3OC9

Crystal structure of putative UDP-N-acetylglucosamine pyrophosphorylase from Entamoeba histolytica


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.189 
  • R-Value Observed: 0.191 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Literature

Structure of uridine diphosphate N-acetylglucosamine pyrophosphorylase from Entamoeba histolytica.

Edwards, T.E.Gardberg, A.S.Phan, I.Q.Zhang, Y.Staker, B.L.Myler, P.J.Lorimer, D.D.

(2015) Acta Crystallogr Sect F Struct Biol Cryst Commun 71: 560-565

  • DOI: https://doi.org/10.1107/S2053230X1500179X
  • Primary Citation of Related Structures:  
    3OC9

  • PubMed Abstract: 

    Uridine diphosphate N-acetylglucosamine pyrophosphorylase (UAP) catalyzes the final step in the synthesis of UDP-GlcNAc, which is involved in cell-wall biogenesis in plants and fungi and in protein glycosylation. Small-molecule inhibitors have been developed against UAP from Trypanosoma brucei that target an allosteric pocket to provide selectivity over the human enzyme. A 1.8 Å resolution crystal structure was determined of UAP from Entamoeba histolytica, an anaerobic parasitic protozoan that causes amoebic dysentery. Although E. histolytica UAP exhibits the same three-domain global architecture as other UAPs, it appears to lack three α-helices at the N-terminus and contains two amino acids in the allosteric pocket that make it appear more like the enzyme from the human host than that from the other parasite T. brucei. Thus, allosteric inhibitors of T. brucei UAP are unlikely to target Entamoeba UAPs.


  • Organizational Affiliation

    Seattle Structural Genomics Center for Infectious Disease, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
UDP-N-acetylglucosamine pyrophosphorylase405Entamoeba histolytica HM-1:IMSSMutation(s): 0 
Gene Names: EHI_021200
EC: 2.7.7.23
UniProt
Find proteins for C4M036 (Entamoeba histolytica (strain ATCC 30459 / HM-1:IMSS / ABRM))
Explore C4M036 
Go to UniProtKB:  C4M036
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupC4M036
Sequence Annotations
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.52α = 90
b = 77.54β = 90
c = 86.87γ = 90
Software Package:
Software NamePurpose
XSCALEdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-08-18
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2015-05-13
    Changes: Database references
  • Version 1.3: 2015-05-20
    Changes: Database references
  • Version 1.4: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description