4KUJ

Structural and functional characterization of a novel Alpha Kinase from Entamoeba histolytica

• PDB DOI: https://doi.org/10.2210/pdb4KUJ/pdb

• Classification: TRANSFERASE
• Organism(s): Entamoeba histolytica HM-1:IMSS-B
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-05-22 Released: 2014-05-28 
• Deposition Author(s): Rehman, S.A.A., Tarique, K.F., Bhattacharya, A., Gourinath, S., Mansuri, M.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.99 Å
• R-Value Free: 0.239 
• R-Value Work: 0.209 
• R-Value Observed: 0.210 

Literature

Structural and functional characterization of a novel Alpha Kinase from Entamoeba histolytica

Rehman, S.A.A., Tarique, K.F., Bhattacharya, A., Gourinath, S., Mansuri, M.S.

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.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 3 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 67.27 kDa 
• Atom Count: 4,484 
• Modelled Residue Count: 531 
• Deposited Residue Count: 576 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein kinase, putative	A, B	288	Entamoeba histolytica HM-1:IMSS-B	Mutation(s): 0  Gene Names: EHI8A_073090
UniProt
Find proteins for M3TP73 (Entamoeba histolytica HM-1:IMSS-B) Explore M3TP73  Go to UniProtKB:  M3TP73

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PEG	D [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N
ZN	C [auth A], E [auth B]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
TPO	A, B	L-PEPTIDE LINKING	C4 H10 N O6 P		THR

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.99 Å
• R-Value Free: 0.239 
• R-Value Work: 0.209 
• R-Value Observed: 0.210 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.057	α = 90
b = 89.634	β = 90
c = 122.92	γ = 90

Software Package:

Software Name	Purpose
DNA	data collection
PHASER	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-05-28 
Deposition Author(s): Rehman, S.A.A., Tarique, K.F., Bhattacharya, A., Gourinath, S., Mansuri, M.S.

Revision History  

• Version 1.0: 2014-05-28
  Type: Initial release
  
• Version 1.1: 2020-12-02
  Changes: Database references, Derived calculations, Structure summary
• Version 1.2: 2024-10-30
  Changes: Data collection, Database references, Structure summary