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(-) Description

Title :  MINIMAL CONFORMATION OF THE ALPHA-CONOTOXIN IMI FOR THE ALPHA7 NEURONAL NICOTINIC ACETYLCHOLINE RECEPTOR RECOGNITION
 
Authors :  H. Lamthanh, C. Jegou-Matheron, D. Servent, A. Menez, J. M. Lancelin
Date :  19 Oct 00  (Deposition) - 08 Nov 00  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (30x)
Keywords :  Alpha-Helix, 3-10 Helix, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  H. Lamthanh, C. Jegou-Matheron, D. Servent, A. Menez, J. M. Lancelin
Minimal Conformation Of The Alpha-Conotoxin Imi For The Alpha7 Neuronal Nicotinic Acetylcholine Receptor Recognition: Correlated Cd, Nmr And Binding Studies.
Febs Lett. V. 454 293 1999
PubMed-ID: 10431825  |  Reference-DOI: 10.1016/S0014-5793(99)00831-5
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ALPHA-CONOTOXIN IMI
    Chains: A
    Engineered: YES
    Other Details: THE SOLID PHASE SYNTHESIS OF ALPHA- CONOTOXIN IMI WAS CARRIED OUT USING THE F-MOC CHEMISTRY. THE SEQUENCE OF THE PROTEIN IS NATURALLY FOUND IN THE VENOM OF CONUS IMPERIALIS (IMPERIAL CONE).
    Synthetic: YES

 Structural Features

(-) Chains, Units

  
NMR Structure (30x): 

Summary Information (see also Sequences/Alignments below)

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

NMR Structure (1, 1)
No.NameCountTypeFull Name
1NH21Mod. Amino AcidAMINO GROUP

(-) Sites  (1, 1)

NMR Structure (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREALA A:9 , CYS A:12BINDING SITE FOR RESIDUE NH2 A 13

(-) SS Bonds  (2, 2)

NMR Structure
No.Residues
1A:2 -A:8
2A:3 -A:12

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1G2G)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1G2G)

(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ALPHA_CONOTOXINPS60014 Alpha-conotoxin family signature.CA1_CONIM6-16  1A:2-12

(-) Exons   (0, 0)

(no "Exon" information available for 1G2G)

(-) 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
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Chain A from PDB  Type:PROTEIN  Length:13
 aligned with CA1_CONIM | P50983 from UniProtKB/Swiss-Prot  Length:17

    Alignment length:13
                                    14   
             CA1_CONIM    5 GCCSDPRCAWRCG 17
               SCOP domains d1g2ga_ A:    SCOP domains
               CATH domains ------------- CATH domains
               Pfam domains ------------- Pfam domains
         Sec.struct. author ....hhhhhh... Sec.struct. author
                 SAPs(SNPs) ------------- SAPs(SNPs)
                    PROSITE -ALPHA_CONOT- PROSITE
                 Transcript ------------- Transcript
                  1g2g A  1 GCCSDPRCAWRCx 13
                                    10  |
                                       13-NH2
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  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  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 1G2G)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1G2G)

(-) Gene Ontology  (2, 2)

NMR Structure(hide GO term definitions)
Chain A   (CA1_CONIM | P50983)
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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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        CA1_CONIM | P50983: 1cnl 1e74 1e75 1e76 1im1 1imi 2bc7 2bc8 2byp 2c9t 2igu 2moa

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 1G2G)