9L1R | pdb_00009l1r

Crystal structure of AnAE in apo form, a fungal GDSL-Acetylesterase with acetylcholinesterase-like activity from Aspergillus niger

• PDB DOI: https://doi.org/10.2210/pdb9L1R/pdb

• Classification: HYDROLASE
• Organism(s): Aspergillus niger
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2024-12-15 Released: 2025-10-29 
• Deposition Author(s): Xing, S.Q., Hu, G.L., He, L.P.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 
  0.175 (Depositor), 0.177 (DCC) 
• R-Value Work: 
  0.147 (Depositor), 0.150 (DCC) 
• R-Value Observed: 
  0.149 (Depositor) 

Starting Model: experimental

Literature

Structural and Functional Characterization of a Novel GDSL-Acetylesterase from Aspergillus niger Reveals Unique Acylated Choline Specificity

Xing, S.Q., Hu, G.L., Xie, W., Wang, L., Tian, G.H., Yuan, Y., Gao, F.L., Wang, X., Li, C.Q., He, L.P.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 32.38 kDa 
• Atom Count: 2,358 
• Modeled Residue Count: 269 
• Deposited Residue Count: 293 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cellulose-binding GDSL lipase/acylhydrolase	A	293	Aspergillus niger	Mutation(s): 0  Gene Names: CAN33_0018055
UniProt
Find proteins for A0A254UBZ6 (Aspergillus niger) Explore A0A254UBZ6  Go to UniProtKB:  A0A254UBZ6

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free:  0.175 (Depositor), 0.177 (DCC) 
• R-Value Work:  0.147 (Depositor), 0.150 (DCC) 
• R-Value Observed: 0.149 (Depositor) 

Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 78.957	α = 90
b = 78.957	β = 90
c = 91.867	γ = 120

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-10-29 
Deposition Author(s): Xing, S.Q., Hu, G.L., He, L.P.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	31870002

Revision History  

• Version 1.0: 2025-10-29
  Type: Initial release
  
• Version 1.1: 2025-11-05
  Changes: Database references, Structure summary