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(-) Description

Title :  NMR SOLUTION STRUCTURE OF PIIIA TOXIN, NMR, 20 STRUCTURES
 
Authors :  K. J. Nielsen, M. Watson, D. J. Adams, A. K. Hammarstrom, P. W. Gage, J. M. Hill, D. J. Craik, L. Thomas, D. Adams, P. F. Alewood, R. J. Lewis
Date :  30 Oct 03  (Deposition) - 18 Nov 03  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Conotoxin, Cysteine Knot (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  K. J. Nielsen, M. Watson, D. J. Adams, A. K. Hammarstrom, P. W. Gage, J. M. Hill, D. J. Craik, L. Thomas, D. Adams, P. F. Alewood, R. J. Lewis
Solution Structure Of Mu-Conotoxin Piiia, A Preferential Inhibitor Of Persistent Tetrodotoxin-Sensitive Sodium Channels
J. Biol. Chem. V. 277 27247 2002
PubMed-ID: 12006587  |  Reference-DOI: 10.1074/JBC.M201611200
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - MU-CONOTOXIN PIIIA
    Chains: A
    Organism Scientific: CONUS PURPURASCENS
    Organism Taxid: 41690

 Structural Features

(-) Chains, Units

  
NMR Structure (20x): 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 4)

NMR Structure (3, 4)
No.NameCountTypeFull Name
1CY31Mod. Amino Acid2-AMINO-3-MERCAPTO-PROPIONAMIDE
2HYP2Mod. Amino Acid4-HYDROXYPROLINE
3PCA1Mod. Amino AcidPYROGLUTAMIC ACID

(-) Sites  (0, 0)

(no "Site" information available for 1R9I)

(-) SS Bonds  (2, 2)

NMR Structure
No.Residues
1A:4 -A:16
2A:5 -A:21

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1R9I)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1R9I)

(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1MU_CONOTOXINPS60013 Mu-conotoxin family signature.CM3A_CONPU53-71  1A:4-22

(-) Exons   (0, 0)

(no "Exon" information available for 1R9I)

(-) 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:22
 aligned with CM3A_CONPU | P58925 from UniProtKB/Swiss-Prot  Length:73

    Alignment length:22
                                    59        69  
            CM3A_CONPU   50 QRLCCGFPKSCRSRQCKPHRCC 71
               SCOP domains d1r9ia_ A:             SCOP domains
               CATH domains ---------------------- CATH domains
               Pfam domains -Mu-conotoxin-1r9iA01  Pfam domains
         Sec.struct. author ........hhhhh......... Sec.struct. author
                 SAPs(SNPs) ---------------------- SAPs(SNPs)
                    PROSITE ---MU_CONOTOXIN        PROSITE
                 Transcript ---------------------- Transcript
                  1r9i A  1 xRLCCGFpKSCRSRQCKpHRCc 22
                            |      |10       |20 |
                            |      8-HYP    18-HYP
                            1-PCA               22-CY3
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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: Peptides (792)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 1R9I)

(-) Pfam Domains  (1, 1)

NMR Structure
(-)
Clan: Omega_toxin (34)

(-) Gene Ontology  (4, 4)

NMR Structure(hide GO term definitions)
Chain A   (CM3A_CONPU | P58925)
molecular function
    GO:0008200    ion channel inhibitor activity    Stops, prevents, or reduces the activity of an ion channel.
    GO:0019871    sodium channel inhibitor activity    Stops, prevents, or reduces the activity of a sodium 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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