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(-) Description

Title :  STRUCTURE AND FUNCTION OF SNAKE VENOM CURARIMIMETIC NEUROTOXINS
 
Authors :  D. Tsernoglou, G. A. Petsko
Date :  08 Aug 80  (Deposition) - 27 Jan 81  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.38
Chains :  Asym./Biol. Unit :  A
Keywords :  Neurotoxin (Post-Synaptic) (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  D. Tsernoglou, G. A. Petsko, R. A. Hudson
Structure And Function Of Snake Venom Curarimimetic Neurotoxins.
Mol. Pharmacol. V. 14 710 1978
PubMed-ID: 683181
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - NEUROTOXIN B
    ChainsA
    EngineeredYES
    Organism CommonBROAD-BANDED BLUE SEA KRAIT
    Organism ScientificLATICAUDA SEMIFASCIATA
    Organism Taxid8631

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

Asymmetric/Biological Unit (1, 2)
No.NameCountTypeFull Name
1SO42Ligand/IonSULFATE ION

(-) Sites  (5, 5)

Asymmetric Unit (5, 5)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:1 , ILE A:2 , GLU A:58 , HOH A:65 , HOH A:129BINDING SITE FOR RESIDUE SO4 A 63
2AC2SOFTWAREASN A:5 , LYS A:15 , HOH A:82BINDING SITE FOR RESIDUE SO4 A 64
3AMSAUTHORASP A:31 , PHE A:32 , ARG A:33RESIDUES FORMING THE PUTATIVE ACETYLCHOLINEMIMETIC SITE
4ELSAUTHORLYS A:27 , LYS A:47RESIDUES FORMING THE ESSENTIAL LYSINE SURFACE
5ETSAUTHORTRP A:29ESSENTIAL TRYPTOPHAN

(-) SS Bonds  (4, 4)

Asymmetric/Biological Unit
No.Residues
1A:3 -A:24
2A:17 -A:41
3A:43 -A:54
4A:55 -A:60

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 1)

Asymmetric/Biological Unit (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_3S1EB_LATSE_001 *V80R3S1EB_LATSE  ---  ---AV59R
   * ID not provided by source

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SNAKE_TOXINPS00272 Snake toxins signature.3S1EB_LATSE61-79  1A:40-58

(-) Exons   (0, 0)

(no "Exon" information available for 1NXB)

(-) Sequences/Alignments

Asymmetric/Biological Unit
   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:62
 aligned with 3S1EB_LATSE | Q90VW1 from UniProtKB/Swiss-Prot  Length:83

    Alignment length:62
                                    31        41        51        61        71        81  
           3S1EB_LATSE   22 RICFNHQSSQPQTTKTCSPGESSCYHKQWSDFRGTIIERGCGCPTVKPGIKLSCCESEVCNN 83
               SCOP domains d1nxba_ A: Erabutoxin B (also neurotoxin B)                    SCOP domains
               CATH domains 1nxbA00 A:1-62 CD59                                            CATH domains
               Pfam domains -------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee.....eeeee.......eeeeeee..eeeeeee..........eeee........ Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------R--- SAPs(SNPs)
                    PROSITE ---------------------------------------SNAKE_TOXIN        ---- PROSITE
                 Transcript -------------------------------------------------------------- Transcript
                  1nxb A  1 RICFNQHSSQPQTTKTCSPGESSCYHKQWSDFRGTIIERGCGCPTVKPGIKLSCCESEVCNN 62
                                    10        20        30        40        50        60  

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  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)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (3, 3)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (3S1EB_LATSE | Q90VW1)
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: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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 Related Entries

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

UniProtKB/Swiss-Prot
        3S1EB_LATSE | Q90VW11era 1fra 3ebx 6ebx

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