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(-) Description

Title :  THE CRYSTAL STRUCTURE OF ALPHA-BUNGAROTOXIN AT 2.5 ANGSTROMS RESOLUTION. RELATION TO SOLUTION STRUCTURE AND BINDING TO ACETYLCHOLINE RECEPTOR
 
Authors :  R. Love, R. Stroud
Date :  19 Feb 86  (Deposition) - 07 May 86  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.50
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Postsynaptic Neurotoxin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  R. A. Love, R. M. Stroud
The Crystal Structure Of Alpha-Bungarotoxin At 2. 5 A Resolution: Relation To Solution Structure And Binding To Acetylcholine Receptor.
Protein Eng. V. 1 37 1986
PubMed-ID: 3507686  |  Reference-DOI: 10.1093/PROTEIN/1.1.37
(for further references see the PDB file header)

(-) Compounds

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

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 2ABX)

(-) Sites  (0, 0)

(no "Site" information available for 2ABX)

(-) SS Bonds  (10, 10)

Asymmetric/Biological Unit
No.Residues
1A:3 -A:23
2A:16 -A:44
3A:29 -A:33
4A:48 -A:59
5A:60 -A:65
6B:3 -B:23
7B:16 -B:44
8B:29 -B:33
9B:48 -B:59
10B:60 -B:65

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2ABX)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2ABX)

(-) PROSITE Motifs  (1, 2)

Asymmetric/Biological Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SNAKE_TOXINPS00272 Snake toxins signature.3L21A_BUNMU64-84
 		  2A:43-63
B:43-63

(-) Exons   (0, 0)

(no "Exon" information available for 2ABX)

(-) 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:74
 aligned with 3L21A_BUNMU | P60615 from UniProtKB/Swiss-Prot  Length:95

    Alignment length:74
                                    31        41        51        61        71        81        91    
           3L21A_BUNMU   22 IVCHTTATSPISAVTCPPGENLCYRKMWCDAFCSSRGKVVELGCAATCPSKKPYEEVTCCSTDKCNPHPKQRPG 95
               SCOP domains d2abxa_ A: Bungarotoxin                                                    SCOP domains
               CATH domains 2abxA00 A:1-74 CD59                                                        CATH domains
               Pfam domains -------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ........................ee..............ee................................ Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------SNAKE_TOXIN          ----------- PROSITE
                 Transcript -------------------------------------------------------------------------- Transcript
                  2abx A  1 IVCHTTATIPSSAVTCPPGENLCYRKMWCDAFCSSRGKVVELGCAATCPSKKPYEEVTCCSTDKCNHPPKRQPG 74
                                    10        20        30        40        50        60        70    


Chain B from PDB  Type:PROTEIN  Length:74
 aligned with 3L21A_BUNMU | P60615 from UniProtKB/Swiss-Prot  Length:95

    Alignment length:74
                                    31        41        51        61        71        81        91    
           3L21A_BUNMU   22 IVCHTTATSPISAVTCPPGENLCYRKMWCDAFCSSRGKVVELGCAATCPSKKPYEEVTCCSTDKCNPHPKQRPG 95
               SCOP domains d2abxb_ B: Bungarotoxin                                                    SCOP domains
               CATH domains 2abxB00 B:1-74 CD59                                                        CATH domains
               Pfam domains -------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...ee.......ee.........eee..............ee..............eee............... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------SNAKE_TOXIN          ----------- PROSITE
                 Transcript -------------------------------------------------------------------------- Transcript
                  2abx B  1 IVCHTTATIPSSAVTCPPGENLCYRKMWCDAFCSSRGKVVELGCAATCPSKKPYEEVTCCSTDKCNHPPKRQPG 74
                                    10        20        30        40        50        60        70
   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 2ABX)

(-) Gene Ontology  (4, 4)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (3L21A_BUNMU | P60615)
molecular function
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
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
        3L21A_BUNMU | P60615: 1abt 1bxp 1haa 1haj 1hc9 1hoy 1idg 1idh 1idi 1idl 1ik8 1ikc 1jbd 1kc4 1kfh 1kl8 1l4w 1ljz 1lk1 1rgj 2btx

(-) Related Entries Specified in the PDB File

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