Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 36.87 kDa 
• Atom Count: 2908 
• Residue Count: 349 
• Unique protein chains: 1

1HG8

Endopolygalacturonase from the phytopathogenic fungus Fusarium moniliforme

• DOI: 10.2210/pdb1HG8/pdb

• Classification: HYDROLASE
• Organism(s): Fusarium verticillioides
• Expression System: Saccharomyces cerevisiae
• Mutation(s): No 


• Deposited: 2000-12-13 Released: 2001-11-10 
• Deposition Author(s): Federici, L., Caprari, C., Mattei, B., Savino, C., De Lorenzo, G., Cervone, F., Tsernoglou, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.73 Å
• R-Value Free: 0.203 
• R-Value Work: 0.173 

Literature

Structural Requirements of Endopolygalacturonase for the Interaction with Pgip (Polygalacturonase-Inhibiting Protein)

Federici, L., Caprari, C., Mattei, B., Savino, C., Di Matteo, A., De Lorenzo, G., Cervone, F., Tsernoglou, D.

(2001) Proc Natl Acad Sci U S A 98: 13425

• PubMed: 11687632 
• DOI: 10.1073/pnas.231473698
• Primary Citation of Related Structures:  
  1HG8


• PubMed Abstract: 
  

To invade a plant tissue, phytopathogenic fungi produce several cell wall-degrading enzymes; among them, endopolygalacturonase (PG) catalyzes the fragmentation and solubilization of homogalacturonan. Polygalacturonase-inhibiting proteins (PGIPs), found in the cell wall of many plants, counteract fungal PGs by forming specific complexes with them. We report the crystal structure at 1.73 A resolution of PG from the phytopathogenic fungus Fusarium moniliforme (FmPG). The structure of FmPG was useful to study the mode of interaction of the enzyme with PGIP-2 from Phaseolus vulgaris. Several amino acids of FmPG were mutated, and their contribution to the formation of the complex with PGIP-2 was investigated by surface plasmon resonance. The residues Lys-269 and Arg-267, located inside the active site cleft, and His-188, at the edge of the active site cleft, are critical for the formation of the complex, which is consistent with the observed competitive inhibition of the enzyme played by PGIP-2. The replacement of His-188 with a proline or the insertion of a tryptophan after position 270, variations that both occur in plant PGs, interferes with the formation of the complex. We suggest that these variations are important structural requirements of plant PGs to prevent PGIP binding.

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Related Citations: 

• Crystallization and Preliminary X-Ray Diffraction Study of the Endo-Polygalacturonase from Fusarium Moniliforme.
  Federici, L., Mattei, B., Caprari, C., Savino, C., Cervone, F., Tsernoglou, D.
  (1999) Acta Crystallogr D Biol Crystallogr 55: 1359

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Organizational Affiliation: 

Dipartimento di Scienze Biochimiche, Università di Roma La Sapienza, Piazzale le Aldo Moro 5, 00185 Rome, Italy.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ENDOPOLYGALACTURONASE	A	349	Fusarium verticillioides	Mutation(s): 0  EC: 3.2.1.15
Find proteins for Q07181 (Gibberella fujikuroi) Explore Q07181  Go to UniProtKB:  Q07181

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Chain Length	2D Diagram	Glycosylation
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	B	2		N-Glycosylation

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	A	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.73 Å
• R-Value Free: 0.203 
• R-Value Work: 0.173 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 58.26	α = 90
b = 61.59	β = 90
c = 98.86	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
SHELX	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-12-13 
• Released Date: 2001-11-10 
Deposition Author(s): Federici, L., Caprari, C., Mattei, B., Savino, C., De Lorenzo, G., Cervone, F., Tsernoglou, D.

Revision History 

• Version 1.0: 2001-11-10
  Type: Initial release
  
• Version 1.1: 2014-02-19
  Changes: Database references, Derived calculations, Other, Version format compliance
• Version 1.2: 2019-05-22
  Changes: Data collection, Derived calculations, Other, Refinement description
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary