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(-) Description

Title :  SOLUTION CONFORMATION OF ALPHAA-CONOTOXIN EIVA
 
Authors :  S. -W. Chi, K. -H. Park, J. -E. Suk, B. M. Olivera, J. M. Mcintosh, K. - H. Han
Date :  18 Jun 03  (Deposition) - 04 Nov 03  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (18x)
Keywords :  Alpha-Helix, Two Disulfide Bonds, C-Term Amidation, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. -W. Chi, K. -H. Park, J. -E. Suk, B. M. Olivera, J. M. Mcintosh, K. -H. Han
Solution Conformation Of Alphaa-Conotoxin Eiva, A Potent Neuromuscular Nicotinic Acetylcholine Receptor Antagonist From Conus Ermineus
J. Biol. Chem. V. 278 42208 2003
PubMed-ID: 12900418  |  Reference-DOI: 10.1074/JBC.M303342200
(for further references see the PDB file header)

(-) Compounds

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

 Structural Features

(-) Chains, Units

  
NMR Structure (18x): 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 6)

NMR Structure (2, 6)
No.NameCountTypeFull Name
1HYP5Mod. Amino Acid4-HYDROXYPROLINE
2NH21Mod. Amino AcidAMINO GROUP

(-) Sites  (1, 1)

NMR Structure (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLY A:30BINDING SITE FOR RESIDUE NH2 A 31

(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:2 -A:16
2A:3 -A:11
3A:14 -A:24

(-) Cis Peptide Bonds  (1, 1)

NMR Structure
No.Residues
1Gly A:1 -Cys A:2

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1PQR)

(-) Exons   (0, 0)

(no "Exon" information available for 1PQR)

(-) 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:31
 aligned with CA4A_CONER | P58782 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:31
                                                        30 
                                    10        20        30 
            CA4A_CONER    1 GCCGPYPNAACHPCGCKVGRPPYCDRPSGG-  -
               SCOP domains d1pqra_ A:                      SCOP domains
               CATH domains ------------------------------- CATH domains
               Pfam domains Toxin_14-1pqrA01 A:1-26   ----- Pfam domains
         Sec.struct. author ....................hhhhhh..... Sec.struct. author
                 SAPs(SNPs) ------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------- PROSITE
                 Transcript ------------------------------- Transcript
                  1pqr A  1 GCCGPYpNAACHpCGCKVGRppYCDRpSGGx 31
                                  | 10  |     20||    | 30|
                                  7-HYP |      21-HYP |   |
                                       13-HYP   22-HYP|   |
                                                     27-HYP
                                                         31-NH2
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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 1PQR)

(-) Pfam Domains  (1, 1)

NMR Structure
(-)
Clan: no clan defined [family: Toxin_14] (2)

(-) Gene Ontology  (5, 5)

NMR Structure(hide GO term definitions)
Chain A   (CA4A_CONER | P58782)
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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