Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction | Predict Membrane 

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 78.22 kDa 
• Atom Count: 5579 
• Modelled Residue Count: 702 
• Deposited Residue Count: 728 
• Unique protein chains: 1

1F0K

THE 1.9 ANGSTROM CRYSTAL STRUCTURE OF E. COLI MURG

• PDB DOI: 10.2210/pdb1F0K/pdb

• Classification: TRANSFERASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 
• Membrane Protein: Yes  OPM


• Deposited: 2000-05-16 Released: 2000-07-27 
• Deposition Author(s): Ha, S., Walker, D., Shi, Y., Walker, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.247 
• R-Value Work: 0.220 

Literature

The 1.9 A crystal structure of Escherichia coli MurG, a membrane-associated glycosyltransferase involved in peptidoglycan biosynthesis.

Ha, S., Walker, D., Shi, Y., Walker, S.

(2000) Protein Sci 9: 1045-1052

• PubMed: 10892798 
• DOI: 10.1110/ps.9.6.1045
• Primary Citation of Related Structures:  
  1F0K


• PubMed Abstract: 
  

The 1.9 A X-ray structure of a membrane-associated glycosyltransferase involved in peptidoglycan biosynthesis is reported. This enzyme, MurG, contains two alpha/beta open sheet domains separated by a deep cleft. Structural analysis suggests that the C-terminal domain contains the UDP-GlcNAc binding site while the N-terminal domain contains the acceptor binding site and likely membrane association site. Combined with sequence data from other MurG homologs, this structure provides insight into the residues that are important in substrate binding and catalysis. We have also noted that a conserved region found in many UDP-sugar transferases maps to a beta/alpha/beta/alpha supersecondary structural motif in the donor binding region of MurG, an observation that may be helpful in glycosyltransferase structure prediction. The identification of a conserved structural motif involved in donor binding in different UDP-sugar transferases also suggests that it may be possible to identify--and perhaps alter--the residues that help determine donor specificity.

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Organizational Affiliation: 

Department of Chemistry, Princeton University, New Jersey 08544, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
UDP-N-ACETYLGLUCOSAMINE-N-ACETYLMURAMYL-(PENTAPEPTIDE) PYROPHOSPHORYL-UNDECAPRENOL N-ACETYLGLUCOSAMINE TRANSFERASE	A, B	364	Escherichia coli	Mutation(s): 0  EC: 2.4.1 (PDB Primary Data), 2.4.1.227 (UniProt) Membrane Entity: Yes
UniProt
Find proteins for P17443 (Escherichia coli (strain K12)) Explore P17443  Go to UniProtKB:  P17443

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	C [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.247 
• R-Value Work: 0.220 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.613	α = 64.29
b = 66.356	β = 83.52
c = 67.902	γ = 65.45

Software Package:

Software Name	Purpose
MLPHARE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-05-16 
• Released Date: 2000-07-27 
Deposition Author(s): Ha, S., Walker, D., Shi, Y., Walker, S.

Revision History  

• Version 1.0: 2000-07-27
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance