9D9I | pdb_00009d9i

Human Hsp90b nucleotide binding domain in complex with BRI2312

• PDB DOI: https://doi.org/10.2210/pdb9D9I/pdb

• Classification: CHAPERONE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2024-08-21 Released: 2025-09-10 
• Deposition Author(s): Kuntz, D.A., Prive, G.G.
• Funding Organization(s): Canadian Institutes of Health Research (CIHR), Canada Foundation for Innovation

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 
  0.187 (Depositor), 0.188 (DCC) 
• R-Value Work: 
  0.159 (Depositor), 0.160 (DCC) 

Starting Model: experimental

Literature

Human Hsp90b nucleotide binding domain in complex with BRI2312

Kuntz, D.A., Prive, G.G.

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: homology

Macromolecule Content 

• Total Structure Weight: 25.92 kDa 
• Atom Count: 2,262 
• Modeled Residue Count: 211 
• Deposited Residue Count: 224 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Heat shock protein HSP 90-beta	A	224	Homo sapiens	Mutation(s): 0  Gene Names: HSP90AB1, HSP90B, HSPC2, HSPC3, HSPCB
UniProt & NIH Common Fund Data Resources
Find proteins for P08238 (Homo sapiens) Explore P08238  Go to UniProtKB:  P08238
PHAROS:  P08238 GTEx:  ENSG00000096384

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
A1A24 (Subject of Investigation/LOI)	B [auth A]	(1P)-3-amino-6-[({1-[(2R)-2-(2,4-difluorophenyl)-2-hydroxy-3-(1H-1,2,4-triazol-1-yl)propyl]piperidin-4-yl}amino)methyl]-1-(4-phenyl-3,4-dihydro-2H-1,4-benzoxazin-6-yl)thieno[2,3-b]pyrazin-2(1H)-one C37 H37 F2 N9 O3 S PRCZCNBGHGABSD-DIPNUNPCSA-N
CL	C [auth A], D [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free:  0.187 (Depositor), 0.188 (DCC) 
• R-Value Work:  0.159 (Depositor), 0.160 (DCC) 

Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 66.794	α = 90
b = 90.524	β = 90
c = 97.451	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
Aimless	data scaling
CrysalisPro	data reduction
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-09-10 
Deposition Author(s): Kuntz, D.A., Prive, G.G.

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Funding Organization	Location	Grant Number
Canadian Institutes of Health Research (CIHR)	Canada	--
Canada Foundation for Innovation	Canada	--

Revision History  

• Version 1.0: 2025-09-10
  Type: Initial release