9S6E | pdb_00009s6e

Cryo-EM structure of human caspase-9 CARD (H38R) mutant filament

• PDB DOI: https://doi.org/10.2210/pdb9S6E/pdb
• EM Map EMD-54625: EMDB EMDataResource

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


• Deposited: 2025-07-31 Released: 2026-08-12 
• Deposition Author(s): Rawal, S., Bohn, S., Alderson, T.R., Madl, T., Pavkov-Keller, T., Desfosses, A.
• Funding Organization(s): Austrian Science Fund, Helmholtz Association, Grenoble Alliance for Integrated Structural Cell Biology (GRAL), Grenoble Instruct-ERIC Center (ISBG), French Infrastructure for Integrated Structural Biology (FRISBI)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

Starting Models: experimental

Literature

Cryo-EM structure of Caspase-9 CARD (H38R) mutant filament

Rawal, S., Bohn, S., Alderson, T.R., Madl, T., Pavkov-Keller, T., Desfosses, A.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 16-mer - A16 

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

Biological Assembly Evidence: electron microscopy

Macromolecule Content 

• Total Structure Weight: 180.86 kDa 
• Atom Count: 12,608 
• Modeled Residue Count: 1,552 
• Deposited Residue Count: 1,552 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Caspase-9	A [auth B], B [auth A], C, D, E, F, G, H, I, J, K, L, M, N, O, P	97	Homo sapiens	Mutation(s): 1  Gene Names: CASP9, MCH6 EC: 3.4.22.62
UniProt & NIH Common Fund Data Resources
Find proteins for P55211 (Homo sapiens) Explore P55211  Go to UniProtKB:  P55211
GTEx:  ENSG00000132906

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.50 Å
• Aggregation State: FILAMENT 
• Reconstruction Method: HELICAL 

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX
RECONSTRUCTION	cryoSPARC

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2026-08-12 
Deposition Author(s): Rawal, S., Bohn, S., Alderson, T.R., Madl, T., Pavkov-Keller, T., Desfosses, A.

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Funding Organization	Location	Grant Number
Austrian Science Fund	Austria	10.55776/DOC130
Helmholtz Association	Germany	--
Grenoble Alliance for Integrated Structural Cell Biology (GRAL)	France	--
Grenoble Instruct-ERIC Center (ISBG)	France	--
French Infrastructure for Integrated Structural Biology (FRISBI)	France	ANR-10-INBS-0005-02

Revision History  

• Version 1.0: 2026-08-12
  Type: Initial release