4G2O

Human Thymidylate Synthase M190K with bound Purpurogallin

• PDB DOI: https://doi.org/10.2210/pdb4G2O/pdb

• Classification: TRANSFERASE/TRANSFERASE INHIBITOR
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2012-07-12 Released: 2013-07-17 
• Deposition Author(s): Celeste, L.R., Lebioda, L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.246 
• R-Value Work: 0.224 
• R-Value Observed: 0.225 

Starting Model: experimental

Literature

Oxidation of Cysteine 195 of Huyman Thymidylate Synthase by Purpurogallin

Celeste, L.R., Lovelace, L.L., Lebioda, L.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 36.28 kDa 
• Atom Count: 2,243 
• Modelled Residue Count: 273 
• Deposited Residue Count: 313 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Thymidylate synthase	A [auth X]	313	Homo sapiens	Mutation(s): 1  Gene Names: OK/SW-cl.29, TS, TYMS EC: 2.1.1.45
UniProt & NIH Common Fund Data Resources
Find proteins for P04818 (Homo sapiens) Explore P04818  Go to UniProtKB:  P04818
PHAROS:  P04818 GTEx:  ENSG00000176890

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
TIY	B [auth X]	2,3,4,6-tetrahydroxy-5H-benzo[7]annulen-5-one C11 H8 O5 WDGFFVCWBZVLCE-UHFFFAOYSA-N
SO4	C [auth X], D [auth X]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CME	A [auth X]	L-PEPTIDE LINKING	C5 H11 N O3 S2		CYS
CSD	A [auth X]	L-PEPTIDE LINKING	C3 H7 N O4 S		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.25 Å
• R-Value Free: 0.246 
• R-Value Work: 0.224 
• R-Value Observed: 0.225 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 95.727	α = 90
b = 95.727	β = 90
c = 80.414	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
DENZO	data reduction
SCALEPACK	data scaling
HKL-2000	data scaling
PHASES	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2013-07-17 
Deposition Author(s): Celeste, L.R., Lebioda, L.

Revision History  

• Version 1.0: 2013-07-17
  Type: Initial release
  
• Version 1.1: 2014-11-19
  Changes: Structure summary
• Version 1.2: 2017-11-15
  Changes: Refinement description
• Version 1.3: 2023-09-13
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.4: 2024-11-20
  Changes: Structure summary