECGIKKGSSGYCAWPACYCYGLPNWVKVWDRATNKC 81
               SCOP domains d1npia_ A: Scorpion toxin                                     SCOP domains
               CATH domains 1npiA00 A:1-61  [code=3.30.30.10, no name defined]            CATH domains
               Pfam domains ------------------------------------------------------------- Pfam domains
         Sec.struct. author ..ee................hhhhhhhhhh...eeeee..eeeee................ Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------- Transcript
                  1npi A  1 KEGYLMDHEGCKLSCFIRPSGYCGRECGIKKGSSGYCAWPACYCYGLPNWVKVWDRATNKC 61
                                    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)

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

(-) CATH Domains  (1, 1)

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

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (3, 3)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (SCX1_TITSE | P15226)
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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UniProtKB/Swiss-Prot
        SCX1_TITSE | P15226: 1b7d

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