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(-) Description

Title :  CRYSTAL STRUCTURE OF KAPPA-BUNGAROTOXIN AT 2.3-ANGSTROM RESOLUTION
 
Authors :  J. C. Dewan, G. A. Grant, J. C. Sacchettini
Date :  13 Jul 94  (Deposition) - 20 Dec 94  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.30
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A,B  (6x)
Keywords :  Toxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  J. C. Dewan, G. A. Grant, J. C. Sacchettini
Crystal Structure Of Kappa-Bungarotoxin At 2. 3-A Resolution.
Biochemistry V. 33 13147 1994
PubMed-ID: 7947721  |  Reference-DOI: 10.1021/BI00248A026
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - KAPPA-BUNGAROTOXIN
    Chains: A, B
    Engineered: YES
    Organism Common: MANY-BANDED KRAIT
    Organism Scientific: BUNGARUS MULTICINCTUS
    Organism Taxid: 8616

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit : AB
Biological Unit 1 (6x): AB

Summary Information (see also Sequences/Alignments below)

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

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

(-) Sites  (0, 0)

(no "Site" information available for 1KBA)

(-) SS Bonds  (10, 10)

Asymmetric Unit
No.Residues
1A:3 -A:21
2A:14 -A:42
3A:27 -A:31
4A:46 -A:58
5A:59 -A:64
6B:3 -B:21
7B:14 -B:42
8B:27 -B:31
9B:46 -B:58
10B:59 -B:64

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (1, 2)

Asymmetric Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SNAKE_TOXINPS00272 Snake toxins signature.3LKB_BUNMU62-83
 		  2A:41-62
B:41-62
Biological Unit 1 (1, 12)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SNAKE_TOXINPS00272 Snake toxins signature.3LKB_BUNMU62-83
 		  12A:41-62
B:41-62

(-) Exons   (0, 0)

(no "Exon" information available for 1KBA)

(-) Sequences/Alignments

Asymmetric 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:66
 aligned with 3LKB_BUNMU | P01398 from UniProtKB/Swiss-Prot  Length:87

    Alignment length:66
                                    31        41        51        61        71        81      
            3LKB_BUNMU   22 RTCLISPSSTPQTCPNGQDICFLKAQCDKFCSIRGPVIEQGCVATCPQFRSNYRSLLCCTTDNCNH 87
               SCOP domains d1kbaa_ A: Bungarotoxin                                            SCOP domains
               CATH domains 1kbaA00 A:1-66 CD59                                                CATH domains
               Pfam domains ------------------------------------------------------------------ Pfam domains
         Sec.struct. author eeeee....eeeee.....eeeeeee...hhhhhh.eeeeeee..........eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ----------------------------------------SNAKE_TOXIN           ---- PROSITE
                 Transcript ------------------------------------------------------------------ Transcript
                  1kba A  1 RTCLISPSSTPQTCPNGQDICFLKAQCDKFCSIRGPVIEQGCVATCPQFRSNYRSLLCCTTDNCNH 66
                                    10        20        30        40        50        60      


Chain B from PDB  Type:PROTEIN  Length:66
 aligned with 3LKB_BUNMU | P01398 from UniProtKB/Swiss-Prot  Length:87

    Alignment length:66
                                    31        41        51        61        71        81      
            3LKB_BUNMU   22 RTCLISPSSTPQTCPNGQDICFLKAQCDKFCSIRGPVIEQGCVATCPQFRSNYRSLLCCTTDNCNH 87
               SCOP domains d1kbab_ B: Bungarotoxin                                            SCOP domains
               CATH domains 1kbaB00 B:1-66 CD59                                                CATH domains
               Pfam domains ------------------------------------------------------------------ Pfam domains
         Sec.struct. author eeeee....eeeee.....eeeeeee..........eeeeeee..........eeeeeee...... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ----------------------------------------SNAKE_TOXIN           ---- PROSITE
                 Transcript ------------------------------------------------------------------ Transcript
                  1kba B  1 RTCLISPSSTPQTCPNGQDICFLKAQCDKFCSIRGPVIEQGCVATCPQFRSNYRSLLCCTTDNCNH 66
                                    10        20        30        40        50        60
   Legend:   → Mismatch (orange background)
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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, 2)

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

(-) CATH Domains  (1, 2)

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

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (3, 3)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (3LKB_BUNMU | P01398)
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
        3LKB_BUNMU | P01398: 2nbt

(-) Related Entries Specified in the PDB File

1nbt 1NBT REPORTS AN NMR STRUCTURE DETERMINATION FOR KAPPA- BUNGAROTOXIN. SEE THE FOLLOWING TWO REFERENCES: M.J.SUTCLIFFE, C.M.DOBSON, R.E.OSWALD, "SOLUTION STRUCTURE OF NEURONAL BUNGAROTOXIN DETERMINED BY TWO-DIMENSIONAL NMR SPECTROSCOPY: CALCULATION OF TERTIARY STRUCTURE USING SYSTEMATIC HOMOLOGOUS MODEL BUILDING, DYNAMICAL SIMULATED ANNEALING, AND RESTRAINED MOLECULAR DYNAMICS". BIOCHEMISTRY (1992) V. 31, 2962-2970. R.E.OSWALD, M.J.SUTCLIFFE, M.BAMBERGER, R.H.LORING, E.BRASWELL, C.M.DOBSON, "SOLUTION STRUCTURE OF NEURONAL BUNGAROTOXIN DETERMINED BY TWO- DIMENSIONAL NMR SPECTROSCOPY: SEQUENCE-SPECIFIC ASSIGNMENTS, SECONDARY STRUCTURE, AND DIMER FORMATION". BIOCHEMISTRY (1991) V. 30, 4901-4909.