3AZR

Diverse Substrates Recognition Mechanism Revealed by Thermotoga maritima Cel5A Structures in Complex with Cellobiose

• PDB DOI: https://doi.org/10.2210/pdb3AZR/pdb

• Classification: HYDROLASE
• Organism(s): Thermotoga maritima MSB8
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2011-05-30 Released: 2011-08-10 
• Deposition Author(s): Wu, T.H., Huang, C.H., Ko, T.P., Lai, H.L., Ma, Y., Chen, C.C., Cheng, Y.S., Liu, J.R., Guo, R.T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.71 Å
• R-Value Free: 0.246 
• R-Value Work: 0.201 

Biological Assembly 1  

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

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

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 75.81 kDa 
• Atom Count: 5,852 
• Modelled Residue Count: 619 
• Deposited Residue Count: 634 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Endoglucanase	A, B	317	Thermotoga maritima MSB8	Mutation(s): 1  Gene Names: TM_1751 EC: 3.2.1.4
UniProt
Find proteins for Q9X273 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8)) Explore Q9X273  Go to UniProtKB:  Q9X273

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-glucopyranose-(1-4)-alpha-D-glucopyranose	C, D	2		N/A
Glycosylation Resources
GlyTouCan:  G86802XL GlyCosmos:  G86802XL

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BGC	E [auth A], F [auth B]	beta-D-glucopyranose C6 H12 O6 WQZGKKKJIJFFOK-VFUOTHLCSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900023	C, D	alpha-cellobiose	Oligosaccharide / Metabolism

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.71 Å
• R-Value Free: 0.246 
• R-Value Work: 0.201 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62.424	α = 90
b = 77.145	β = 97.5
c = 62.62	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2011-08-10 
Deposition Author(s): Wu, T.H., Huang, C.H., Ko, T.P., Lai, H.L., Ma, Y., Chen, C.C., Cheng, Y.S., Liu, J.R., Guo, R.T.

Revision History  

• Version 1.0: 2011-08-10
  Type: Initial release
  
• Version 1.1: 2013-06-05
  Changes: Database references
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Structure summary
• Version 2.1: 2024-03-13
  Changes: Data collection, Database references, Structure summary