Biological Assembly 1  

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

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Macromolecule Content

• Total Structure Weight: 30.09 kDa 
• Atom Count: 2105 
• Modelled Residue Count: 210 
• Deposited Residue Count: 210 
• Unique protein chains: 1

6FTB

Staphylococcus aureus monofunctional glycosyltransferase in complex with moenomycin

• PDB DOI: 10.2210/pdb6FTB/pdb

• Classification: TRANSFERASE
• Organism(s): Staphylococcus aureus MW2
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2018-02-20 Released: 2018-06-27 
• Deposition Author(s): Punekar, A.S., Dowson, C.J., Roper, D.I.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.237 
• R-Value Work: 0.197 
• R-Value Observed: 0.199 

Literature

The role of the jaw subdomain of peptidoglycan glycosyltransferases for lipid II polymerization.

Punekar, A.S., Samsudin, F., Lloyd, A.J., Dowson, C.G., Scott, D.J., Khalid, S., Roper, D.I.

(2018) Cell Surf 2: 54-66

• PubMed: 30046666 
• DOI: 10.1016/j.tcsw.2018.06.002
• Primary Citation of Related Structures:  
  6FTB


• PubMed Abstract: 
  

Bacterial peptidoglycan glycosyltransferases (PGT) catalyse the essential polymerization of lipid II into linear glycan chains required for peptidoglycan biosynthesis. The PGT domain is composed of a large head subdomain and a smaller jaw subdomain and can be potently inhibited by the antibiotic moenomycin A (MoeA). We present an X-ray structure of the MoeA-bound Staphylococcus aureus monofunctional PGT enzyme, revealing electron density for a second MoeA bound to the jaw subdomain as well as the PGT donor site. Isothermal titration calorimetry confirms two drug-binding sites with markedly different affinities and positive cooperativity. Hydrophobic cluster analysis suggests that the membrane-interacting surface of the jaw subdomain has structural and physicochemical properties similar to amphipathic cationic $\alpha$ -helical antimicrobial peptides for lipid II recognition and binding. Furthermore, molecular dynamics simulations of the drug-free and -bound forms of the enzyme demonstrate the importance of the jaw subdomain movement for lipid II selection and polymerization process and provide molecular-level insights into the mechanism of peptidoglycan biosynthesis by PGTs.

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Related Citations: 

• Characterization of the active site of S. aureus monofunctional glycosyltransferase (Mtg) by site-directed mutation and structural analysis of the protein complexed with moenomycin.
  Heaslet, H., Shaw, B., Mistry, A., Miller, A.A.
  (2009) J Struct Biol 167: 129

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Organizational Affiliation: 

School of Life Sciences, University of Warwick, Coventry CV4 7AL, United Kingdom.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Monofunctional glycosyltransferase	A	210	Staphylococcus aureus MW2	Mutation(s): 0  Gene Names: mgt, MW1814 EC: 2.4.1.129
UniProt
Find proteins for Q7A0I6 (Staphylococcus aureus (strain MW2)) Explore Q7A0I6  Go to UniProtKB:  Q7A0I6

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
M0E	B [auth A], C [auth A], D [auth A]	MOENOMYCIN C69 H106 N5 O34 P NXPRJQIAIORCGO-ZLPAOQQDSA-N
1QW	O [auth A]	(2R)-2,3-dihydroxypropyl dodecanoate C15 H30 O4 ARIWANIATODDMH-CQSZACIVSA-N
PO4	M [auth A], N [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
EDO	E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.237 
• R-Value Work: 0.197 
• R-Value Observed: 0.199 
• Space Group: H 3 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 114.422	α = 90
b = 114.422	β = 90
c = 128.844	γ = 120

Software Package:

Software Name	Purpose
BUSTER	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2018-02-20 
• Released Date: 2018-06-27 
Deposition Author(s): Punekar, A.S., Dowson, C.J., Roper, D.I.

Revision History  

• Version 1.0: 2018-06-27
  Type: Initial release
  
• Version 1.1: 2018-08-08
  Changes: Data collection, Database references