9L2P | pdb_00009l2p

Crystal structure of AnAE-S34A mutant in complex with propionic acid

PDB DOI: https://doi.org/10.2210/pdb9L2P/pdb

Classification: HYDROLASE
Organism(s): Aspergillus niger
Expression System: Escherichia coli BL21(DE3)
Mutation(s): Yes

Deposited: 2024-12-17 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)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.60 Å
R-Value Free:
0.157 (Depositor), 0.160 (DCC)
R-Value Work:
0.137 (Depositor), 0.141 (DCC)
R-Value Observed:
0.138 (Depositor)

Starting Model: experimental
View more details

wwPDB Validation 3D Report Full Report

Validation slider image for 9L2P

Ligand Structure Quality Assessment

This is version 1.2 of the entry. See complete history.

Literature

Structural and functional characterization of a novel GDSL-acetylesterase from Aspergillus niger reveals unique acylated choline specificity

Xing, S., He, L., Hu, G., Xie, W., Wang, L., Li, C., Tian, G., Wang, X., Yuan, Y., Gao, F., Liu, J.

(2026) Chem Eng J 530: 173543

DOI: https://doi.org/10.1016/j.cej.2026.173543

Macromolecule Content

Total Structure Weight: 32.43 kDa
Atom Count: 2,472
Modeled Residue Count: 270
Deposited Residue Count: 293
Unique protein chains: 1

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cellulose-binding GDSL lipase/acylhydrolase	A	293	Aspergillus niger	Mutation(s): 1 Gene Names: CAN33_0018055 EC: 3.1.1.7
UniProt
Find proteins for A0A254UBZ6 (Aspergillus niger) Explore A0A254UBZ6 Go to UniProtKB: A0A254UBZ6
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	A0A254UBZ6
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
PPI (Subject of Investigation/LOI) Query on PPI Download:Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	PROPANOIC ACID C₃ H₆ O₂ XBDQKXXYIPTUBI-UHFFFAOYSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.60 Å
R-Value Free: 0.157 (Depositor), 0.160 (DCC)
R-Value Work: 0.137 (Depositor), 0.141 (DCC)
R-Value Observed: 0.138 (Depositor)

Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 78.598	α = 90
b = 78.598	β = 90
c = 91.39	γ = 120

Software Package:

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

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment

View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2025-10-29

Deposition Author(s):

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

Revision History (Full details and data files)

Version 1.0: 2025-10-29
Type: Initial release
Version 1.1: 2025-11-05
Changes: Database references, Structure summary
Version 1.2: 2026-02-18
Changes: Database references

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

CoreTrustSeal

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.