3VCY

Structure of MurA (UDP-N-acetylglucosamine enolpyruvyl transferase), from Vibrio fischeri in complex with substrate UDP-N-acetylglucosamine and the drug fosfomycin.

PDB DOI: https://doi.org/10.2210/pdb3VCY/pdb

Classification: TRANSFERASE/ANTIBIOTIC
Organism(s): Aliivibrio fischeri MJ11
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2012-01-04 Released: 2012-04-11
Deposition Author(s): Bensen, D.C., Rodriguez, S., Nix, J., Cunningham, M.L., Tari, L.W.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.93 Å
R-Value Free: 0.261
R-Value Work: 0.199
R-Value Observed: 0.202

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.3 of the entry. See complete history.

Literature

Structure of MurA (UDP-N-acetylglucosamine enolpyruvyl transferase) from Vibrio fischeri in complex with substrate UDP-N-acetylglucosamine and the drug fosfomycin.

Bensen, D.C., Rodriguez, S., Nix, J., Cunningham, M.L., Tari, L.W.

(2012) Acta Crystallogr Sect F Struct Biol Cryst Commun 68: 382-385

PubMed: 22505403 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.1107/S1744309112006720
Primary Citation of Related Structures:
3VCY

PubMed Abstract:
The development of new antibiotics is necessitated by the rapid development of resistance to current therapies. UDP-N-acetylglucosamine enolpyruvyl transferase (MurA), which catalyzes the first committed step of bacterial peptidoglycan biosynthesis, is a prime candidate for therapeutic intervention. MurA is the target of the antibiotic fosfomycin, a natural product produced by Streptomyces. Despite possessing a high degree of sequence conservation with MurA enzymes from fosfomycin-susceptible organisms, recent microbiological studies suggest that MurA from Vibrio fischeri (VfiMurA) may confer fosfomycin resistance via a mechanism that is not yet understood. The crystal structure of VfiMurA in a ternary complex with the substrate UDP-N-acetylglucosamine (UNAG) and fosfomycin has been solved to a resolution of 1.93 Å. Fosfomycin is known to inhibit MurA by covalently binding to a highly conserved cysteine in the active site of the enzyme. A comparison of the title structure with the structure of fosfomycin-susceptible Haemophilus influenzae MurA (PDB entry 2rl2) revealed strikingly similar conformations of the mobile substrate-binding loop and clear electron density for a fosfomycin-cysteine adduct. Based on these results, there are no distinguishing sequence/structural features in VfiMurA that would translate to a diminished sensitivity to fosfomycin. However, VfiMurA is a robust crystallizer and shares high sequence identity with many clinically relevant bacterial pathogens. Thus, it would serve as an ideal system for use in the structure-guided optimization of new antibacterial agents.

Organizational Affiliation

Structural Biology, Trius Therapeutics, 6310 Nancy Ridge Drive, Suite 101, San Diego, CA 92008, USA.

