Kif1A is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
KIF1A is a gene/protein encoding a key neuronal protein involved in synaptic function, signal transduction, and cellular homeostasis. Dysfunction of KIF1A is associated with neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, and related disorders.
KIF1A is a motor protein that transports cargo along microtubules:
- Axonal transport: Transports synaptic vesicles, organelles
- Synaptic function: Delivers presynaptic components
- Mitochondrial distribution: Distributes mitochondria in axons
- Neuronal development: Essential for axon guidance
- Endolysosomal trafficking: Moves endocytic vesicles
- Dominant mutations cause pure HSP
- Impaired axonal transport
- Degeneration of corticospinal tract
- Mutations cause ALS
- Impaired axonal transport in motor neurons
- Disrupted organelle trafficking
- Dysregulated axonal transport in PD
- Mitochondrial trafficking defects
- Neuron-specific expression
- High in motor neurons
- Axons and dendrites
- 11025701: KIF1A mutations cause HSP. Nat Genet, 2000.
- 27260156: KIF1A in neurodegeneration. Nat Rev Neurol, 2016.
The study of Kif1A 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.
- Méreaux JL et al.. "Clinical and genetic spectra of 1550 index patients with hereditary spastic paraplegia." Brain : a journal of neurology (2022). DOI: 10.1093/brain/awab386 PubMed: 34983064
- Fink JK. "Hereditary spastic paraplegia: clinico-pathologic features and emerging molecular mechanisms." Acta neuropathologica (2013). DOI: 10.1007/s00401-013-1115-8 PubMed: 23897027
- Megarbane A et al.. "A 20-year Clinical and Genetic Neuromuscular Cohort Analysis in Lebanon: An International Effort." Journal of neuromuscular diseases (2022). DOI: 10.3233/JND-210652 PubMed: 34602496
- Boyle L et al.. "Genotype and defects in microtubule-based motility correlate with clinical severity in KIF1A-associated neurological disorder." HGG advances (2021). DOI: 10.1016/j.xhgg.2021.100026 PubMed: 33880452
- Liao P et al.. "Association of variants in the KIF1A gene with amyotrophic lateral sclerosis." Translational neurodegeneration (2022). DOI: 10.1186/s40035-022-00320-2 PubMed: 36284339
- Lin Q et al.. "KIF1A-associated neurological disorders: therapeutic opportunities and challenges." European journal of human genetics : EJHG (2025). DOI: 10.1038/s41431-025-01978-8 PubMed: 41310149
- Rizalar FS et al.. "Phosphatidylinositol 3,5-bisphosphate facilitates axonal vesicle transport and presynapse assembly." Science (New York, N.Y.) (2023). DOI: 10.1126/science.adg1075 PubMed: 37824668
- Chiba K et al.. "Insight into the regulation of axonal transport from the study of KIF1A-associated neurological disorder." Journal of cell science (2023). DOI: 10.1242/jcs.260742 PubMed: 36655764