9GGA | pdb_00009gga

Crystal structure of 14-3-3 sigma in complex with Tau pS214 peptide and covalent stabilizer FM089

• PDB DOI: https://doi.org/10.2210/pdb9GGA/pdb

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


• Deposited: 2024-08-13 Released: 2025-08-27 
• Deposition Author(s): van den Oetelaar, M.C.M., Brunsveld, L., Ottmann, C.
• Funding Organization(s): Netherlands Organisation for Scientific Research (NWO)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.24 Å
• R-Value Free: 
  0.199 (Depositor), 0.203 (DCC) 
• R-Value Work: 
  0.194 (Depositor), 0.198 (DCC) 
• R-Value Observed: 
  0.194 (Depositor) 

Starting Model: experimental

Literature

Modulation of Tau Condensation with 14-3-3/Tau Molecular Glues

van den Oetelaar, M.C.M., Ravatt, L., Maqueda Zelaya, F., Oberheide, A.O., van de Wijngaart, T.R., van Veldhuisen, T.W., van Boxtel, F.M.A., Verhoef, C.J.A., Cossar, P.J., Wegmann, S., Ottmann, C., Brunsveld, L.

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: 28.48 kDa 
• Atom Count: 1,953 
• Modeled Residue Count: 237 
• Deposited Residue Count: 249 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
14-3-3 protein sigma	A	236	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
Microtubule-associated protein tau	B [auth P]	13	Homo sapiens	Mutation(s): 0
UniProt & NIH Common Fund Data Resources
Find proteins for P10636 (Homo sapiens) Explore P10636  Go to UniProtKB:  P10636
PHAROS:  P10636 GTEx:  ENSG00000186868

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1IKS (Subject of Investigation/LOI)	C [auth A]	2-bromanyl-4-[[(3~{R})-3-oxidanyl-3,4-dihydro-2~{H}-quinolin-1-yl]sulfonyl]benzaldehyde C16 H14 Br N O4 S DJFVYYBDISBIMS-CYBMUJFWSA-N

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CSO	A	L-PEPTIDE LINKING	C3 H7 N O3 S		CYS
SEP	B [auth P]	L-PEPTIDE LINKING	C3 H8 N O6 P		SER

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.24 Å
• R-Value Free:  0.199 (Depositor), 0.203 (DCC) 
• R-Value Work:  0.194 (Depositor), 0.198 (DCC) 
• R-Value Observed: 0.194 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 82.516	α = 90
b = 112.34	β = 90
c = 62.729	γ = 90

Software Package:

Software Name	Purpose
autoPROC	data reduction
Aimless	data scaling
MOLREP	phasing
Coot	model building
REFMAC	refinement

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-08-27 
Deposition Author(s): van den Oetelaar, M.C.M., Brunsveld, L., Ottmann, C.

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Funding Organization	Location	Grant Number
Netherlands Organisation for Scientific Research (NWO)	Netherlands	--

Revision History  

• Version 1.0: 2025-08-27
  Type: Initial release