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(-) Description

Title :  THREE-DIMENSIONAL SOLUTION STRUCTURE OF ALPHA-CONOTOXIN GID BY NMR SPECTROSCOPY
 
Authors :  A. Nicke, M. L. Loughnan, E. L. Millard, P. F. Alewood, D. J. Adams, N. L. Daly, D. J. Craik, R. J. Lewis
Date :  22 Sep 02  (Deposition) - 11 Feb 03  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Alpha-Helix, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. Nicke, M. L. Loughnan, E. L. Millard, P. F. Alewood, D. J. Adams, N. L. Daly, D. J. Craik, R. J. Lewis
Isolation, Structure, And Activity Of Gid, A Novel Alpha 4/7-Conotoxin With An Extended N-Terminal Sequence
J. Biol. Chem. V. 278 3137 2003
PubMed-ID: 12419800  |  Reference-DOI: 10.1074/JBC.M210280200
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ALPHA-CONOTOXIN GID
    Chains: A
    Engineered: YES
    Other Details: THIS SEQUENCE OCCURS IN NATURALLY IN CONUS GEOGRAPHUS VENOM.
    Synthetic: YES

 Structural Features

(-) Chains, Units

  
NMR Structure (20x): 

Summary Information (see also Sequences/Alignments below)

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

NMR Structure (2, 2)
No.NameCountTypeFull Name
1CGU1Mod. Amino AcidGAMMA-CARBOXY-GLUTAMIC ACID
2HYP1Mod. Amino Acid4-HYDROXYPROLINE

(-) Sites  (0, 0)

(no "Site" information available for 1MTQ)

(-) SS Bonds  (2, 2)

NMR Structure
No.Residues
1A:5 -A:11
2A:6 -A:19

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ALPHA_CONOTOXINPS60014 Alpha-conotoxin family signature.CA1D_CONGE49-63  1A:5-19

(-) Exons   (0, 0)

(no "Exon" information available for 1MTQ)

(-) 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:19
 aligned with CA1D_CONGE | P60274 from UniProtKB/Swiss-Prot  Length:66

    Alignment length:19
                                    54         
            CA1D_CONGE   45 IRDECCSNPACRVNNPHVC 63
               SCOP domains d1mtqa_ A:          SCOP domains
               CATH domains ------------------- CATH domains
               Pfam domains ------------------- Pfam domains
         Sec.struct. author .......hhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------- SAPs(SNPs)
                    PROSITE ----ALPHA_CONOTOXIN PROSITE
                 Transcript ------------------- Transcript
                  1mtq A  1 IRDeCCSNPACRVNNpHVC 19
                               |    10     |   
                               |          16-HYP
                               4-CGU
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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 1MTQ)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (5, 5)

NMR Structure(hide GO term definitions)
Chain A   (CA1D_CONGE | P60274)
molecular function
    GO:0030550    acetylcholine receptor inhibitor activity    Interacting (directly or indirectly) with acetylcholine receptors such that the proportion of receptors in the active form is decreased.
biological process
    GO:2000272    negative regulation of receptor activity    Any process that stops, prevents or reduces the frequency, rate or extent of receptor activity.
    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:0035792    other organism postsynaptic membrane    A postsynaptic membrane that is part of another organism, i.e. a secondary organism with which the first organism is interacting. A postsynaptic membrane is a specialized area of membrane facing the presynaptic membrane on the tip of the nerve ending and separated from it by a minute cleft (the synaptic cleft). Neurotransmitters transmit the signal across the synaptic cleft to the postsynaptic membrane.

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