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(-) Description

Title :  RECOMBINANT ERABUTOXIN A (S8T MUTANT)
 
Authors :  J. F. Gaucher, R. Menez, B. Arnoux, A. Menez, A. Ducruix
Date :  25 Jun 97  (Deposition) - 31 Dec 97  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.70
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Snake Neurotoxin, Venom, Postsynaptic Neurotoxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  J. F. Gaucher, R. Menez, B. Arnoux, A. Menez, A. Ducruix
High Resolution X-Ray Analysis Of Two Mutants Of A Curaremimetic Snake Toxin
Eur. J. Biochem. V. 267 1323 2000
PubMed-ID: 10691969  |  Reference-DOI: 10.1046/J.1432-1327.2000.01099.X
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ERABUTOXIN A
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PEZZ 18
    Expression System Strain: HB 101
    Expression System Taxid: 562
    Mutation: YES
    Organism Common: BROAD-BANDED BLUE SEA KRAIT
    Organism Scientific: LATICAUDA SEMIFASCIATA
    Organism Taxid: 8631

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 3)

Asymmetric/Biological Unit (1, 3)
No.NameCountTypeFull Name
1SCN3Ligand/IonTHIOCYANATE ION

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:33 , CYS A:54 , SER B:23 , CYS B:54BINDING SITE FOR RESIDUE SCN B 101
2AC2SOFTWARESER A:18 , PRO A:19 , GLY A:20 , ARG B:33 , THR B:45 , LYS B:47BINDING SITE FOR RESIDUE SCN B 102
3AC3SOFTWAREASN A:26 , SER A:53 , CYS A:55 , HOH A:246 , SER B:53BINDING SITE FOR RESIDUE SCN A 103

(-) SS Bonds  (8, 8)

Asymmetric/Biological Unit
No.Residues
1A:3 -A:24
2A:17 -A:41
3A:43 -A:54
4A:55 -A:60
5B:3 -B:24
6B:17 -B:41
7B:43 -B:54
8B:55 -B:60

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3ERA)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3ERA)

(-) PROSITE Motifs  (1, 2)

Asymmetric/Biological Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SNAKE_TOXINPS00272 Snake toxins signature.3S1EA_LATSE61-79
 		  2A:40-58
B:40-58

(-) Exons   (0, 0)

(no "Exon" information available for 3ERA)

(-) 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 3S1EA_LATSE | P60775 from UniProtKB/Swiss-Prot  Length:83

    Alignment length:62
                                    31        41        51        61        71        81  
           3S1EA_LATSE   22 RICFNHQSSQPQTTKTCSPGESSCYNKQWSDFRGTIIERGCGCPTVKPGIKLSCCESEVCNN 83
               SCOP domains d3eraa_ A: Erabutoxin A                                        SCOP domains
               CATH domains 3eraA00 A:1-62 CD59                                            CATH domains
               Pfam domains -------------------------------------------------------------- Pfam domains
         Sec.struct. author eeeee.......eeeee.....eeeeeeeee..eeeeeeee........eeeeee....... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------SNAKE_TOXIN        ---- PROSITE
                 Transcript -------------------------------------------------------------- Transcript
                  3era A  1 RICFNHQTSQPQTTKTCSPGESSCYNKQWSDFRGTIIERGCGCPTVKPGIKLSCCESEVCNN 62
                                    10        20        30        40        50        60  


Chain B from PDB  Type:PROTEIN  Length:62
 aligned with 3S1EA_LATSE | P60775 from UniProtKB/Swiss-Prot  Length:83

    Alignment length:62
                                    31        41        51        61        71        81  
           3S1EA_LATSE   22 RICFNHQSSQPQTTKTCSPGESSCYNKQWSDFRGTIIERGCGCPTVKPGIKLSCCESEVCNN 83
               SCOP domains d3erab_ B: Erabutoxin A                                        SCOP domains
               CATH domains 3eraB00 B:1-62 CD59                                            CATH domains
               Pfam domains -------------------------------------------------------------- Pfam domains
         Sec.struct. author eeeee.......eeeee.....eeeeeeeee..eeeeeeee........eeeeee....... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------SNAKE_TOXIN        ---- PROSITE
                 Transcript -------------------------------------------------------------- Transcript
                  3era B  1 RICFNHQTSQPQTTKTCSPGESSCYNKQWSDFRGTIIERGCGCPTVKPGIKLSCCESEVCNN 62
                                    10        20        30        40        50        60
   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, 2)

Asymmetric/Biological Unit
(-)
Class: Small proteins (3458)

(-) CATH Domains  (1, 2)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3ERA)

(-) Gene Ontology  (3, 3)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (3S1EA_LATSE | P60775)
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

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UniProtKB/Swiss-Prot
        3S1EA_LATSE | P60775: 1qkd 1qke 2era 5ebx

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