7QQE | pdb_00007qqe

Nuclear factor one X - NFIX in P41212

• PDB DOI: https://doi.org/10.2210/pdb7QQE/pdb

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


• Deposited: 2022-01-07 Released: 2023-01-18 
• Deposition Author(s): Lapi, M., Chaves-Sanjuan, A., Gourlay, L.J., Tiberi, M., Polentarutti, M., Demitri, N., Bais, G., Nardini, M.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free: 
  0.259 (Depositor), 0.260 (DCC) 
• R-Value Work: 
  0.223 (Depositor), 0.220 (DCC) 
• R-Value Observed: 
  0.225 (Depositor) 

Starting Model: experimental

Literature

Nuclear factor one X - NFIX in P41212

Tiberi, M., Lapi, M., Gourlay, L.J., Chaves-Sanjuan, A., Polentarutti, M., Demitri, N., Cavinato, M., Bonnet, D.M.V., Taglietti, V., Righetti, A., Sala, R., Cauteruccio, S., Kumawat, A., Russo, R., Barbiroli, A.G., Gnesutta, N., Camilloni, C., Bolognesi, M., Messina, G., Nardini, M.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 20.01 kDa 
• Atom Count: 1,368 
• Modeled Residue Count: 163 
• Deposited Residue Count: 167 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Nuclear factor 1 X-type	A	167	Homo sapiens	Mutation(s): 0  Gene Names: NFIX
UniProt & NIH Common Fund Data Resources
Find proteins for Q14938 (Homo sapiens) Explore Q14938  Go to UniProtKB:  Q14938
PHAROS:  Q14938 GTEx:  ENSG00000008441

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EPE	E [auth A]	4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID C8 H18 N2 O4 S JKMHFZQWWAIEOD-UHFFFAOYSA-N
ZN	B [auth A], C [auth A], D [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.50 Å
• R-Value Free:  0.259 (Depositor), 0.260 (DCC) 
• R-Value Work:  0.223 (Depositor), 0.220 (DCC) 
• R-Value Observed: 0.225 (Depositor) 

Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 65.009	α = 90
b = 65.009	β = 90
c = 127.89	γ = 90

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-01-18 
Deposition Author(s): Lapi, M., Chaves-Sanjuan, A., Gourlay, L.J., Tiberi, M., Polentarutti, M., Demitri, N., Bais, G., Nardini, M.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2023-01-18
  Type: Initial release
  
• Version 1.1: 2024-01-31
  Changes: Data collection, Refinement description
• Version 1.2: 2025-12-24
  Changes: Database references, Structure summary
• Version 1.3: 2026-01-21
  Changes: Database references