Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 3-mer - A3 

Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 3-mer - A3 

Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 

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

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 6-mer - A6 

Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 Local Symmetry: Dihedral - D2  (3D View)
Local Stoichiometry: Homo 4-mer - A4 

Biological assembly 3 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 317.63 kDa 
• Atom Count: 21,740 
• Modelled Residue Count: 2,683 
• Deposited Residue Count: 2,768 
• Unique protein chains: 1

 3FN9

Crystal structure of putative beta-galactosidase from bacteroides fragilis

• PDB DOI:  https://doi.org/10.2210/pdb3FN9/pdb

• Classification: HYDROLASE
• Organism(s): Bacteroides fragilis NCTC 9343
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2008-12-23 Released: 2009-01-13 
• Deposition Author(s): Ramagopal, U.A., Toro, R., Burley, S.K., Almo, S.C., New York SGX Research Center for Structural Genomics (NYSGXRC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.270 
• R-Value Work: 0.201 
• R-Value Observed: 0.204 

Literature

Structure of putative beta-galactosidase from bacteroides fragilis

Ramagopal, U.A., Toro, R., Burley, S.K., Almo, S.C.

To be published.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Putative beta-galactosidase	A, B, C, D	692	Bacteroides fragilis NCTC 9343	Mutation(s): 0  Gene Names: BF0029, lacZ_2, BF9343_0029, NCTC9343_01681 EC: 3.2.1.23
UniProt
Find proteins for Q5LJ68 (Bacteroides fragilis (strain ATCC 25285 / DSM 2151 / CCUG 4856 / JCM 11019 / NCTC 9343 / Onslow)) Explore Q5LJ68  Go to UniProtKB:  Q5LJ68

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	E [auth A], F [auth A], G [auth A], H [auth C], I [auth D], J [auth D], K [auth D]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.70 Å
• R-Value Free: 0.270 
• R-Value Work: 0.201 
• R-Value Observed: 0.204 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 109.453	α = 90
b = 133.066	β = 90
c = 221.192	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction
CBASS	data collection
HKL-2000	data reduction
SHELXD	phasing
PHENIX	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-01-13 
Deposition Author(s): Ramagopal, U.A., Toro, R., Burley, S.K., Almo, S.C., New York SGX Research Center for Structural Genomics (NYSGXRC)

Revision History  

• Version 1.0: 2009-01-13
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Source and taxonomy, Version format compliance
• Version 1.2: 2017-11-01
  Changes: Refinement description
• Version 1.3: 2021-02-10
  Changes: Database references, Derived calculations, Structure summary