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(-) Description

Title :  THE CRYSTAL STRUCTURE OF ERABUTOXIN A AT 2.0 ANGSTROMS RESOLUTION
 
Authors :  P. W. R. Corfield, T. -J. Lee, B. W. Low
Date :  20 Dec 89  (Deposition) - 15 Apr 90  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym./Biol. Unit :  A
Keywords :  Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  P. W. Corfield, T. J. Lee, B. W. Low
The Crystal Structure Of Erabutoxin A At 2. 0-A Resolution.
J. Biol. Chem. V. 264 9239 1989
PubMed-ID: 2722828
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ERABUTOXIN A
    Chains: A
    Engineered: YES
    Organism Common: BROAD-BANDED BLUE SEA KRAIT
    Organism Scientific: LATICAUDA SEMIFASCIATA
    Organism Taxid: 8631

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (1, 1)
No.NameCountTypeFull Name
1SO41Ligand/IonSULFATE ION

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:1 , ASN A:5 , LYS A:15 , GLU A:56 , HOH A:103 , HOH A:112 , HOH A:127BINDING SITE FOR RESIDUE SO4 A 63
2CMRAUTHORCYS A:3 , PHE A:4 , CYS A:17 , CYS A:24 , TYR A:25 , GLY A:40 , CYS A:41 , GLY A:42 , CYS A:43 , CYS A:54 , CYS A:55 , CYS A:60 , ASN A:61RESIDUES, INCLUDING FOUR CYSTINE LINKAGES, WHICH AID IN MAINTAINING THE UNIQUE TOXIN FOLD CONFORMATION
3FNRAUTHORLYS A:27 , TRP A:29 , ARG A:33 , LYS A:47RESIDUES IN THE REACTIVE SITE SHOWN CHEMICALLY TO BIND DIRECTLY TO RECEPTOR
4RCTAUTHORTYR A:25 , LYS A:27 , TRP A:29 , ASP A:31 , PHE A:32 , ARG A:33 , GLY A:34 , ILE A:36 , GLU A:38 , GLY A:40 , CYS A:41 , GLY A:42 , CYS A:43 , PRO A:44 , VAL A:46 , LYS A:47 , GLY A:49 , ILE A:50 , LEU A:52 , CYS A:54THE SERIES INVARIANT RESIDUES OF THE REACTIVE SITE. FIVE OF THESE RESIDUES (PHE 32, ILE 36, GLU 38, ILE 50, LEU 52) ARE TYPE-CONSERVED THROUGHOUT THE SERIES. THE ENUMERATION IS FOR A 62-RESIDUE TOXIN

(-) 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 5EBX)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 5EBX)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 5EBX)

(-) Exons   (0, 0)

(no "Exon" information available for 5EBX)

(-) 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
                                                                                             
               SCOP domains d5ebxa_ A: Erabutoxin A                                        SCOP domains
               CATH domains 5ebxA00 A:1-62 CD59                                            CATH domains
               Pfam domains -------------------------------------------------------------- Pfam domains
         Sec.struct. author eeeee.......eeeee.....eeeeeeeee..eeeeeeeee.......eeeeee....... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------- Transcript
                  5ebx A  1 RICFNHQSSQPQTTKTCSPGESSCYNKQWSDFRGTIIERGCGCPTVKPGIKLSCCESEVCNN 62
                                    10        20        30        40        50        60
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 Classification and Annotation

(-) SCOP Domains  (1, 1)

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

(-) CATH Domains  (1, 1)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 5EBX)

(-) Gene Ontology  (3, 3)

Asymmetric/Biological Unit(hide GO term definitions)

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        3S1EA_LATSE | P60775: 1qkd 1qke 2era 3era

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3ebx