4Z4L

Crystal Structure of cellobiose 2-epimerase from Caldicellulosiruptor saccharolyticus DSM 8903

• PDB DOI: https://doi.org/10.2210/pdb4Z4L/pdb

• Classification: ISOMERASE
• Organism(s): Caldicellulosiruptor saccharolyticus DSM 8903
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2015-04-02 Released: 2016-04-13 
• Deposition Author(s): Shen, Q.Y., Zhang, Y.Z.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.67 Å
• R-Value Free: 0.198 
• R-Value Work: 0.163 
• R-Value Observed: 0.165 

Starting Model: experimental

Literature

Crystal Structure of cellobiose 2-epimerase from Caldicellulosiruptor saccharolyticus DSM 8903

Shen, Q.Y., Zhang, Y.Z.

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: 47.75 kDa 
• Atom Count: 3,432 
• Modelled Residue Count: 392 
• Deposited Residue Count: 402 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cellobiose 2-epimerase	A	402	Caldicellulosiruptor saccharolyticus DSM 8903	Mutation(s): 5  Gene Names: Csac_0294 EC: 5.1.3.11
UniProt
Find proteins for A4XGA6 (Caldicellulosiruptor saccharolyticus (strain ATCC 43494 / DSM 8903 / Tp8T 6331)) Explore A4XGA6  Go to UniProtKB:  A4XGA6

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO	B [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.67 Å
• R-Value Free: 0.198 
• R-Value Work: 0.163 
• R-Value Observed: 0.165 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 55.787	α = 90
b = 75.543	β = 90
c = 91.382	γ = 90

Software Package:

Software Name	Purpose
Aimless	data scaling
PHENIX	refinement
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-04-13 
Deposition Author(s): Shen, Q.Y., Zhang, Y.Z.

Revision History  

• Version 1.0: 2016-04-13
  Type: Initial release
  
• Version 1.1: 2023-09-27
  Changes: Data collection, Database references, Derived calculations, Refinement description