Biological Assembly 1  

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 8.6 kDa 
• Atom Count: 663 
• Modelled Residue Count: 74 
• Deposited Residue Count: 77 
• Unique protein chains: 1

 1BCG

SCORPION TOXIN BJXTR-IT

• PDB DOI: 10.2210/pdb1BCG/pdb

• Classification: EXCITATORY NEUROTOXIN
• Organism(s): Hottentotta judaicus
• Mutation(s): No 


• Deposited: 1998-04-29 Released: 1998-11-18 
• Deposition Author(s): Oren, D., Froy, O., Amit, E., Kleinberger-Doron, N., Gurevitz, M., Shaanan, B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.256 
• R-Value Work: 0.209 
• R-Value Observed: 0.209 

Literature

An excitatory scorpion toxin with a distinctive feature: an additional alpha helix at the C terminus and its implications for interaction with insect sodium channels.

Oren, D.A., Froy, O., Amit, E., Kleinberger-Doron, N., Gurevitz, M., Shaanan, B.

(1998) Structure 6: 1095-1103

• PubMed: 9753689 
• DOI: 10.1016/s0969-2126(98)00111-7
• Primary Citation of Related Structures:  
  1BCG


• PubMed Abstract: 
  

Scorpion neurotoxins, which bind and modulate sodium channels, have been divided into two groups, the alpha and beta toxins, according to their activities. The beta-toxin class includes the groups of excitatory and depressant toxins, which differ in their mode of action and are highly specific against insects. The three-dimensional structures of several alpha and beta toxins have been determined at high resolution, but no detailed 3D structure of an excitatory toxin has been presented so far.

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Organizational Affiliation: 

The Wolfson Centre for Applied Structural Biology Institute of Life Sciences The Hebrew University of Jerusalem Givat Ram, Jerusalem, 91904, Israel.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
TOXIN BJXTR-IT	A	77	Hottentotta judaicus	Mutation(s): 0
UniProt
Find proteins for P56637 (Hottentotta judaicus) Explore P56637  Go to UniProtKB:  P56637

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.256 
• R-Value Work: 0.209 
• R-Value Observed: 0.209 
• Space Group: I 4₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 40.828	α = 90
b = 40.828	β = 90
c = 191.36	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
CNS	refinement
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-11-18 
Deposition Author(s): Oren, D., Froy, O., Amit, E., Kleinberger-Doron, N., Gurevitz, M., Shaanan, B.

Revision History  

• Version 1.0: 1998-11-18
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance