3BGA | pdb_00003bga

Crystal structure of beta-galactosidase from Bacteroides thetaiotaomicron VPI-5482

• PDB DOI: https://doi.org/10.2210/pdb3BGA/pdb

• Classification: HYDROLASE
• Organism(s): Bacteroides thetaiotaomicron VPI-5482
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2007-11-26 Released: 2007-12-11 
• Deposition Author(s): Kumaran, D., Burley, S.K., Swaminathan, S., New York SGX Research Center for Structural Genomics (NYSGXRC)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 
  0.234 (Depositor), 0.230 (DCC) 
• R-Value Work: 
  0.200 (Depositor), 0.200 (DCC) 
• R-Value Observed: 
  0.200 (Depositor) 

Literature

Crystal structure analysis of beta-galactosidase from Bacteroides thetaiotaomicron VPI-5482.

Kumaran, D., Burley, S.K., Swaminathan, S.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 232.59 kDa 
• Atom Count: 17,243 
• Modeled Residue Count: 2,003 
• Deposited Residue Count: 2,020 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-galactosidase	A, B	1,010	Bacteroides thetaiotaomicron VPI-5482	Mutation(s): 0  Gene Names: NP_810539.1, BT_1626 EC: 3.2.1.23
UniProt
Find proteins for Q8A799 (Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / JCM 5827 / CCUG 10774 / NCTC 10582 / VPI-5482 / E50)) Explore Q8A799  Go to UniProtKB:  Q8A799

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	F [auth A], J [auth B]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG	C [auth A], G [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N
NA	D [auth A], E [auth A], H [auth B], I [auth B]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A, B	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free:  0.234 (Depositor), 0.230 (DCC) 
• R-Value Work:  0.200 (Depositor), 0.200 (DCC) 
• R-Value Observed: 0.200 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 88.335	α = 90
b = 138.864	β = 109.73
c = 102.818	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
CBASS	data collection
HKL-2000	data reduction
HKL-2000	data scaling
SHELXD	phasing
SHARP	phasing
ARP/wARP	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2007-12-11 
Deposition Author(s): Kumaran, D., Burley, S.K., Swaminathan, S., New York SGX Research Center for Structural Genomics (NYSGXRC)

Revision History  

• Version 1.0: 2007-12-11
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2021-02-03
  Changes: Database references, Derived calculations, Structure summary
• Version 1.3: 2024-10-30
  Changes: Data collection, Database references, Structure summary