Macromolecule Content

Total Structure Weight: 186.94 kDa
Atom Count: 13,938
Modelled Residue Count: 1,676
Deposited Residue Count: 1,720
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
UDP-N-acetylglucosamine 1-carboxyvinyltransferase	A, B, C, D	430	Aliivibrio fischeri MJ11	Mutation(s): 0 Gene Names: murA, VFMJ11_0391 EC: 2.5.1.7
UniProt
Find proteins for B5F9P4 (Aliivibrio fischeri (strain MJ11)) Explore B5F9P4 Go to UniProtKB: B5F9P4
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	B5F9P4
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
UD1 Query on UD1 Download Ideal Coordinates CCD File SDF format, chain F [auth A] SDF format, chain I [auth B] SDF format, chain M [auth C] SDF format, chain Q [auth D] MOL2 format, chain F [auth A] MOL2 format, chain I [auth B] MOL2 format, chain M [auth C] MOL2 format, chain Q [auth D] mmCIF format, chain F [auth A] mmCIF format, chain I [auth B] mmCIF format, chain M [auth C] mmCIF format, chain Q [auth D]	F [auth A], I [auth B], M [auth C], Q [auth D]	URIDINE-DIPHOSPHATE-N-ACETYLGLUCOSAMINE C₁₇ H₂₇ N₃ O₁₇ P₂ LFTYTUAZOPRMMI-CFRASDGPSA-N		Interactions Focus chain F [auth A] Focus chain I [auth B] Focus chain M [auth C] Focus chain Q [auth D] Interactions & Density Focus chain F [auth A] Focus chain I [auth B] Focus chain M [auth C] Focus chain Q [auth D]
FFQ Query on FFQ Download Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain J [auth B] SDF format, chain O [auth C] SDF format, chain T [auth D] MOL2 format, chain E [auth A] MOL2 format, chain J [auth B] MOL2 format, chain O [auth C] MOL2 format, chain T [auth D] mmCIF format, chain E [auth A] mmCIF format, chain J [auth B] mmCIF format, chain O [auth C] mmCIF format, chain T [auth D]	E [auth A], J [auth B], O [auth C], T [auth D]	[(1R)-1-hydroxypropyl]phosphonic acid C₃ H₉ O₄ P MVIJUJBSAAUHEM-GSVOUGTGSA-N		Interactions Focus chain E [auth A] Focus chain J [auth B] Focus chain O [auth C] Focus chain T [auth D] Interactions & Density Focus chain E [auth A] Focus chain J [auth B] Focus chain O [auth C] Focus chain T [auth D]
PO4 Query on PO4 Download Ideal Coordinates CCD File SDF format, chain R [auth D] SDF format, chain G [auth A] SDF format, chain K [auth B] SDF format, chain N [auth C] MOL2 format, chain R [auth D] MOL2 format, chain G [auth A] MOL2 format, chain K [auth B] MOL2 format, chain N [auth C] mmCIF format, chain R [auth D] mmCIF format, chain G [auth A] mmCIF format, chain K [auth B] mmCIF format, chain N [auth C]	G [auth A], K [auth B], N [auth C], R [auth D]	PHOSPHATE ION O₄ P NBIIXXVUZAFLBC-UHFFFAOYSA-K		Interactions Focus chain G [auth A] Focus chain K [auth B] Focus chain N [auth C] Focus chain R [auth D] Interactions & Density Focus chain G [auth A] Focus chain K [auth B] Focus chain N [auth C] Focus chain R [auth D]
GOL Query on GOL Download Ideal Coordinates CCD File SDF format, chain P [auth C] SDF format, chain H [auth A] SDF format, chain L [auth B] SDF format, chain S [auth D] MOL2 format, chain P [auth C] MOL2 format, chain H [auth A] MOL2 format, chain L [auth B] MOL2 format, chain S [auth D] mmCIF format, chain P [auth C] mmCIF format, chain H [auth A] mmCIF format, chain L [auth B] mmCIF format, chain S [auth D]	H [auth A], L [auth B], P [auth C], S [auth D]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain H [auth A] Focus chain L [auth B] Focus chain P [auth C] Focus chain S [auth D] Interactions & Density Focus chain H [auth A] Focus chain L [auth B] Focus chain P [auth C] Focus chain S [auth D]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.93 Å
R-Value Free: 0.261
R-Value Work: 0.199
R-Value Observed: 0.202
Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 86.6	α = 90
b = 118.51	β = 116.48
c = 92.51	γ = 90

Software Package:

Software Name	Purpose
CrystalClear	data collection
PHASER	phasing
REFMAC	refinement
CrystalClear	data reduction
SCALA	data scaling

Structure Validation

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Ligand Structure Quality Assessment

Entry History

Deposition Data

Released Date: 2012-04-11

Deposition Author(s):

Revision History (Full details and data files)

Version 1.0: 2012-04-11
Type: Initial release
Version 1.1: 2012-04-25
Changes: Database references
Version 1.2: 2023-09-13
Changes: Data collection, Database references, Derived calculations, Refinement description
Version 1.3: 2024-10-30
Changes: Structure summary