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(-) Description

Title :  SOLUTION STRUCTURE OF PTU-1, A TOXIN FROM THE ASSASSIN BUGS PEIRATES TURPIS THAT BLOCKS THE VOLTAGE SENSITIVE CALCIUM CHANNEL N-TYPE
 
Authors :  C. Bernard, G. Corzo, A. Mosbah, T. Nakajima, H. Darbon
Date :  06 Feb 01  (Deposition) - 21 Nov 01  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (26x)
Keywords :  Ca Channel, Assassin Bug, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  C. Bernard, G. Corzo, A. Mosbah, T. Nakajima, H. Darbon
Solution Structure Of Ptu1, A Toxin From The Assassin Bug Peirates Turpis That Blocks The Voltage-Sensitive Calcium Channel N-Type.
Biochemistry V. 40 12795 2001
PubMed-ID: 11669615  |  Reference-DOI: 10.1021/BI015537J
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - PTU-1
    Chains: A
    Organism Scientific: PEIRATES TURPIS
    Organism Taxid: 181095

 Structural Features

(-) Chains, Units

  
NMR Structure (26x): 

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 1I26)

(-) Sites  (0, 0)

(no "Site" information available for 1I26)

(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:5 -A:20
2A:12 -A:26
3A:19 -A:33

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1I26)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1I26)

(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ASSASSIN_BUG_TOXINPS60010 Assassin bug toxin signature.PTU1_PEITU5-33  1A:5-33

(-) Exons   (0, 0)

(no "Exon" information available for 1I26)

(-) 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:34
 aligned with PTU1_PEITU | P58606 from UniProtKB/Swiss-Prot  Length:34

    Alignment length:34
                                    10        20        30    
            PTU1_PEITU    1 AEKDCIAPGAPCFGTDKPCCNPRAWCSSYANKCL 34
               SCOP domains d1i26a_ A: PTU-1                   SCOP domains
               CATH domains ---------------------------------- CATH domains
               Pfam domains ---------------------------------- Pfam domains
         Sec.struct. author .........................ee....ee. Sec.struct. author
                 SAPs(SNPs) ---------------------------------- SAPs(SNPs)
                    PROSITE ----ASSASSIN_BUG_TOXIN           - PROSITE
                 Transcript ---------------------------------- Transcript
                  1i26 A  1 AEKDCIAPGAPCFGTDKPCCNPRAWCSSYANKCL 34
                                    10        20        30
   Legend:   → Mismatch (orange background)
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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  (0, 0)

(no "CATH Domain" information available for 1I26)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1I26)

(-) Gene Ontology  (3, 3)

NMR Structure(hide GO term definitions)
Chain A   (PTU1_PEITU | P58606)
molecular function
    GO:0019855    calcium channel inhibitor activity    Stops, prevents, or reduces the activity of a calcium channel.
biological process
    GO:0009405    pathogenesis    The set of specific processes that generate the ability of an organism to induce an abnormal, generally detrimental state in another organism.
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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  1i26
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