Cofilin 1 — Actin Depolymerizing Factor is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Cofilin 1 — Actin Depolymerizing Factor is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
<div class="infobox infobox-protein"> [@bernstein2010]
<div class="infobox-header">Cofilin-1 Protein</div> [@uniprot]
<div class="infobox-row"> [@pollard2010]
<div class="infobox-label">Protein Name</div> [@hotulainen2006]
<div class="infobox-value">Cofilin-1 (CFL1)</div> [@regulation1998]
</div> [@adfcofilinactin2010]
<div class="infobox-row"> [@amyloidbetainduced2009]
<div class="infobox-label">Gene</div> [@cofilin2016]
<div class="infobox-value">[CFL1](/genes/cfl1)</div> [@referencesa]
</div>
<div class="infobox-row">
<div class="infobox-label">UniProt ID</div>
<div class="infobox-value"><a href="https://www.uniprot.org/uniprot/P23528" target="_blank">P23528</a></div>
</div>
<div class="infobox-row">
<div class="infobox-label">Molecular Weight</div>
<div class="infobox-value">~19 kDa</div>
</div>
<div class="infobox-row">
<div class="infobox-label">Subcellular Localization</div>
<div class="infobox-value">Cytoplasm, Nucleus, Growth Cones, Synapses</div>
</div>
<div class="infobox-row">
<div class="infobox-label">Protein Family</div>
<div class="infobox-value">ADF/cofilin family</div>
</div>
<div class="infobox-row">
<div class="infobox-label">Associated Diseases</div>
<div class="infobox-value">[Alzheimer's Disease](/diseases/alzheimers), [Parkinson's Disease](/diseases/parkinsons-disease), [Amyotrophic Lateral Sclerosis](/diseases/als)</div>
</div>
</div>
Cofilin-1 (CFL1) is a critical actin-binding protein belonging to the ADF (Actin-Depolymerizing Factor) family. It plays essential roles in regulating actin cytoskeleton dynamics, which is fundamental to neuronal function, synaptic plasticity, and intracellular transport [@references]. Dysregulation of cofilin-1 activity is implicated in several neurodegenerative diseases including [Alzheimer's Disease](/diseases/alzheimers-disease), [Parkinson's Disease](/diseases/parkinsons-disease-disease), and [Amyotrophic Lateral Sclerosis](/diseases/als).
Cofilin-1 is a 19 kDa actin-binding protein with a characteristic ADF-H (actin-depolymerizing factor homology) domain. The protein possesses several key structural features [@bernstein2010]:
Cofilin-1 is a key regulator of actin cytoskeleton dynamics [@uniprot]:
Cofilin-1 activity is tightly regulated by multiple mechanisms:
Cofilin-1 is implicated in several neurodegenerative diseases [@regulation1998]:
| Disease | Role of Cofilin-1 |
|---------|-------------------|
| [Alzheimer's Disease\](/diseases/alzheimers-disease) | Dysregulated actin dynamics; cofilin rods in dendrites; impaired spine plasticity |
| [Parkinson's Disease\](/diseases/parkinsons-disease) | Altered synaptic actin; mitochondrial trafficking defects; Lewy body involvement |
| [ALS\](/diseases/als) | Aggregates in motor [neurons](/entities/neurons); axonal transport defects; cytoskeletal dysfunction |
"Cofilin rods" — actin-cofilin bundles — form in dendrites in response to [Amyloid-beta](/proteins/amyloid-beta) toxicity and neuronal stress [@adfcofilinactin2010]. These rods:
Cofilin-1 dysfunction affects:
Cofilin is sequestered into aggregates in motor neurons containing mutant [SOD1](/proteins/sod1-protein), [FUS](/proteins/fus-protein), and [TDP-43](/proteins/tdp-43), contributing to cytoskeletal dysfunction and axonal degeneration [@amyloidbetainduced2009].
| Strategy | Approach | Status |
|----------|----------|--------|
| LIM kinase inhibitors | Prevent cofilin inactivation | Preclinical |
| Actin stabilizers | Promote proper actin dynamics | Research |
| Antioxidants | Prevent oxidative inactivation of cofilin | Various stages |
| Gene therapy | Modulate CFL1 expression | Experimental |
The study of Cofilin 1 — Actin Depolymerizing Factor has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
The following diagram shows the key molecular relationships involving Cofilin-1 — Actin-Depolymerizing Factor discovered through SciDEX knowledge graph analysis: