2OI6

E. coli GlmU- Complex with UDP-GlcNAc, CoA and GlcN-1-PO4


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.178 

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Ligand Structure Quality Assessment 


This is version 2.0 of the entry. See complete history


Literature

Structure of the E. coli bifunctional GlmU acetyltransferase active site with substrates and products.

Olsen, L.R.Vetting, M.W.Roderick, S.L.

(2007) Protein Sci 16: 1230-1235

  • DOI: 10.1110/ps.072779707
  • Primary Citation of Related Structures:  
    2OI5, 2OI6, 2OI7

  • PubMed Abstract: 
  • The biosynthesis of UDP-GlcNAc in bacteria is carried out by GlmU, an essential bifunctional uridyltransferase that catalyzes the CoA-dependent acetylation of GlcN-1-PO(4) to form GlcNAc-1-PO(4) and its subsequent condensation with UTP to form pyrophosphate and UDP-GlcNAc ...

    The biosynthesis of UDP-GlcNAc in bacteria is carried out by GlmU, an essential bifunctional uridyltransferase that catalyzes the CoA-dependent acetylation of GlcN-1-PO(4) to form GlcNAc-1-PO(4) and its subsequent condensation with UTP to form pyrophosphate and UDP-GlcNAc. As a metabolite, UDP-GlcNAc is situated at a branch point leading to the biosynthesis of lipopolysaccharide and peptidoglycan. Consequently, GlmU is regarded as an important target for potential antibacterial agents. The crystal structure of the Escherichia coli GlmU acetyltransferase active site has been determined in complexes with acetyl-CoA, CoA/GlcN-1-PO(4), and desulpho-CoA/GlcNAc-1-PO(4). These structures reveal the enzyme groups responsible for binding the substrates. A superposition of these complex structures suggests that the 2-amino group of GlcN-1-PO(4) is positioned in proximity to the acetyl-CoA to facilitate direct attack on its thioester by a ternary complex mechanism.


    Organizational Affiliation

    Department of Biochemistry, Albert Einstein College of Medicine, Bronx, New York 10461, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bifunctional protein glmUA, B456Escherichia coliMutation(s): 0 
Gene Names: glmU
EC: 2.7.7.23 (PDB Primary Data), 2.3.1.157 (PDB Primary Data)
UniProt
Find proteins for P0ACC7 (Escherichia coli (strain K12))
Explore P0ACC7 
Go to UniProtKB:  P0ACC7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0ACC7
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
COA
Query on COA

Download Ideal Coordinates CCD File 
F [auth A],
M [auth B]
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
 Ligand Interaction
UD1
Query on UD1

Download Ideal Coordinates CCD File 
G [auth A],
N [auth B]
URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE
C17 H27 N3 O17 P2
LFTYTUAZOPRMMI-CFRASDGPSA-N
 Ligand Interaction
GP1
Query on GP1

Download Ideal Coordinates CCD File 
C [auth A],
H [auth B]
2-amino-2-deoxy-1-O-phosphono-alpha-D-glucopyranose
C6 H14 N O8 P
YMJBYRVFGYXULK-QZABAPFNSA-N
 Ligand Interaction
SO4
Query on SO4

Download Ideal Coordinates CCD File 
L [auth B]SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CO
Query on CO

Download Ideal Coordinates CCD File 
D [auth A],
K [auth B]
COBALT (II) ION
Co
XLJKHNWPARRRJB-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

Download Ideal Coordinates CCD File 
E [auth A],
I [auth B],
J [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.178 
  • R-Value Observed: 0.178 
  • Space Group: H 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.76α = 90
b = 102.76β = 90
c = 644.828γ = 120
Software Package:
Software NamePurpose
CNSrefinement
MAR345dtbdata collection
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-06-19
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary