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(-) Description

Title :  [PRO7,13] AA-CONOTOXIN PIVA, NMR, 12 STRUCTURES
 
Authors :  K. -H. Han, K. -J. Hwang, S. -M. Kim, S. -K. Kim, W. R. Gray, B. M. Olivera, J. Rivier, K. J. Shon
Date :  06 Dec 96  (Deposition) - 07 Jul 97  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (12x)
Keywords :  Neurotoxin, Conotoxin, Acetylcholine Receptor Binding, Transcription Regulation (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  K. H. Han, K. J. Hwang, S. M. Kim, S. K. Kim, W. R. Gray, B. M. Olivera, J. Rivier, K. J. Shon
Nmr Structure Determination Of A Novel Conotoxin, [Pro 7, 13] Alpha A-Conotoxin Piva.
Biochemistry V. 36 1669 1997
PubMed-ID: 9048550  |  Reference-DOI: 10.1021/BI962301K
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - AA-CONOTOXIN PIVA
    ChainsA
    EngineeredYES
    MutationYES
    Organism ScientificCONUS PURPURASCENS
    Organism Taxid41690

 Structural Features

(-) Chains, Units

  
NMR Structure (12x)

Summary Information (see also Sequences/Alignments below)

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

NMR Structure (2, 2)
No.NameCountTypeFull Name
1HYP1Mod. Amino Acid4-HYDROXYPROLINE
2NH21Mod. Amino AcidAMINO GROUP

(-) Sites  (1, 1)

NMR Structure (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWARESER A:21 , GLN A:25BINDING SITE FOR RESIDUE NH2 A 26

(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:2 -A:16
2A:3 -A:11
3A:14 -A:23

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1P1P)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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(-) PROSITE Motifs  (0, 0)

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(-) Exons   (0, 0)

(no "Exon" information available for 1P1P)

(-) 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:26
 aligned with CA4A_CONPU | P55963 from UniProtKB/Swiss-Prot  Length:25

    Alignment length:26
                                                   25 
                                    10        20    | 
            CA4A_CONPU    1 GCCGSYPNAACHPCSCKDRPSYCGQ-  -
               SCOP domains d1p1pa_ A:                 SCOP domains
               CATH domains -------------------------- CATH domains
               Pfam domains Toxin_14-1p1pA01 A:1-25  - Pfam domains
         Sec.struct. author ....................hhhh.. Sec.struct. author
                 SAPs(SNPs) -------------------------- SAPs(SNPs)
                    PROSITE -------------------------- PROSITE
                 Transcript -------------------------- Transcript
                  1p1p A  1 GCCGSYPNAACHPCSCKDRpSYCGQx 26
                                    10        20     |
                                              20-HYP |
                                                    26-NH2

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 Classification and Annotation

(-) SCOP Domains  (1, 1)

NMR Structure
(-)
Class: Peptides (792)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 1P1P)

(-) Pfam Domains  (1, 1)

NMR Structure

(-) Gene Ontology  (5, 5)

NMR Structure(hide GO term definitions)
Chain A   (CA4A_CONPU | P55963)
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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