9GOW | pdb_00009gow

Crystal structure of phosphorylated human IRE1a in complex with IA107

• PDB DOI: https://doi.org/10.2210/pdb9GOW/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2024-09-06 Released: 2025-09-17 
• Deposition Author(s): Liu, Y., Gasper, R., Wu, P.
• Funding Organization(s): Max Planck Society

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 
  0.281 (Depositor), 0.280 (DCC) 
• R-Value Work: 
  0.231 (Depositor), 0.231 (DCC) 
• R-Value Observed: 
  0.234 (Depositor) 

Starting Model: experimental

Literature

Crystal structure of phosphorylated human IRE1a in complex with IA107

Liu, Y., Gasper, R., Wu, P.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

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

Biological assembly 2 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 200.52 kDa 
• Atom Count: 12,359 
• Modeled Residue Count: 1,512 
• Deposited Residue Count: 1,736 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Serine/threonine-protein kinase/endoribonuclease IRE1	A, B, C, D	434	Homo sapiens	Mutation(s): 0  Gene Names: ERN1, IRE1 EC: 2.7.11.1 (PDB Primary Data), 3.1.26 (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for O75460 (Homo sapiens) Explore O75460  Go to UniProtKB:  O75460
PHAROS:  O75460 GTEx:  ENSG00000178607

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1IOO (Subject of Investigation/LOI)	E [auth A], F [auth B], G [auth C], H [auth D]	3-[5-bromanyl-2-methyl-1-(phenylcarbonyl)indol-3-yl]propanoic acid C19 H16 Br N O3 JNJZEKLLVASXOS-UHFFFAOYSA-N

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free:  0.281 (Depositor), 0.280 (DCC) 
• R-Value Work:  0.231 (Depositor), 0.231 (DCC) 
• R-Value Observed: 0.234 (Depositor) 

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.18	α = 74.61
b = 77.5	β = 78.09
c = 141.06	γ = 65.63

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-09-17 
Deposition Author(s): Liu, Y., Gasper, R., Wu, P.

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Funding Organization	Location	Grant Number
Max Planck Society	Germany	CGCIII_2018_Wu

Revision History  

• Version 1.0: 2025-09-17
  Type: Initial release