3D3A

Crystal structure of a beta-galactosidase from Bacteroides thetaiotaomicron

• PDB DOI: https://doi.org/10.2210/pdb3D3A/pdb

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


• Deposited: 2008-05-09 Released: 2008-05-27 
• Deposition Author(s): Palani, K., Kumaran, D., Burley, S.K., Swaminathan, S., New York SGX Research Center for Structural Genomics (NYSGXRC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.254 
• R-Value Work: 0.214 
• R-Value Observed: 0.214 

Literature

Crystal structure of a beta-galactosidase from Bacteroides thetaiotaomicron.

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

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: 71.23 kDa 
• Atom Count: 5,257 
• Modelled Residue Count: 604 
• Deposited Residue Count: 612 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-galactosidase	A	612	Bacteroides thetaiotaomicron VPI-5482	Mutation(s): 0  Gene Names: BT_0290
UniProt
Find proteins for Q8AB22 (Bacteroides thetaiotaomicron (strain ATCC 29148 / DSM 2079 / JCM 5827 / CCUG 10774 / NCTC 10582 / VPI-5482 / E50)) Explore Q8AB22  Go to UniProtKB:  Q8AB22

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.15 Å
• R-Value Free: 0.254 
• R-Value Work: 0.214 
• R-Value Observed: 0.214 
• Space Group: P 4₃

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 117.017	α = 90
b = 117.017	β = 90
c = 59.711	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: 2008-05-27 
Deposition Author(s): Palani, K., Kumaran, D., Burley, S.K., Swaminathan, S., New York SGX Research Center for Structural Genomics (NYSGXRC)

Revision History  

• Version 1.0: 2008-05-27
  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: 2024-11-13
  Changes: Data collection, Database references, Structure summary