4TXT

Crystal Structure of a GH48 cellobiohydrolase from Caldicellulosiruptor bescii

• PDB DOI: https://doi.org/10.2210/pdb4TXT/pdb
• Entry: 4TXT supersedes: 4L0H

• Classification: HYDROLASE
• Organism(s): Caldicellulosiruptor bescii DSM 6725
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2014-07-07 Released: 2014-08-06 
• Deposition Author(s): An, J., Feng, Y.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.229 
• R-Value Work: 0.197 
• R-Value Observed: 0.199 

Literature

Crystallization and preliminary X-ray analysis of a processive cellobiohydrolase CbCBH48A from Caldicellulosiruptor bescii

An, J., Feng, Y., Bai, A.

To be published.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 75.96 kDa 
• Atom Count: 5,317 
• Modelled Residue Count: 627 
• Deposited Residue Count: 656 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glycoside hydrolase family 48	A	656	Caldicellulosiruptor bescii DSM 6725	Mutation(s): 0  Gene Names: Athe_1867 EC: 3.2.1.4
UniProt
Find proteins for B9MKU7 (Caldicellulosiruptor bescii (strain ATCC BAA-1888 / DSM 6725 / KCTC 15123 / Z-1320)) Explore B9MKU7  Go to UniProtKB:  B9MKU7

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-glucopyranose-(1-4)-beta-D-glucopyranose-(1-4)-beta-D-glucopyranose	B	3		N/A
Glycosylation Resources
GlyTouCan:  G14338VK GlyCosmos:  G14338VK GlyGen:  G14338VK

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BTB	M [auth A]	2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C8 H19 N O5 OWMVSZAMULFTJU-UHFFFAOYSA-N
EDO	C [auth A], D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900021	B	beta-cellotriose	Oligosaccharide / Metabolism

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.229 
• R-Value Work: 0.197 
• R-Value Observed: 0.199 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 116.348	α = 90
b = 57.348	β = 103.36
c = 105.598	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-08-06 
Deposition Author(s): An, J., Feng, Y.
• This entry supersedes: 4L0H

Revision History  

• Version 1.0: 2014-08-06
  Type: Initial release
  
• Version 1.1: 2015-02-04
  Changes: Derived calculations
• Version 2.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Source and taxonomy, Structure summary
• Version 2.1: 2024-03-20
  Changes: Data collection, Database references, Structure summary