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(-) Description

Title :  SEQUENTIAL ASSIGNMENT AND STRUCTURE DETERMINATION OF SPIDER TOXIN OMEGA-AGA-IVB
 
Authors :  H. Yu, M. K. Rosen, S. L. Schreiber
Date :  09 Sep 93  (Deposition) - 31 Oct 93  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A
Keywords :  Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  H. Yu, M. K. Rosen, N. A. Saccomano, D. Phillips, R. A. Volkmann, S. L. Schreiber
Sequential Assignment And Structure Determination Of Spider Toxin Omega-Aga-Ivb.
Biochemistry V. 32 13123 1993
PubMed-ID: 8241166  |  Reference-DOI: 10.1021/BI00211A022
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - OMEGA-AGA-IVB
    Chains: A
    Engineered: YES
    Organism Scientific: AGELENOPSIS APERTA
    Organism Taxid: 6908

 Structural Features

(-) Chains, Units

  
NMR Structure : 

Summary Information (see also Sequences/Alignments below)

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

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

(-) Sites  (0, 0)

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(-) SS Bonds  (4, 4)

NMR Structure
No.Residues
1A:4 -A:20
2A:12 -A:25
3A:19 -A:36
4A:27 -A:34

(-) Cis Peptide Bonds  (0, 0)

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 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 1OMB)

(-) 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:35
 aligned with TOG4B_AGEAP | P37045 from UniProtKB/Swiss-Prot  Length:83

    Alignment length:35
                                    48        58        68     
           TOG4B_AGEAP   39 CIAEDYGKCTWGGTKCCRGRPCRCSMIGTNCECTP 73
               SCOP domains d1omba_ A:                          SCOP domains
               CATH domains 1ombA00 A:4-38                      CATH domains
               Pfam domains Toxin_9-1ombA01 A:4-38              Pfam domains
         Sec.struct. author ......eee.............ee......eee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------- PROSITE
                 Transcript ----------------------------------- Transcript
                  1omb A  4 CIAEDYGKCTWGGTKCCRGRPCRCSMIGTNCECTP 38
                                    13        23        33
   Legend:   → Mismatch (orange background)
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    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  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: Small proteins (3458)

(-) CATH Domains  (1, 1)

NMR Structure
(-)
Class: Few Secondary Structures (1120)

(-) Pfam Domains  (1, 1)

NMR Structure
(-)
Clan: Omega_toxin (34)

(-) Gene Ontology  (4, 4)

NMR Structure(hide GO term definitions)
Chain A   (TOG4B_AGEAP | P37045)
molecular function
    GO:0008200    ion channel inhibitor activity    Stops, prevents, or reduces the activity of an ion 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.
    GO:0072556    other organism presynaptic membrane    A presynaptic membrane that is part of another organism, i.e. a secondary organism with which the first organism is interacting. A presynaptic membrane is specialized area of membrane of the axon terminal that faces the plasma membrane of the neuron or muscle fiber with which the axon terminal establishes a synaptic junction; many synaptic junctions exhibit structural presynaptic characteristics, such as conical, electron-dense internal protrusions, that distinguish it from the remainder of the axon plasma membrane.

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 Related Entries

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

UniProtKB/Swiss-Prot
        TOG4B_AGEAP | P37045: 1agg 1oma

(-) Related Entries Specified in the PDB File

1oma