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(-) Description

Title :  THREE DIMENSIONAL SOLUTION STRUCTURE OF THE K27A MUTANT OF SODIUM CHANNELS INHIBITOR HAINANTOXIN-IV BY 2D 1H-NMR
 
Authors :  D. Li, S. Lu, X. Gu, S. Liang
Date :  22 Dec 03  (Deposition) - 13 Jan 04  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Neurotoxin, Inhibitor Cystine Knot Motif (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  D. Li, Y. Xiao, X. Xu, X. Xiong, S. Lu, Z. Liu, Q. Zhu, M. Wang, X. Gu, S. Liang
Structure--Activity Relationships Of Hainantoxin-Iv And Structure Determination Of Active And Inactive Sodium Channel Blockers
J. Biol. Chem. V. 279 37734 2004
PubMed-ID: 15201273  |  Reference-DOI: 10.1074/JBC.M405765200
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - HAINANTOXIN-IV
    Chains: A
    Engineered: YES
    Mutation: YES
    Other Details: SYNTHESIZED USING STANDARD FMOC CHEMISTRY.
    Synonym: HNTX-IV
    Synthetic: YES

 Structural Features

(-) Chains, Units

  
NMR Structure (20x): 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 1)

NMR Structure (1, 1)
No.NameCountTypeFull Name
1NH21Mod. Amino AcidAMINO GROUP

(-) Sites  (1, 1)

NMR Structure (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLU A:34 , ILE A:35BINDING SITE FOR RESIDUE NH2 A 36

(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:2 -A:17
2A:9 -A:24
3A:16 -A:31

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1HWTX_1PS60021 Huwentoxin-1 family signature.H4A01_HAPHA51-80  1A:2-31
H4A02_HAPHA51-80  1A:2-31
H4A03_HAPHA51-80  1A:2-31

(-) Exons   (0, 0)

(no "Exon" information available for 1RYV)

(-) 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 H4A01_HAPHA | D2Y232 from UniProtKB/Swiss-Prot  Length:86

    Alignment length:36
                                    59        69        79      
           H4A01_HAPHA   50 ECLGFGKGCNPSNDQCCKSSNLVCSRKHRWCKYEIG 85
               SCOP domains d1ryva_ A: Hainantoxin-IV            SCOP domains
               CATH domains ------------------------------------ CATH domains
               Pfam domains ------------------------------------ Pfam domains
         Sec.struct. author ......................ee......ee.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------ SAPs(SNPs)
                PROSITE (2) ------------------------------------ PROSITE (2)
                PROSITE (3) -HWTX_1  PDB: A:2-31           ----- PROSITE (3)
                 Transcript ------------------------------------ Transcript
                  1ryv A  1 ECLGFGKGCNPSNDQCCKSSNLVCSRAHRWCKYEIx 36
                                    10        20        30     |
                                                              36-NH2


Chain A from PDB  Type:PROTEIN  Length:36
 aligned with H4A02_HAPHA | D2Y233 from UniProtKB/Swiss-Prot  Length:86

    Alignment length:36
                                    59        69        79      
           H4A02_HAPHA   50 ECLGFGKGCNPSNDQCCKSSNLVCSRKHRWCKYEIG 85
               SCOP domains d1ryva_ A: Hainantoxin-IV            SCOP domains
               CATH domains ------------------------------------ CATH domains
               Pfam domains ------------------------------------ Pfam domains
         Sec.struct. author ......................ee......ee.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------ SAPs(SNPs)
                    PROSITE -HWTX_1  PDB: A:2-31           ----- PROSITE
                 Transcript ------------------------------------ Transcript
                  1ryv A  1 ECLGFGKGCNPSNDQCCKSSNLVCSRAHRWCKYEIx 36
                                    10        20        30     |
                                                              36-NH2


Chain A from PDB  Type:PROTEIN  Length:36
 aligned with H4A03_HAPHA | D2Y2D7 from UniProtKB/Swiss-Prot  Length:86

    Alignment length:36
                                    59        69        79      
           H4A03_HAPHA   50 ECLGFGKGCNPSNDQCCKSSNLVCSRKHRWCKYEIG 85
               SCOP domains d1ryva_ A: Hainantoxin-IV            SCOP domains
               CATH domains ------------------------------------ CATH domains
               Pfam domains ------------------------------------ Pfam domains
         Sec.struct. author ......................ee......ee.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------ SAPs(SNPs)
                PROSITE (2) -HWTX_1  PDB: A:2-31           ----- PROSITE (2)
                 Transcript ------------------------------------ Transcript
                  1ryv A  1 ECLGFGKGCNPSNDQCCKSSNLVCSRAHRWCKYEIx 36
                                    10        20        30     |
                                                              36-NH2
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → 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  (0, 0)

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

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (4, 12)

NMR Structure(hide GO term definitions)
Chain A   (H4A02_HAPHA | D2Y233)
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.

Chain A   (H4A03_HAPHA | D2Y2D7)
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.

Chain A   (H4A01_HAPHA | D2Y232)
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
        H4A01_HAPHA | D2Y232: 1niy 1ryg
        H4A02_HAPHA | D2Y233: 1niy 1ryg
        H4A03_HAPHA | D2Y2D7: 1niy 1ryg

(-) Related Entries Specified in the PDB File

1niy THREE-DIMENSIONAL SOLUTION STRUCTURE OF HAINANTOXIN-IV
1ryg THE SAME PROTEIN WITH R29A MUTANT