Ferritin Mitochondrial (FTMT)

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Ferritin Mitochondrial (FTMT)

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<table class="infobox infobox-protein">
<tr><th class="infobox-header" colspan="2">Ferritin Mitochondrial (FTMT)</th></tr>
<tr><td class="label">Gene</td><td>[FTMT](/genes/ftmt)</td></tr>
<tr><td class="label">UniProt</td><td><a href="https://www.uniprot.org/uniprot/P04183" target="_blank">P04183</a></td></tr>
<tr><td class="label">PDB</td><td><a href="https://www.rcsb.org/structure/5ML2" target="_blank">5ML2</a></td></tr>
<tr><td class="label">Molecular Weight</td><td>~25 kDa (subunit), 200 kDa (24-mer)</td></tr>
<tr><td class="label">Subcellular Localization</td><td>Mitochondria (mitochondrial matrix)</td></tr>
<tr><td class="label">Protein Family</td><td>Ferritin family</td></tr>
<tr><td class="label">Aliases</td><td>MtF, Mitochondrial Ferritin</td></tr>
</table>

Ferritin Mitochondrial (FTMT)

Introduction

Mitochondrial Ferritin (FTMT) is a specialized iron-storage protein encoded by the [FTMT](/genes/ftmt) gene. Unlike cytosolic ferritin, FTMT is targeted to mitochondria and plays crucial roles in iron homeostasis, oxidative stress protection, and cellular survival. FTMT has attracted significant attention in neurodegenerative disease research due to the well-established role of iron dysregulation and oxidative stress in [Alzheimer's disease](/diseases/alzheimers-disease) and [Parkinson's disease](/diseases/parkinsons-disease) [1].

Structure

FTMT has a unique structure adapted for mitochondrial function:

Monomer Structure

~25 kDa per subunit
Contains the classic ferritin fold
Iron-binding sites in the ferroxidase center

...

<table class="infobox infobox-protein">
<tr><th class="infobox-header" colspan="2">Ferritin Mitochondrial (FTMT)</th></tr>
<tr><td class="label">Gene</td><td>[FTMT](/genes/ftmt)</td></tr>
<tr><td class="label">UniProt</td><td><a href="https://www.uniprot.org/uniprot/P04183" target="_blank">P04183</a></td></tr>
<tr><td class="label">PDB</td><td><a href="https://www.rcsb.org/structure/5ML2" target="_blank">5ML2</a></td></tr>
<tr><td class="label">Molecular Weight</td><td>~25 kDa (subunit), 200 kDa (24-mer)</td></tr>
<tr><td class="label">Subcellular Localization</td><td>Mitochondria (mitochondrial matrix)</td></tr>
<tr><td class="label">Protein Family</td><td>Ferritin family</td></tr>
<tr><td class="label">Aliases</td><td>MtF, Mitochondrial Ferritin</td></tr>
</table>

Ferritin Mitochondrial (FTMT)

Introduction

Mitochondrial Ferritin (FTMT) is a specialized iron-storage protein encoded by the [FTMT](/genes/ftmt) gene. Unlike cytosolic ferritin, FTMT is targeted to mitochondria and plays crucial roles in iron homeostasis, oxidative stress protection, and cellular survival. FTMT has attracted significant attention in neurodegenerative disease research due to the well-established role of iron dysregulation and oxidative stress in [Alzheimer's disease](/diseases/alzheimers-disease) and [Parkinson's disease](/diseases/parkinsons-disease) [1].

Structure

FTMT has a unique structure adapted for mitochondrial function:

Monomer Structure

~25 kDa per subunit
Contains the classic ferritin fold
Iron-binding sites in the ferroxidase center

Quaternary Structure

Forms 24-mer spherical shells (similar to other ferritins)
Hollow cage-like structure
Can store up to ~2000 iron atoms per molecule

Mitochondrial Targeting

N-terminal mitochondrial targeting sequence
Processed upon mitochondrial import
Matrix-facing protein

Normal Function

Iron Storage and Homeostasis

FTMT's primary function is iron management:

Iron sequestration: Stores excess iron in safe form
Ferroxidase activity: Converts toxic Fe2+ to Fe3+
Iron availability: Regulates iron for mitochondrial enzymes
Cellular iron balance: Maintains iron homeostasis

