1K2Y | pdb_00001k2y

Crystal Structure of Phosphomannomutase/Phosphoglucomutase S108A mutant from P. aeruginosa

• PDB DOI: https://doi.org/10.2210/pdb1K2Y/pdb

• Classification: ISOMERASE
• Organism(s): Pseudomonas aeruginosa
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2001-09-30 Released: 2002-02-13 
• Deposition Author(s): Regni, C., Tipton, P.A., Beamer, L.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 
  0.195 (Depositor) 
• R-Value Work: 
  0.168 (Depositor) 
• R-Value Observed: 
  0.170 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of PMM/PGM: an enzyme in the biosynthetic pathway of P. aeruginosa virulence factors.

Regni, C., Tipton, P.A., Beamer, L.J.

(2002) Structure 10: 269-279

• PubMed: 11839312 
• DOI: https://doi.org/10.1016/s0969-2126(02)00705-0
• Primary Citation Related Structures: 
  1K2Y, 1K35


• PubMed Abstract: 
  

  The enzyme phosphomannomutase/phosphoglucomutase (PMM/PGM) from P. aeruginosa is required for the biosynthesis of two bacterial exopolysaccharides: alginate and lipopolysaccharide (LPS). Both of these molecules play a role in the virulence of P. aeruginosa, an important human pathogen known for its ability to develop antibiotic resistance and cause chronic lung infections in cystic fibrosis patients. The crystal structure of PMM/PGM shows that the enzyme has four domains, three of which have a similar three-dimensional fold. Residues from all four domains of the protein contribute to the formation of a large active site cleft in the center of the molecule. Detailed information on the active site of PMM/PGM lays the foundation for structure-based inhibitor design. Inhibitors of sufficient potency and specificity should impair the biosynthesis of alginate and LPS, and may facilitate clearance of the bacteria by the host immune system and increase the efficacy of conventional antibiotic treatment against chronic P. aeruginosa infections.

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Organizational Affiliation: 
• Department of Biochemistry, 117 Schweitzer Hall, University of Missouri-Columbia, Columbia, MO 65211, USA.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 50.55 kDa 
• Atom Count: 3,873 
• Modeled Residue Count: 459 
• Deposited Residue Count: 463 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
phosphomannomutase	A [auth X]	463	Pseudomonas aeruginosa	Mutation(s): 1  Gene Names: AlgC EC: 5.4.2.8 (PDB Primary Data), 5.4.2.2 (UniProt)
UniProt
Find proteins for P26276 (Pseudomonas aeruginosa (strain ATCC 15692 / DSM 22644 / CIP 104116 / JCM 14847 / LMG 12228 / 1C / PRS 101 / PAO1)) Explore P26276  Go to UniProtKB:  P26276

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TLA	C [auth X]	L(+)-TARTARIC ACID C4 H6 O6 FEWJPZIEWOKRBE-JCYAYHJZSA-N
ZN	B [auth X]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free:  0.195 (Depositor) 
• R-Value Work:  0.168 (Depositor) 
• R-Value Observed: 0.170 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 71.064	α = 90
b = 71.306	β = 90
c = 96.586	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-02-13 
Deposition Author(s): Regni, C., Tipton, P.A., Beamer, L.J.

Revision History  

• Version 1.0: 2002-02-13
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-10-27
  Changes: Database references, Derived calculations
• Version 1.4: 2023-08-16
  Changes: Data collection, Refinement description