{{Infobox
| image = Neurofilament Structure
| infobox-header = Neurofilament Light Chain Protein
| infobox-subheader = Intermediate Filament Protein
| label1 = Gene
| data1 = NEFL
| label1 = UniProt ID
| data2 = P07196
| label3 = PDB Structure
| data3 = 2Y0A, 2Y2B
| label4 = Molecular Weight
| data4 = ~61 kDa (non-phosphorylated); migrates slower when phosphorylated
| label5 = Subcellular Localization
| data5 = Neuronal axons and dendrites (cytoskeleton)
| label6 = Protein Family
| data6 = Intermediate filament family, Type IV neurofilament proteins
| label7 = Expression
| data7 = Expressed in most neurons, particularly abundant in large myelinated axons
}}
Neurofilament Light Chain Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
NEUROFILAMENT LIGHT CHAIN is a gene/protein encoding a key neuronal protein involved in synaptic function, signal transduction, and cellular homeostasis. Dysfunction of NEUROFILAMENT LIGHT CHAIN is associated with neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, and related disorders.
Neurofilament light chain (NFL, also NF-L) is the smallest subunit of the neurofilament triplet:
NFL assembles with NF-M (medium) and NF-H (heavy) subunits to form the neurofilament heteropolymer. The stoichiometry is approximately 4:2:1 for NFL:NFM:NFH.
NFL is essential for neuronal architecture and function:
| Fluid | Utility | Key Points |
|---|---|---|
| CSF | Gold standard | Most validated; established reference ranges |
| Blood (serum/plasma) | Clinical utility | Less invasive; correlates with CSF levels |
| Dried blood spot | Screening | Suitable for large-scale studies |
Currently, NFL is primarily used as a biomarker rather than a therapeutic target. However:
The study of Neurofilament Light Chain Protein 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.