3G7M

Structure of the thaumatin-like xylanase inhibitor TLXI

• PDB DOI: https://doi.org/10.2210/pdb3G7M/pdb

• Classification: HYDROLASE INHIBITOR
• Organism(s): Triticum aestivum
• Expression System: Komagataella pastoris
• Mutation(s): Yes 


• Deposited: 2009-02-10 Released: 2010-03-16 
• Deposition Author(s): Vandermarliere, E., Courtin, C.M., Lammens, W., Schoepe, J., Strelkov, S.V.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.91 Å
• R-Value Free: 0.286 
• R-Value Work: 0.228 
• R-Value Observed: 0.239 

Starting Model: experimental

Literature

Crystal structure of the noncompetitive xylanase inhibitor TLXI, member of the small thaumatin-like protein family.

Vandermarliere, E., Lammens, W., Schoepe, J., Rombouts, S., Fierens, E., Gebruers, K., Volckaert, G., Rabijns, A., Delcour, J.A., Strelkov, S.V., Courtin, C.M.

(2010) Proteins 78: 2391-2394

• PubMed: 20544973 
• DOI: https://doi.org/10.1002/prot.22737
• Primary Citation of Related Structures:  
  3G7M

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Organizational Affiliation: 

Department of Pharmaceutical Sciences, Laboratory for Biocrystallography, Leuven 3000, Belgium.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

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

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 15.69 kDa 
• Atom Count: 1,126 
• Modelled Residue Count: 151 
• Deposited Residue Count: 151 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Xylanase inhibitor TL-XI	A	151	Triticum aestivum	Mutation(s): 4  Gene Names: tlxi
UniProt
Find proteins for Q0WX48 (Triticum aestivum) Explore Q0WX48  Go to UniProtKB:  Q0WX48

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	C [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
NA	B [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.91 Å
• R-Value Free: 0.286 
• R-Value Work: 0.228 
• R-Value Observed: 0.239 
• Space Group: P 3 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 104.019	α = 90
b = 104.019	β = 90
c = 30.047	γ = 120

Software Package:

Software Name	Purpose
MAR345dtb	data collection
PHASER	phasing
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2010-03-16 
Deposition Author(s): Vandermarliere, E., Courtin, C.M., Lammens, W., Schoepe, J., Strelkov, S.V.

Revision History  

• Version 1.0: 2010-03-16
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2011-07-27
  Changes: Database references
• Version 1.3: 2021-11-10
  Changes: Data collection, Database references, Derived calculations
• Version 1.4: 2023-11-01
  Changes: Data collection, Refinement description
• Version 1.5: 2024-10-30
  Changes: Structure summary