7OPW | pdb_00007opw

Ternary complex of 14-3-3 sigma, Estrogen Receptor alfa phosphopeptide, and WQ136

• PDB DOI: https://doi.org/10.2210/pdb7OPW/pdb

• Classification: SIGNALING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2021-06-01 Released: 2022-06-08 
• Deposition Author(s): Centorrino, F., Ottmann, C.
• Funding Organization(s): H2020 Marie Curie Actions of the European Commission

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.81 Å
• R-Value Free: 
  0.229 (Depositor), 0.231 (DCC) 
• R-Value Work: 
  0.186 (Depositor), 0.186 (DCC) 
• R-Value Observed: 
  0.189 (Depositor) 

Starting Model: experimental

Literature

A crystallography-based study of fragment extensions into the 14-3-3 binding groove

Centorrino, F., Wu, Q., Cossar, P., Brunsveld, L., Ottmann, C.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 4-mer - A2B1C1 

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

Macromolecule Content 

• Total Structure Weight: 31.23 kDa 
• Atom Count: 2,181 
• Modeled Residue Count: 234 
• Deposited Residue Count: 268 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
14-3-3 protein sigma	A	253	Homo sapiens	Mutation(s): 0  Gene Names: SFN, HME1
UniProt & NIH Common Fund Data Resources
Find proteins for P31947 (Homo sapiens) Explore P31947  Go to UniProtKB:  P31947
PHAROS:  P31947 GTEx:  ENSG00000175793

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Estrogen receptor	B	15	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P03372 (Homo sapiens) Explore P03372  Go to UniProtKB:  P03372
PHAROS:  P03372 GTEx:  ENSG00000091831

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
0AW (Subject of Investigation/LOI)	C [auth A], D [auth A], E [auth A]	~{N}-[(5-carbamimidoyl-3-phenyl-thiophen-2-yl)methyl]-2,3-dihydro-1-benzofuran-5-carboxamide C21 H19 N3 O2 S OKYRJCCVSZQTDE-UHFFFAOYSA-N
BME	I [auth A]	BETA-MERCAPTOETHANOL C2 H6 O S DGVVWUTYPXICAM-UHFFFAOYSA-N
CL	G [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M
MG	F [auth A], H [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
TPO	B	L-PEPTIDE LINKING	C4 H10 N O6 P		THR

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.81 Å
• R-Value Free:  0.229 (Depositor), 0.231 (DCC) 
• R-Value Work:  0.186 (Depositor), 0.186 (DCC) 
• R-Value Observed: 0.189 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 81.981	α = 90
b = 110.495	β = 90
c = 61.228	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
DIALS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-06-08 
Deposition Author(s): Centorrino, F., Ottmann, C.

---

Funding Organization	Location	Grant Number
H2020 Marie Curie Actions of the European Commission	European Union	675179

Revision History  

• Version 1.0: 2022-06-08
  Type: Initial release
  
• Version 1.1: 2024-01-31
  Changes: Data collection, Refinement description
• Version 1.2: 2025-10-01
  Changes: Advisory, Derived calculations, Structure summary