2ATB

Triple mutant 8D9D10V of scorpion toxin LQH-alpha-IT

• PDB DOI: https://doi.org/10.2210/pdb2ATB/pdb

• Classification: TOXIN
• Organism(s): Leiurus quinquestriatus
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2005-08-24 Released: 2006-09-05 
• Deposition Author(s): Kahn, R., Karbat, I., Gurevitz, M., Frolow, F.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 
  0.170 (Depositor), 0.180 (DCC) 
• R-Value Work: 
  0.127 (Depositor), 0.140 (DCC) 
• R-Value Observed: 
  0.129 (Depositor) 

Starting Model: experimental

Literature

X-ray structures of Lqh-alpha-IT and Lqh-alpha-IT8D9D10V mutant

Kahn, R., Karbat, I., Gurevitz, M., Frolow, F.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Macromolecule Content

• Total Structure Weight: 14.92 kDa 
• Atom Count: 1,253 
• Modelled Residue Count: 130 
• Deposited Residue Count: 130 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
neurotoxin alpha-IT	A, B	65	Leiurus quinquestriatus	Mutation(s): 3
UniProt
Find proteins for P17728 (Leiurus hebraeus) Explore P17728  Go to UniProtKB:  P17728

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	F [auth B], G [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
NO3	C [auth A], E [auth B]	NITRATE ION N O3 NHNBFGGVMKEFGY-UHFFFAOYSA-N
CL	D [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free:  0.170 (Depositor), 0.180 (DCC) 
• R-Value Work:  0.127 (Depositor), 0.140 (DCC) 
• R-Value Observed: 0.129 (Depositor) 

Space Group: I 4₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.907	α = 90
b = 70.907	β = 90
c = 170.681	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
ProDC	data collection

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-09-05 
Deposition Author(s): Kahn, R., Karbat, I., Gurevitz, M., Frolow, F.

Revision History  

• Version 1.0: 2006-09-05
  Type: Initial release
  
• Version 1.1: 2008-04-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-11
  Changes: Refinement description
• Version 1.4: 2021-11-10
  Changes: Database references, Derived calculations
• Version 1.5: 2023-10-25
  Changes: Data collection, Refinement description
• Version 1.6: 2024-10-09
  Changes: Structure summary