3CXS

Crystal structure of human GNA1


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Acceptor substrate binding revealed by crystal structure of human glucosamine-6-phosphate N-acetyltransferase 1

Wang, J.Liu, X.Liang, Y.-H.Li, L.-F.Su, X.-D.

(2008) FEBS Lett 582: 2973-2978

  • DOI: https://doi.org/10.1016/j.febslet.2008.07.040
  • Primary Citation of Related Structures:  
    3CXP, 3CXQ, 3CXS

  • PubMed Abstract: 

    Glucosamine-6-phosphate (GlcN6P) N-acetyltransferase 1 (GNA1) is a key enzyme in the pathway toward biosynthesis of UDP-N-acetylglucosamine, an important donor substrate for N-linked glycosylation. GNA1 catalyzes the formation of N-acetylglucosamine-6-phosphate (GlcNAc6P) from acetyl-CoA (AcCoA) and the acceptor substrate GlcN6P. Here, we report crystal structures of human GNA1, including apo GNA1, the GNA1-GlcN6P complex and an E156A mutant. Our work showed that GlcN6P binds to GNA1 without the help of AcCoA binding. Structural analyses and mutagenesis studies have shed lights on the charge distribution in the GlcN6P binding pocket, and an important role for Glu156 in the substrate binding. Hence, these findings have broadened our knowledge of structural features required for the substrate affinity of GNA1.


  • Organizational Affiliation

    National Laboratory of Protein Engineering and Plant Genetic Engineering, College of Life Sciences, Peking University, Beijing 100871, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glucosamine 6-phosphate N-acetyltransferase184Homo sapiensMutation(s): 0 
Gene Names: GNPNAT1
EC: 2.3.1.4
UniProt & NIH Common Fund Data Resources
Find proteins for Q96EK6 (Homo sapiens)
Explore Q96EK6 
Go to UniProtKB:  Q96EK6
PHAROS:  Q96EK6
GTEx:  ENSG00000100522 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ96EK6
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.70 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.241 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 50.133α = 90
b = 50.133β = 90
c = 142.611γ = 90
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
PDB_EXTRACTdata extraction
LSCALEdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-09-16
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2017-10-25
    Changes: Refinement description
  • Version 1.3: 2023-11-01
    Changes: Data collection, Database references, Refinement description