6ETZ

Cold-adapted beta-D-galactosidase from Arthrobacter sp. 32cB

• PDB DOI: https://doi.org/10.2210/pdb6ETZ/pdb

• Classification: HYDROLASE
• Organism(s): Arthrobacter sp. 32cB
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2017-10-27 Released: 2018-01-10 
• Deposition Author(s): Rutkiewicz-Krotewicz, M., Bujacz, A., Bujacz, G.
• Funding Organization(s): National Science Centre

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.198 
• R-Value Work: 0.161 
• R-Value Observed: 0.162 

Starting Model: experimental

Literature

In Situ Random Microseeding and Streak Seeding Used for Growth of Crystals of Cold-Adapted Beta-D-Galactosidases: Crystal Structure of BetaDG from Arthrobacter sp. 32cB

Rutkiewicz-Krotewicz, M., Pietrzyk-Brzezinska, A.J., Wanarska, M., Cieslinski, H., Bujacz, A.

(2018) Crystals (Basel) 8

• DOI: https://doi.org/10.3390/cryst8010013

Biological Assembly 1  

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

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 108.13 kDa 
• Atom Count: 8,925 
• Modelled Residue Count: 989 
• Deposited Residue Count: 989 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-galactosidase	A	989	Arthrobacter sp. 32cB	Mutation(s): 0  EC: 3.2.1.23
UniProt
Find proteins for A0A023UGN9 (Arthrobacter sp. 32cB) Explore A0A023UGN9  Go to UniProtKB:  A0A023UGN9

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MLI	G [auth A]	MALONATE ION C3 H2 O4 OFOBLEOULBTSOW-UHFFFAOYSA-L
ACT	B [auth A], C [auth A], D [auth A], E [auth A]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M
NA	F [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.198 
• R-Value Work: 0.161 
• R-Value Observed: 0.162 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 137.784	α = 90
b = 137.784	β = 90
c = 127.208	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
XSCALE	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2018-01-10 
Deposition Author(s): Rutkiewicz-Krotewicz, M., Bujacz, A., Bujacz, G.

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Funding Organization	Location	Grant Number
National Science Centre	Poland	2016/21/B/ST5/00555

Revision History  

• Version 1.0: 2018-01-10
  Type: Initial release
  
• Version 1.1: 2019-07-03
  Changes: Data collection, Database references
• Version 1.2: 2019-07-31
  Changes: Data collection, Database references
• Version 1.3: 2024-01-17
  Changes: Data collection, Database references, Refinement description