3F5R

The crystal structure of a subunit of the heterodimeric FACT complex (Spt16p-Pob3p).

• PDB DOI: https://doi.org/10.2210/pdb3F5R/pdb

• Classification: transcription regulator
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2008-11-04 Released: 2008-11-18 
• Deposition Author(s): Tan, K., Xu, X., Cui, H., Savchenko, A., Edwards, A., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.192 
• R-Value Work: 0.181 
• R-Value Observed: 0.181 

Literature

The crystal structure of a subunit of the heterodimeric FACT complex (Spt16p-Pob3p).

Tan, K., Xu, X., Cui, H., Savchenko, A., Edwards, A., Joachimiak, A.

To be published.

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 22.16 kDa 
• Atom Count: 1,068 
• Modelled Residue Count: 113 
• Deposited Residue Count: 191 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
FACT complex subunit POB3	A	191	Saccharomyces cerevisiae	Mutation(s): 0  Gene Names: POB3, Saccharomyces cerevisiae, YML069W
UniProt
Find proteins for Q04636 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore Q04636  Go to UniProtKB:  Q04636

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	D [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
FMT	C [auth A]	FORMIC ACID C H2 O2 BDAGIHXWWSANSR-UHFFFAOYSA-N
CL	B [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.192 
• R-Value Work: 0.181 
• R-Value Observed: 0.181 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 68.268	α = 90
b = 68.268	β = 90
c = 67.763	γ = 120

Software Package:

Software Name	Purpose
SBC-Collect	data collection
SHELXD	phasing
MLPHARE	phasing
DM	model building
RESOLVE	model building
HKL-3000	phasing
REFMAC	refinement
HKL-3000	data reduction
HKL-3000	data scaling
DM	phasing
RESOLVE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-11-18 
Deposition Author(s): Tan, K., Xu, X., Cui, H., Savchenko, A., Edwards, A., Joachimiak, A., Midwest Center for Structural Genomics (MCSG)

Revision History  

• Version 1.0: 2008-11-18
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Refinement description, Version format compliance
• Version 1.2: 2023-12-27
  Changes: Data collection, Database references, Derived calculations
• Version 1.3: 2024-11-06
  Changes: Structure summary