8BAL

Niako3494, a bacterial protein structure in glycoside hydrolase family 20

• PDB DOI: https://doi.org/10.2210/pdb8BAL/pdb

• Classification: HYDROLASE
• Organism(s): Niastella koreensis GR20-10
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2022-10-11 Released: 2023-01-11 
• Deposition Author(s): Dong, M.D., Roth, C.R., Jin, Y.J.
• Funding Organization(s): Wellcome Trust, Royal Society

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.27 Å
• R-Value Free: 0.356 
• R-Value Work: 0.283 

Literature

Mechanistic and Structural Insights into the Specificity and Biological Functions of Bacterial Sulfoglycosidases

Zhang, Z., Dong, M., Zallot, R., Blackburn, G.M., Wang, N., Wang, C., Chen, L., Baumann, P., Wu, Z., Wang, Z., Fan, H., Roth, C., Jin, Y., He, Y.

(2022) ACS Catal 

• DOI: https://doi.org/10.1021/acscatal.2c05405

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors.

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 4 assigned by authors.

Biological Assembly 5  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 5 assigned by authors.

Macromolecule Content

• Total Structure Weight: 218.04 kDa 
• Atom Count: 13,749 
• Modelled Residue Count: 1,701 
• Deposited Residue Count: 1,900 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Beta-N-acetylhexosaminidase	A, B [auth C], C [auth D], D [auth E], E [auth F]	380	Niastella koreensis GR20-10	Mutation(s): 0  Gene Names: Niako_3494 EC: 3.2.1.52
UniProt
Find proteins for G8TKW6 (Niastella koreensis (strain DSM 17620 / KACC 11465 / NBRC 106392 / GR20-10)) Explore G8TKW6  Go to UniProtKB:  G8TKW6

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN (Subject of Investigation/LOI)	F [auth A], G [auth C], H [auth D], I [auth E], J [auth F]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.27 Å
• R-Value Free: 0.356 
• R-Value Work: 0.283 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 146.987	α = 90
b = 254.589	β = 90
c = 139.58	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data reduction
xia2	data scaling
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-01-11 
Deposition Author(s): Dong, M.D., Roth, C.R., Jin, Y.J.

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Funding Organization	Location	Grant Number
Wellcome Trust	United Kingdom	218568/Z/19/Z
Royal Society	United Kingdom	RG170406
Wellcome Trust	United Kingdom	209057/Z/17/Z

Revision History  

• Version 1.0: 2023-01-11
  Type: Initial release
  
• Version 1.1: 2024-05-01
  Changes: Data collection, Refinement description