9SZQ | pdb_00009szq

Crystal structure of the E336K mutant of human Apoptosis Inducing Factor

PDB DOI: https://doi.org/10.2210/pdb9SZQ/pdb

Classification: OXIDOREDUCTASE
Organism(s): Homo sapiens
Expression System: Escherichia coli
Mutation(s): Yes

Deposited: 2025-10-15 Released: 2026-04-22
Deposition Author(s): Martinez-Julvez, M., Ferreira, P., Ferrer, M.
Funding Organization(s): Ministerio de Ciencia e Innovacion (MCIN), Other government

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.80 Å
R-Value Free:
0.203 (Depositor), 0.209 (DCC)
R-Value Work:
0.168 (Depositor), 0.178 (DCC)
R-Value Observed:
0.170 (Depositor)

Starting Model: experimental
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Ligand Structure Quality Assessment

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Literature

Clinical and molecular characterization of a novel pathogenic AIFM1 E336K mutation connecting mitochondrial dysfunction and neurodegeneration.

Ferrer, M., Pedron, M., Soriano, O., Martinez-Julvez, M., Marin-Baquero, M., Garcia-Villanueva, R., Velazquez-Campoy, A., Marco-Brualla, J., Ripolles-Yuba, C., Fernandez-Silva, P., Medina, M., Miramar, M.D., Bestue, M., Moreno-Loshuertos, R., Ferreira, P.

(2026) Cell Commun Signal 24

PubMed: 41957773 Search on PubMed
DOI: https://doi.org/10.1186/s12964-026-02862-8
Primary Citation Related Structures:
9SZQ

Organizational Affiliation

Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza, Spain.

Macromolecule Content

Total Structure Weight: 59.16 kDa
Atom Count: 3,947
Modeled Residue Count: 471
Deposited Residue Count: 535
Unique protein chains: 1

Macromolecules

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Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Apoptosis-inducing factor 1, mitochondrial	A	535	Homo sapiens	Mutation(s): 1 Gene Names: AIFM1, AIF, PDCD8 EC: 1.6.99
UniProt & NIH Common Fund Data Resources
Find proteins for O95831 (Homo sapiens) Explore O95831 Go to UniProtKB: O95831
PHAROS: O95831 GTEx: ENSG00000156709
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	O95831
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
FAD (Subject of Investigation/LOI) Query on FAD Download:Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	FLAVIN-ADENINE DINUCLEOTIDE C₂₇ H₃₃ N₉ O₁₅ P₂ VWWQXMAJTJZDQX-UYBVJOGSSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]
GOL Query on GOL Download:Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	GLYCEROL C₃ H₈ O₃ PEDCQBHIVMGVHV-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 1.80 Å
R-Value Free: 0.203 (Depositor), 0.209 (DCC)
R-Value Work: 0.168 (Depositor), 0.178 (DCC)
R-Value Observed: 0.170 (Depositor)

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.283	α = 90
b = 89.099	β = 94.69
c = 60.11	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALA	data scaling
MOLREP	phasing

Structure Validation

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Ligand Structure Quality Assessment

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Entry History

& Funding Information

Deposition Data

Released Date: 2026-04-22

Deposition Author(s):

Martinez-Julvez, M.

Funding Organization	Location	Grant Number
Ministerio de Ciencia e Innovacion (MCIN)	Spain	PID2022-136369NB-I00
Other government		Biologia Estructural_E35_23R

Revision History (Full details and data files)

Version 1.0: 2026-04-22
Type: Initial release
Version 1.1: 2026-06-03
Changes: Database references

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.