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Survival Motor Neuron 1 Protein (SMN1)
- Target
- SMN1
- Molecular classification
- RNA-binding protein, Spliceosome component
01
Overview
The survival motor neuron 1 protein (SMN1) is a highly conserved, multifunctional protein essential for motor neuron survival and function. It is a key component of the SMN complex, which plays a critical role in snRNP biogenesis and spliceosome assembly. Deficiency in SMN1 leads to spinal muscular atrophy (SMA), a severe neurodegenerative disease. Therapeutic strategies aim to increase functional SMN protein levels to mitigate the effects of SMN1 deficiency.
02
Mechanism of action
Currently, approved therapies aim to increase SMN protein levels through various mechanisms such as gene therapy, splicing modulation, or stabilization of the protein.
03
Biological functions
snRNP biogenesisSpliceosome assemblyRNA metabolismPre-mRNA processingHistone mRNA processingSmall nucleolar RNP assemblyTelomerase activity regulationDNA repairTranscriptional regulationTranslation controlSelenoprotein synthesisMacromolecular traffickingCytoskeleton maintenanceEndocytosis regulationUbiquitinationAutophagy
04
Disease associations
Spinal Muscular Atrophy (SMA)Male infertilityInclusion body myositisAmyotrophic lateral sclerosis (ALS)Osteoarthritis
05
Safety considerations
Potential for off-target effects with splicing modulators.Immune response to gene therapy vectors.Long-term effects of increased SMN protein levels are still being studied.
06
Biomarkers
SMN protein levels in blood or cerebrospinal fluidSMN2 copy number
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