8XVQ | pdb_00008xvq

Crystal structure of inulosucrase from Lactobacillus reuteri 121 in complex with fructose

• PDB DOI: https://doi.org/10.2210/pdb8XVQ/pdb

• Classification: HYDROLASE
• Organism(s): Limosilactobacillus reuteri
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
• Mutation(s): No 


• Deposited: 2024-01-15 Released: 2025-01-22 
• Deposition Author(s): Ni, D., Hou, X., Cheng, M., Xu, W., Rao, Y., Mu, W.
• Funding Organization(s): Other private, National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.14 Å
• R-Value Free: 
  0.227 (Depositor), 0.230 (DCC) 
• R-Value Work: 
  0.178 (Depositor), 0.186 (DCC) 
• R-Value Observed: 
  0.180 (Depositor) 

Starting Model: experimental

Literature

Structure-guided tunnel engineering to reveal the molecular basis of sugar chain extension of inulosucrase

Ni, D., Hou, X., Cheng, M., Xu, W., Rao, Y., Mu, W.

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)

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

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

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

Macromolecule Content 

• Total Structure Weight: 174.07 kDa 
• Atom Count: 8,483 
• Modeled Residue Count: 1,036 
• Deposited Residue Count: 1,596 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Inulosucrase	A, B	798	Limosilactobacillus reuteri	Mutation(s): 0  Gene Names: inu, DPH67_05265 EC: 2.4.1.9
UniProt
Find proteins for Q8GP32 (Limosilactobacillus reuteri) Explore Q8GP32  Go to UniProtKB:  Q8GP32

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
FRU (Subject of Investigation/LOI)	C [auth A], F [auth B]	beta-D-fructofuranose C6 H12 O6 RFSUNEUAIZKAJO-ARQDHWQXSA-N
CA (Subject of Investigation/LOI)	D [auth A], E [auth A], G [auth B], H [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.14 Å
• R-Value Free:  0.227 (Depositor), 0.230 (DCC) 
• R-Value Work:  0.178 (Depositor), 0.186 (DCC) 
• R-Value Observed: 0.180 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.24	α = 90
b = 99.92	β = 90
c = 153.03	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
XDS	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-01-22 
Deposition Author(s): Ni, D., Hou, X., Cheng, M., Xu, W., Rao, Y., Mu, W.

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Funding Organization	Location	Grant Number
Other private	China	2023YFF1103600
National Natural Science Foundation of China (NSFC)	China	22308118
Other private	China	BK20231045

Revision History  

• Version 1.0: 2025-01-22
  Type: Initial release