2A0U

Crystal structure of the eukaryotic initiation factor 2B from Leishmania major at 2.1 A resolution

• PDB DOI: https://doi.org/10.2210/pdb2A0U/pdb

• Classification: TRANSLATION
• Organism(s): Leishmania major
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-06-17 Released: 2005-08-02 
• Deposition Author(s): Bosch, J., Hol, W.G.J., Structural Genomics of Pathogenic Protozoa Consortium (SGPP)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.264 
• R-Value Work: 0.214 
• R-Value Observed: 0.216 

Literature

Crystal structure of the eukaryotic initiation factor 2B from Leishmania major at 2.1 A resolution

Bosch, J., Hol, W.G.J., Structural Genomics of Pathogenic Protozoa Consortium (SGPP)

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 84.61 kDa 
• Atom Count: 5,968 
• Modelled Residue Count: 741 
• Deposited Residue Count: 766 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
initiation factor 2B	A, B	383	Leishmania major	Mutation(s): 0  Gene Names: CHR36_tmp.296 EC: 5.3.1.23
UniProt
Find proteins for Q4Q0R9 (Leishmania major) Explore Q4Q0R9  Go to UniProtKB:  Q4Q0R9

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth B], I [auth B], J [auth B], K [auth B], L [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.264 
• R-Value Work: 0.214 
• R-Value Observed: 0.216 
• Space Group: F 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 103.733	α = 90
b = 164.569	β = 90
c = 172.129	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOSFLM	data reduction
CCP4	data scaling
SHELXS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-08-02 
Deposition Author(s): Bosch, J., Hol, W.G.J., Structural Genomics of Pathogenic Protozoa Consortium (SGPP)

Revision History  

• Version 1.0: 2005-08-02
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.3: 2024-11-06
  Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary