1TA3

Crystal Structure of xylanase (GH10) in complex with inhibitor (XIP)

• PDB DOI: https://doi.org/10.2210/pdb1TA3/pdb

• Classification: HYDROLASE INHIBITOR/HYDROLASE
• Organism(s): Triticum aestivum, Aspergillus nidulans
• Expression System: Aspergillus nidulans
• Mutation(s): No 


• Deposited: 2004-05-19 Released: 2004-07-20 
• Deposition Author(s): Payan, F., Leone, P., Furniss, C., Tahir, T., Durand, A., Porciero, S., Manzanares, P., Williamson, G., Gilbert, H.J., Juge, N., Roussel, A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.166 
• R-Value Work: 0.133 
• R-Value Observed: 0.135 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 64.26 kDa 
• Atom Count: 5,302 
• Modelled Residue Count: 575 
• Deposited Residue Count: 577 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
xylanase inhibitor protein I	A	274	Triticum aestivum	Mutation(s): 0
UniProt
Find proteins for Q8L5C6 (Triticum aestivum) Explore Q8L5C6  Go to UniProtKB:  Q8L5C6

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Endo-1,4-beta-xylanase	B	303	Aspergillus nidulans	Mutation(s): 0  Gene Names: XLNC EC: 3.2.1.8
UniProt
Find proteins for Q00177 (Emericella nidulans (strain FGSC A4 / ATCC 38163 / CBS 112.46 / NRRL 194 / M139)) Explore Q00177  Go to UniProtKB:  Q00177

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	C [auth A], D [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
EDO	E [auth A], F [auth B], G [auth B], H [auth B], I [auth B], J [auth B], K [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.166 
• R-Value Work: 0.133 
• R-Value Observed: 0.135 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 46.73	α = 90
b = 75.872	β = 90
c = 159.654	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-07-20 
Deposition Author(s): Payan, F., Leone, P., Furniss, C., Tahir, T., Durand, A., Porciero, S., Manzanares, P., Williamson, G., Gilbert, H.J., Juge, N., Roussel, A.

Revision History  

• Version 1.0: 2004-07-20
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.3: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary