1UXX

CBM6ct from Clostridium thermocellum in complex with xylopentaose

• PDB DOI: https://doi.org/10.2210/pdb1UXX/pdb

• Classification: CARBOHYDRATE BINDING MODULE
• Organism(s): Acetivibrio thermocellus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2004-03-01 Released: 2004-03-11 
• Deposition Author(s): Czjzek, M., Pires, V.M.R., Henshaw, J., Prates, J.A.M., Henrissat, D.B.B., Gilbert, H.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.222 
• R-Value Work: 0.180 
• R-Value Observed: 0.182 

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 14.83 kDa 
• Atom Count: 1,086 
• Modelled Residue Count: 125 
• Deposited Residue Count: 133 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
XYLANASE U	A [auth X]	133	Acetivibrio thermocellus	Mutation(s): 0  EC: 3.2.1.8
UniProt
Find proteins for O52780 (Acetivibrio thermocellus) Explore O52780  Go to UniProtKB:  O52780

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-xylopyranose-(1-4)-beta-D-xylopyranose-(1-4)-beta-D-xylopyranose-(1-4)-beta-D-xylopyranose-(1-4)-beta-D-xylopyranose	B [auth A]	5		N/A
Glycosylation Resources
GlyTouCan:  G47101GE GlyCosmos:  G47101GE

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	C [auth X]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.222 
• R-Value Work: 0.180 
• R-Value Observed: 0.182 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 27.48	α = 90
b = 51.68	β = 102.78
c = 36.13	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-03-11 
Deposition Author(s): Czjzek, M., Pires, V.M.R., Henshaw, J., Prates, J.A.M., Henrissat, D.B.B., Gilbert, H.J.

Revision History  

• Version 1.0: 2004-03-11
  Type: Initial release
  
• Version 1.1: 2011-05-07
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Other, Structure summary
• Version 2.1: 2023-12-13
  Changes: Data collection, Database references, Derived calculations, Refinement description, Structure summary