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(-) Description

Title :  STRUCTURE OF THE CALCIUM CHANNEL BLOCKER OMEGA CONOTOXIN GVIA, NMR, 20 STRUCTURES
 
Authors :  P. K. Pallaghy, R. S. Norton
Date :  13 Feb 98  (Deposition) - 15 Jul 98  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Conotoxin, Cystine Knot, Inhibitor Cystine Knot Motif, Calcium Channel Blocker, Cone-Shell, Nmr, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  P. K. Pallaghy, R. S. Norton
Refined Solution Structure Of Omega-Conotoxin Gvia: Implications For Calcium Channel Binding
J. Pept. Res. V. 53 343 1999
PubMed-ID: 10231724  |  Reference-DOI: 10.1034/J.1399-3011.1999.00040.X
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - OMEGA-CONOTOXIN GVIA
    Chains: A
    Engineered: YES
    Organ: VENOM GLAND
    Organism Common: GEOGRAPHY CONE
    Organism Scientific: CONUS GEOGRAPHUS
    Organism Taxid: 6491

 Structural Features

(-) Chains, Units

  
NMR Structure (20x): 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 4)

NMR Structure (2, 4)
No.NameCountTypeFull Name
1HYP3Mod. Amino Acid4-HYDROXYPROLINE
2NH21Mod. Amino AcidAMINO GROUP

(-) Sites  (1, 1)

NMR Structure (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREHYP A:4 , CYS A:26 , TYR A:27BINDING SITE FOR RESIDUE NH2 A 28

(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:1 -A:16
2A:8 -A:19
3A:15 -A:26

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2CCO)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2CCO)

(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1OMEGA_CONOTOXINPS60004 Omega-conotoxin family signature.CO16A_CONGE46-71  1A:1-26

(-) Exons   (0, 0)

(no "Exon" information available for 2CCO)

(-) 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:28
 aligned with CO16A_CONGE | P01522 from UniProtKB/Swiss-Prot  Length:73

    Alignment length:28
                                    55        65        
           CO16A_CONGE   46 CKSPGSSCSPTSYNCCRSCNPYTKRCYG 73
               SCOP domains d2ccoa_ A: Conotoxin         SCOP domains
               CATH domains ---------------------------- CATH domains
               Pfam domains ---------------------------- Pfam domains
         Sec.struct. author .....eee.........eee...eeee. Sec.struct. author
                 SAPs(SNPs) ---------------------------- SAPs(SNPs)
                    PROSITE OMEGA_CONOTOXIN           -- PROSITE
                 Transcript ---------------------------- Transcript
                  2cco A  1 CKSpGSSCSpTSYNCCRSCNpYTKRCYx 28
                               |    10        20|      |
                               |     |         21-HYP 28-NH2
                               4-HYP |                  
                                    10-HYP
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 Classification and Annotation

(-) SCOP Domains  (1, 1)

NMR Structure
(-)
Class: Small proteins (3458)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2CCO)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2CCO)

(-) Gene Ontology  (4, 4)

NMR Structure(hide GO term definitions)
Chain A   (CO16A_CONGE | P01522)
molecular function
    GO:0008200    ion channel inhibitor activity    Stops, prevents, or reduces the activity of an ion 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.
    GO:0072556    other organism presynaptic membrane    A presynaptic membrane that is part of another organism, i.e. a secondary organism with which the first organism is interacting. A presynaptic membrane is specialized area of membrane of the axon terminal that faces the plasma membrane of the neuron or muscle fiber with which the axon terminal establishes a synaptic junction; many synaptic junctions exhibit structural presynaptic characteristics, such as conical, electron-dense internal protrusions, that distinguish it from the remainder of the axon plasma membrane.

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 Related Entries

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UniProtKB/Swiss-Prot
        CO16A_CONGE | P01522: 1omc 1tr6 1ttl

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