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FTL Protein

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wiki page Created: 2026-04-02T07:19:08 By: crosslink-migration Quality: 50% ✓ SciDEX ID: wiki-proteins-ftl-protein
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protein557 wordssynced 2026-04-02

FTL Protein

Overview

FTL (Ferritin Light Chain) is the light subunit of the ferritin heteropolymer, playing a crucial role in iron storage and homeostasis in the brain. Together with FTH1 (ferritin heavy chain), FTL forms the 24-subunit ferritin nanocage that sequesters excess iron and protects [neurons](/entities/neurons) from oxidative damage. [@fthftl]

Infobox

<div class="infobox infobox-protein">
<table>
<tr><th colspan="2" style="background:#e8f4ea;">FTL Protein</th></tr>
<tr><td><b>Gene</b></td><td>[FTL](/genes/ftl)</td></tr>
<tr><td><b>UniProt ID</b></td><td>[P02789](https://www.uniprot.org/uniprotkb/P02789)</td></tr>
<tr><td><b>PDB Structures</b></td><td>2FFX, 3LYJ, 4Y0Y</td></tr>
<tr><td><b>Molecular Weight</b></td><td>~20 kDa (subunit)</td></tr>
<tr><td><b>Subcellular Localization</b></td><td>Cytosol, nucleus</td></tr>
<tr><td><b>Protein Family</b></td><td>Ferritin family</td></tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/alzheimer" style="color:#ef9a9a">Alzheimer</a>, <a href="/wiki/depression" style="color:#ef9a9a">Depression</a>, <a href="/wiki/dystonia" style="color:#ef9a9a">Dystonia</a>, <a href="/wiki/leukemia" style="color:#ef9a9a">Leukemia</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">70 edges</a></td>
</tr>
</table>
</div>

Structure

FTL is a 20 kDa subunit that co-assembles with FTH1 to form the native ferritin complex:

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Related Entities
FTLPROTEIN
Metadataorigin_type: v1_polymorphic_backfill
slugproteins-ftl-protein
kg_node_idFTLPROTEIN
entity_typeprotein
origin_typev1_polymorphic_backfill
source_tablewiki_pages
wiki_page_idwp-6f30287bbe7d
__merged_from{'merged_at': '2026-05-13', 'unprefixed_id': 'proteins-ftl-protein'}
_schema_version1
📊 Evidence Profile Foundational
Evidence Balance
+0%
Certainty
50%
Debates
0
Incoming
10
Outgoing
11
0 supporting 0 contradicting 0 neutral
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