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(-) Description

Title :  SOLUTION STRUCTURE OF OMEGA-GRAMMOTOXIN SIA
 
Authors :  K. Takeuchi, E. J. Park, C. W. Lee, J. I. Kim, H. Takahashi, K. J. Swartz, I. Shimada
Date :  25 Dec 01  (Deposition) - 28 Aug 02  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Toxin, Cystine Knot (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  K. Takeuchi, E. Park, C. Lee, J. Kim, H. Takahashi, K. Swartz, I. Shimada
Solution Structure Of Omega-Grammotoxin Sia, A Gating Modifier Of P/Q And N-Type Ca(2+) Channel.
J. Mol. Biol. V. 321 517 2002
PubMed-ID: 12162963  |  Reference-DOI: 10.1016/S0022-2836(02)00595-8
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - VOLTAGE-DEPENDENT CHANNEL INHIBITOR
    Chains: A
    Engineered: YES
    Other Details: CHEMICALLY SYNTHESIZED BY A SOLID-PHASE METHODOLOGY
    Synonym: OMEGA-GRAMMOTOXIN SIA
    Synthetic: YES

 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 1KOZ)

(-) Sites  (0, 0)

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(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:2 -A:16
2A:9 -A:21
3A:15 -A:30

(-) Cis Peptide Bonds  (0, 0)

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 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (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    
   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:36
 aligned with WGRTX_GRARO | P60590 from UniProtKB/Swiss-Prot  Length:87

    Alignment length:36
                                    59        69        79      
           WGRTX_GRARO   50 DCVRFWGKCSQTSDCCPHLACKSKWPRNICVWDGSV 85
               SCOP domains d1koza_ A: Grammotoxin SIA, GrTx     SCOP domains
               CATH domains ------------------------------------ CATH domains
               Pfam domains ------------------------------------ Pfam domains
         Sec.struct. author ..................ee..........ee.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------ PROSITE
                 Transcript ------------------------------------ Transcript
                  1koz A  1 DCVRFWGKCSQTSDCCPHLACKSKWPRNICVWDGSV 36
                                    10        20        30
   Legend:   → Mismatch (orange background)
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 Classification and Annotation

(-) SCOP Domains  (1, 1)

NMR Structure
(-)
Class: Small proteins (3458)

(-) CATH Domains  (0, 0)

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

(-) Pfam Domains  (0, 0)

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(-) Gene Ontology  (5, 5)

NMR Structure(hide GO term definitions)
Chain A   (WGRTX_GRARO | P60590)
molecular function
    GO:0019855    calcium channel inhibitor activity    Stops, prevents, or reduces the activity of a calcium channel.
    GO:0008200    ion channel inhibitor activity    Stops, prevents, or reduces the activity of an ion channel.
    GO:0019870    potassium channel inhibitor activity    Stops, prevents, or reduces the activity of a potassium channel.
biological process
    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.

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