8QTC

Crystal structure of Arabidopsis thaliana 14-3-3 omega in complex with a phosphopeptide from the transcription factor BZR1.

• PDB DOI: https://doi.org/10.2210/pdb8QTC/pdb

• Classification: PEPTIDE BINDING PROTEIN
• Organism(s): Arabidopsis thaliana
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2023-10-12 Released: 2023-11-15 
• Deposition Author(s): Hothorn, M., Obergfell, E.
• Funding Organization(s): Swiss National Science Foundation

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free: 0.250 
• R-Value Work: 0.217 
• R-Value Observed: 0.218 

Literature

Mechanistic insights into the function of 14-3-3 proteins as negative regulators of brassinosteroid signaling.

Obergfell, E., Hohmann, U., Moretti, A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

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

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

Biological Assembly Evidence: light scattering

Macromolecule Content

• Total Structure Weight: 55.44 kDa 
• Atom Count: 3,801 
• Modelled Residue Count: 476 
• Deposited Residue Count: 485 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
14-3-3-like protein GF14 omega	A, C [auth B]	240	Arabidopsis thaliana	Mutation(s): 0  Gene Names: GRF2
UniProt
Find proteins for Q01525 (Arabidopsis thaliana) Explore Q01525  Go to UniProtKB:  Q01525

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Protein BRASSINAZOLE-RESISTANT 1	B [auth C]	5	Arabidopsis thaliana	Mutation(s): 0  Gene Names: BZR1

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	E [auth A], F [auth A], G [auth B], H [auth B], I [auth B]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
CO	D [auth A]	COBALT (II) ION Co XLJKHNWPARRRJB-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
SEP	B [auth C]	L-PEPTIDE LINKING	C3 H8 N O6 P		SER

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free: 0.250 
• R-Value Work: 0.217 
• R-Value Observed: 0.218 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 131.503	α = 90
b = 131.503	β = 90
c = 256.357	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XSCALE	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-11-15 
Deposition Author(s): Hothorn, M., Obergfell, E.

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Funding Organization	Location	Grant Number
Swiss National Science Foundation	Switzerland	310030_205201

Revision History  

• Version 1.0: 2023-11-15
  Type: Initial release