3M4Q

Entamoeba histolytica asparaginyl-tRNA synthetase (AsnRS)

• PDB DOI: https://doi.org/10.2210/pdb3M4Q/pdb

• Classification: LIGASE
• Organism(s): Entamoeba histolytica
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-03-11 Released: 2010-03-23 
• Deposition Author(s): Larson, E.T., Merritt, E.A., Medical Structural Genomics of Pathogenic Protozoa (MSGPP)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.267 
• R-Value Work: 0.220 
• R-Value Observed: 0.222 

Literature

X-ray crystal structure of asparaginyl-tRNA synthetase from the eukaryotic human pathogen Entamoeba histolytica.

Larson, E.T., Kim, J.E., Zhang, L., Napuli, A., Kelley, A., Castaneda, L., Verlinde, C.L.M.J., Van Voorhis, W.C., Buckner, F.S., Fan, E., Hol, W.G.J., Merritt, E.A.

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 and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 105.01 kDa 
• Atom Count: 6,742 
• Modelled Residue Count: 866 
• Deposited Residue Count: 912 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Asparaginyl-tRNA synthetase, putative	A, B	456	Entamoeba histolytica	Mutation(s): 0  Gene Names: 159.m00096, EHI_126920 EC: 6.1.1.22
UniProt
Find proteins for C4LWW8 (Entamoeba histolytica (strain ATCC 30459 / HM-1:IMSS / ABRM)) Explore C4LWW8  Go to UniProtKB:  C4LWW8

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.267 
• R-Value Work: 0.220 
• R-Value Observed: 0.222 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 102.047	α = 90
b = 102.047	β = 90
c = 205.015	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
Blu-Ice	data collection
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-03-23 
Deposition Author(s): Larson, E.T., Merritt, E.A., Medical Structural Genomics of Pathogenic Protozoa (MSGPP)

Revision History  

• Version 1.0: 2010-03-23
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-11-08
  Changes: Refinement description
• Version 1.3: 2023-09-06
  Changes: Data collection, Database references, Refinement description