Oxidative Stress Protection

By managing iron, FTMT protects against oxidative stress:

Prevents Fenton chemistry: Reduces hydroxyl radical formation
Lipid peroxidation prevention: Protects membranes from [ROS](/entities/reactive-oxygen-species)
DNA protection: Reduces oxidative DNA damage

Mitochondrial Function

FTMT supports mitochondrial health:

Iron-sulfur cluster synthesis: Provides iron for Fe-S cluster assembly
Heme synthesis: Supplies iron for heme biosynthesis
Respiratory chain function: Protects mitochondria from iron-induced damage

Neuronal Protection

In the nervous system:

Neuroprotection: Guards [neurons](/entities/neurons) from iron-mediated toxicity
Synaptic function: Supports synaptic iron homeostasis
Myelination: Important for oligodendrocyte function

Role in Neurodegeneration

Alzheimer's Disease

FTMT is critically involved in AD pathogenesis:

Iron dysregulation:

Iron accumulates in AD brains [2]
FTMT expression is altered in AD neurons
May contribute to iron-induced [Aβ](/proteins/amyloid-beta) toxicity

Oxidative stress:

Enhanced oxidative stress in AD
FTMT provides antioxidant protection
[Ferroptosis](/entities/ferroptosis) may contribute to neuronal loss

Mitochondrial dysfunction:

Mitochondrial iron overload in AD
FTMT protects mitochondria from iron damage

Parkinson's Disease

FTMT is highly relevant to PD:

Iron accumulation:

Iron accumulates in substantia nigra in PD [3]
FTMT may be protective against iron-induced dopaminergic neuron loss
Genetic variants of FTMT may modify PD risk

Mitochondrial dysfunction:

Central to PD pathogenesis
FTMT protects dopaminergic neurons
Iron-induced mitochondrial damage is a key mechanism

Neuroprotection:

Overexpression of FTMT protects dopaminergic neurons
Potential therapeutic target

Other Neurodegenerative Conditions

Amyotrophic lateral sclerosis: Iron dysregulation in motor neurons
Huntington's disease: Iron accumulation in striatum
Ferroptosis: New iron-dependent cell death pathway

Therapeutic Implications

FTMT is a promising therapeutic target:

Iron Modulation

Iron chelators (deferoxamine, deferasirox)
Small molecules that modulate FTMT expression

Gene Therapy

AAV-mediated FTMT delivery
CRISPR approaches

Small Molecule Activators

FTMT expression enhancers
Ferroptosis inhibitors

Research Findings

Key findings:

FTMT expression is tissue-specific
Genetic variants affect neurodegenerative disease risk
FTMT-based therapies are in development

References

[Unknown, Cozzolino & Ferri, Mitochondrial ferritin in neurodegeneration (2019) (2019)](https://doi.org/10.1007/s12035-019-01756-w)

[Rashid et al., Iron in Alzheimer disease (2019) (2019)](https://doi.org/10.1002/jnr.24521)

[Oakley et al., Iron in Parkinson disease (2020) (2020)](https://doi.org/10.1002/mds.28005)

[Zhang et al., Ferroptosis in neurodegeneration (2018) (2018)](https://doi.org/10.1038/s41580-018-0043-9)

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Related Entities

FTMTPROTEIN

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slug	proteins-ftmt-protein
kg_node_id	FTMTPROTEIN
entity_type	protein
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source_table	wiki_pages
wiki_page_id	wp-718ac85583a5
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_schema_version	1

📊 Evidence Profile Foundational

Evidence Balance

+0%

Certainty

100%

Debates

0

Incoming

29

Outgoing

32

0 supporting 0 contradicting 0 neutral

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📗 Cite This Artifact

Ferritin Mitochondrial (FTMT)

Ferritin Mitochondrial (FTMT)

Introduction

Structure

Monomer Structure

Ferritin Mitochondrial (FTMT)

Introduction

Structure

Monomer Structure

Quaternary Structure

Mitochondrial Targeting

Normal Function

Iron Storage and Homeostasis

Oxidative Stress Protection

Mitochondrial Function

Neuronal Protection

Role in Neurodegeneration

Alzheimer's Disease

Parkinson's Disease

Other Neurodegenerative Conditions

Therapeutic Implications

Iron Modulation

Gene Therapy

Small Molecule Activators

Research Findings

See Also

References

💬 Discussion