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(-) Description

Title :  SOLUTION STRUCTURE OF PSMALMOTOXIN 1, THE FIRST CHARACTERIZED SPECIFIC BLOCKER OF ASIC1A NA+ CHANNEL
 
Authors :  P. Escoubas, C. Bernard, M. Lazdunski, H. Darbon
Date :  02 May 02  (Deposition) - 25 Nov 03  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Ick, Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  P. Escoubas, C. Bernard, G. Lambeau, M. Lazdunski, H. Darbon
Recombinant Production And Solution Structure Of Pctx1, The Specific Peptide Inhibitor Of Asic1A Proton-Gated Cation Channels
Protein Sci. V. 12 1332 2003
PubMed-ID: 12824480  |  Reference-DOI: 10.1110/PS.0307003
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - PSALMOTOXIN 1
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Organism Common: TRINIDAD CHEVRON TARANTULA
    Organism Scientific: PSALMOPOEUS CAMBRIDGEI
    Organism Taxid: 179874
    Synonym: PCTX1

 Structural Features

(-) Chains, Units

  
NMR Structure (20x): 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1LMM)

(-) Sites  (0, 0)

(no "Site" information available for 1LMM)

(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:3 -A:18
2A:10 -A:23
3A:17 -A:33

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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(-) Exons   (0, 0)

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(-) 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    
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SAPs(SNPs) PROSITE motifs Exons
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Chain A from PDB  Type:PROTEIN  Length:40
 aligned with TXP1_PSACA | P60514 from UniProtKB/Swiss-Prot  Length:40

    Alignment length:40
                                    10        20        30        40
            TXP1_PSACA    1 EDCIPKWKGCVNRHGDCCEGLECWKRRRSFEVCVPKTPKT 40
               SCOP domains d1lmma_ A: Psalmotoxin 1                 SCOP domains
               CATH domains ---------------------------------------- CATH domains
               Pfam domains ---------------------------------------- Pfam domains
         Sec.struct. author .....................eeee.....eeee...... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------- PROSITE
                 Transcript ---------------------------------------- Transcript
                  1lmm A  1 EDCIPKWKGCVNRHGDCCEGLECWKRRRSFEVCVPKTPKT 40
                                    10        20        30        40
   Legend:   → Mismatch (orange background)
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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: Small proteins (3458)

(-) CATH Domains  (0, 0)

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

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (1, 1)

NMR Structure(hide GO term definitions)
Chain A   (TXP1_PSACA | P60514)
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.

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 Related Entries

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

UniProtKB/Swiss-Prot
        TXP1_PSACA | P60514: 2kni 3s3x 4fz0 4fz1

(-) Related Entries Specified in the PDB File

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