9RSB | pdb_00009rsb

Crystal Structure of Phenylalanine Ammonia Lyase (PAL) from Petroselinum crispum bound to N-Phenylglycine

• PDB DOI: https://doi.org/10.2210/pdb9RSB/pdb

• Classification: LYASE
• Organism(s): Petroselinum crispum
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2025-06-30 Released: 2026-07-08 
• Deposition Author(s): Lang, P.A., Schofield, C.J., Bencze, L.C., Brem, J.
• Funding Organization(s): Medical Research Council (MRC, United Kingdom), European Union (EU), National Authority for Scientific Research in Romania (ANCS)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 
  0.193 (Depositor), 0.200 (DCC) 
• R-Value Work: 
  0.162 (Depositor), 0.171 (DCC) 
• R-Value Observed: 
  0.163 (Depositor) 

Starting Model: experimental

Literature

Crystal Structure of Phenylalanine Ammonia Lyase (PAL) from Petroselinum crispum bound to N-Phenylglycine

Lang, P.A., Schofield, C.J., Bencze, L.C., Brem, J.

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: 162.4 kDa 
• Atom Count: 11,434 
• Modeled Residue Count: 1,375 
• Deposited Residue Count: 1,480 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Phenylalanine ammonia-lyase 1	A, B	740	Petroselinum crispum	Mutation(s): 4  Gene Names: PAL1 EC: 4.3.1.24
UniProt
Find proteins for P24481 (Petroselinum crispum) Explore P24481  Go to UniProtKB:  P24481

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1JJC( Subject of Investigation/LOI)	C [auth A], E [auth B]	N-Phenylglycine C8 H9 N O2 NPKSPKHJBVJUKB-UHFFFAOYSA-N
EDO	D [auth A], F [auth B]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MDO	A, B	L-PEPTIDE LINKING	C8 H11 N3 O3		ALA, SER, GLY

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free:  0.193 (Depositor), 0.200 (DCC) 
• R-Value Work:  0.162 (Depositor), 0.171 (DCC) 
• R-Value Observed: 0.163 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 120.315	α = 90
b = 162.439	β = 90
c = 143.525	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
xia2	data reduction
xia2	data scaling
PHASER	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-07-08 
Deposition Author(s): Lang, P.A., Schofield, C.J., Bencze, L.C., Brem, J.

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Funding Organization	Location	Grant Number
Medical Research Council (MRC, United Kingdom)	United Kingdom	MRF-145-0004-TPG-AVISO
European Union (EU)	European Union	760251./28.12.2023
National Authority for Scientific Research in Romania (ANCS)	Romania	PNRR-C9-I8-CF92/31.07.2023

Revision History  

• Version 1.0: 2026-07-08
  Type: Initial release