1LXA

UDP N-ACETYLGLUCOSAMINE ACYLTRANSFERASE

• PDB DOI: https://doi.org/10.2210/pdb1LXA/pdb

• Classification: ACYLTRANSFERASE
• Organism(s): Escherichia coli K-12
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1995-10-07 Released: 1995-12-07 
• Deposition Author(s): Roderick, S.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Work: 0.184 

Literature

A left-handed parallel beta helix in the structure of UDP-N-acetylglucosamine acyltransferase.

Raetz, C.R., Roderick, S.L.

(1995) Science 270: 997-1000

• PubMed: 7481807 
• DOI: https://doi.org/10.1126/science.270.5238.997
• Primary Citation of Related Structures:  
  1LXA


• PubMed Abstract: 
  

  UDP-N-acetylglucosamine 3-O-acyltransferase (LpxA) catalyzes the transfer of (R)-3-hydroxymyristic acid from its acyl carrier protein thioester to UDP-N-acetylglucosamine. LpxA is the first enzyme in the lipid A biosynthetic pathway and is a target for the design of antibiotics. The x-ray crystal structure of LpxA has been determined to 2.6 angstrom resolution and reveals a domain motif composed of parallel beta strands, termed a left-handed parallel beta helix (L beta H). This unusual fold displays repeated violations of the protein folding constraint requiring right-handed crossover connections between strands of parallel beta sheets and may be present in other enzymes that share amino acid sequence homology to the repeated hexapeptide motif of LpxA.

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Organizational Affiliation: 

Department of Biochemistry, Duke University Medical Center, Durham, NC 22710, USA.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors and generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 28.12 kDa 
• Atom Count: 1,974 
• Modelled Residue Count: 262 
• Deposited Residue Count: 262 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
UDP N-ACETYLGLUCOSAMINE O-ACYLTRANSFERASE	A	262	Escherichia coli K-12	Mutation(s): 0  Gene Names: LPXA EC: 2.3.1.129
UniProt
Find proteins for P0A722 (Escherichia coli (strain K12)) Explore P0A722  Go to UniProtKB:  P0A722

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.60 Å
• R-Value Work: 0.184 
• Space Group: P 2₁ 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 99	α = 90
b = 99	β = 90
c = 99	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
TNT	refinement
X-PLOR	refinement
XDS	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-12-07 
Deposition Author(s): Roderick, S.L.

Revision History  

• Version 1.0: 1995-12-07
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Source and taxonomy, Version format compliance
• Version 1.3: 2019-07-17
  Changes: Data collection, Other, Refinement description
• Version 1.4: 2019-08-14
  Changes: Data collection, Refinement description
• Version 1.5: 2024-02-14
  Changes: Data collection, Database references