9VE5 | pdb_00009ve5

The MIDN Catch-IRF4 (V2Y) fusion protein

• PDB DOI: https://doi.org/10.2210/pdb9VE5/pdb

• Classification: NUCLEAR PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2025-06-09 Released: 2026-02-04 
• Deposition Author(s): Ding, J., Chen, Z., Zhong, Y.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.20 Å
• R-Value Free: 
  0.276 (Depositor), 0.275 (DCC) 
• R-Value Work: 
  0.215 (Depositor), 0.215 (DCC) 
• R-Value Observed: 
  0.218 (Depositor) 

Starting Model: in silico

Literature

The MIDN Catch-IRF4 (V2L) fusion protein

Ding, J., Chen, Z., Zhong, Y.

To be published.

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: 15.24 kDa 
• Atom Count: 981 
• Modeled Residue Count: 130 
• Deposited Residue Count: 141 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Midnolin,Interferon regulatory factor 4	A	68	Homo sapiens	Mutation(s): 1  Gene Names: MIDN, IRF4, MUM1
UniProt & NIH Common Fund Data Resources
Find proteins for Q504T8 (Homo sapiens) Explore Q504T8  Go to UniProtKB:  Q504T8
PHAROS:  Q504T8 GTEx:  ENSG00000167470
Find proteins for Q15306 (Homo sapiens) Explore Q15306  Go to UniProtKB:  Q15306
PHAROS:  Q15306 GTEx:  ENSG00000137265
UniProt Groups	Q15306Q504T8

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Midnolin	B	73	Homo sapiens	Mutation(s): 0  Gene Names: MIDN
UniProt & NIH Common Fund Data Resources
Find proteins for Q504T8 (Homo sapiens) Explore Q504T8  Go to UniProtKB:  Q504T8
PHAROS:  Q504T8 GTEx:  ENSG00000167470

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.20 Å
• R-Value Free:  0.276 (Depositor), 0.275 (DCC) 
• R-Value Work:  0.215 (Depositor), 0.215 (DCC) 
• R-Value Observed: 0.218 (Depositor) 

Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 88.267	α = 90
b = 88.267	β = 90
c = 72.338	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-02-04 
Deposition Author(s): Ding, J., Chen, Z., Zhong, Y.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2026-02-04
  Type: Initial release