9UXJ | pdb_00009uxj

Structure of WDR5 in complex with Peptide 2_R4A

• PDB DOI: https://doi.org/10.2210/pdb9UXJ/pdb

• Classification: NUCLEAR PROTEIN
• Organism(s): Homo sapiens, synthetic construct
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2025-05-14 Released: 2026-02-11 
• Deposition Author(s): Xu, L., Yang, Y., Chen, X.M.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.76 Å
• R-Value Free: 
  0.225 (Depositor), 0.226 (DCC) 
• R-Value Work: 
  0.184 (Depositor), 0.185 (DCC) 
• R-Value Observed: 
  0.186 (Depositor) 

Starting Model: experimental

Literature

Structural basis for non-classical WIN peptides recognition by WDR5

Yang, Y., Pan, Y., Wang, Q., Li, H., Zhang, S., Sun, X., Xia, L., Xu, L., Chen, X.

(2026) J Mol Biology : 169666

• DOI: https://doi.org/10.1016/j.jmb.2026.169666

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 36.56 kDa 
• Atom Count: 2,544 
• Modeled Residue Count: 310 
• Deposited Residue Count: 332 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
WD repeat-containing protein 5	A	315	Homo sapiens	Mutation(s): 0  Gene Names: WDR5, BIG3
UniProt & NIH Common Fund Data Resources
Find proteins for P61964 (Homo sapiens) Explore P61964  Go to UniProtKB:  P61964
PHAROS:  P61964 GTEx:  ENSG00000196363

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Pep-2 R4A	B [auth D]	17	synthetic construct	Mutation(s): 0  EC: 3.6.4.12 (PDB Primary Data), 3.6.4.13 (PDB Primary Data)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.76 Å
• R-Value Free:  0.225 (Depositor), 0.226 (DCC) 
• R-Value Work:  0.184 (Depositor), 0.185 (DCC) 
• R-Value Observed: 0.186 (Depositor) 

Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 80.321	α = 90
b = 100.923	β = 90
c = 81.74	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-02-11 
Deposition Author(s): Xu, L., Yang, Y., Chen, X.M.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2026-02-11
  Type: Initial release