9LEI | pdb_00009lei

Nitrile synthetase ArtA

• PDB DOI: https://doi.org/10.2210/pdb9LEI/pdb

• Classification: BIOSYNTHETIC PROTEIN
• Organism(s): Penicillium aurantiogriseum
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2025-01-07 Released: 2026-01-14 
• Deposition Author(s): Ma, H.L., Zhang, K.K.
• Funding Organization(s): National Natural Science Foundation of China (NSFC), Other government

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.190 (Depositor), 0.191 (DCC) 
• R-Value Work: 
  0.163 (Depositor), 0.163 (DCC) 
• R-Value Observed: 
  0.164 (Depositor) 

Starting Model: in silico

Literature

Structure of nitrile synthetase ArtA

Ma, H.L., Zhang, K.K.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 192.1 kDa 
• Atom Count: 13,213 
• Modeled Residue Count: 1,500 
• Deposited Residue Count: 1,740 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Nitrile synthetase	A, B, C, D	435	Penicillium aurantiogriseum	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL (Subject of Investigation/LOI)	E [auth A], F [auth A], G [auth B], H [auth B], I [auth C], J [auth C]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.190 (Depositor), 0.191 (DCC) 
• R-Value Work:  0.163 (Depositor), 0.163 (DCC) 
• R-Value Observed: 0.164 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 91.178	α = 90
b = 106.764	β = 108.68
c = 94.63	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
autoPX	data reduction
HKL-3000	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-01-14 
Deposition Author(s): Ma, H.L., Zhang, K.K.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	32271358
Other government		LZR202211060073
Other government		ZR2024QC065

Revision History  

• Version 1.0: 2026-01-14
  Type: Initial release