8S7A | pdb_00008s7a

HSPB8acd-C99S/F155T/A156S

• PDB DOI: https://doi.org/10.2210/pdb8S7A/pdb

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


• Deposited: 2024-02-29 Released: 2025-03-12 
• Deposition Author(s): Wang, Z., Benesch, J.
• Funding Organization(s): Medical Research Council (MRC, United Kingdom)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 
  0.266 (Depositor), 0.267 (DCC) 
• R-Value Work: 
  0.228 (Depositor), 0.228 (DCC) 
• R-Value Observed: 
  0.230 (Depositor) 

Starting Model: in silico

Literature

HSPB8acd C99S/F155T/A156S

Wang, Z., Benesch, J.

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: mass spectrometry

Macromolecule Content 

• Total Structure Weight: 9.33 kDa 
• Atom Count: 626 
• Modeled Residue Count: 74 
• Deposited Residue Count: 84 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Heat shock protein beta-8	A	84	Homo sapiens	Mutation(s): 3  Gene Names: HSPB8, CRYAC, E2IG1, HSP22, PP1629
UniProt & NIH Common Fund Data Resources
Find proteins for Q9UJY1 (Homo sapiens) Explore Q9UJY1  Go to UniProtKB:  Q9UJY1
PHAROS:  Q9UJY1 GTEx:  ENSG00000152137

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
GOL	C [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free:  0.266 (Depositor), 0.267 (DCC) 
• R-Value Work:  0.228 (Depositor), 0.228 (DCC) 
• R-Value Observed: 0.230 (Depositor) 

Space Group: I 4₁ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 98.273	α = 90
b = 98.273	β = 90
c = 42.958	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
xia2	data reduction
xia2	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-03-12 
Deposition Author(s): Wang, Z., Benesch, J.

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Funding Organization	Location	Grant Number
Medical Research Council (MRC, United Kingdom)	United Kingdom	--

Revision History  

• Version 1.0: 2025-03-12
  Type: Initial release