FUS is a human gene whose product sTEX** (Stereoxin) is a protein involved in RNA processing and the SMN (Survival Motor Neuron) complex. STEX was initially identified as a testis-expressed protein with potential roles in male fertility, but subsequent research has revealed its involvement in motor neuron disease pathogenesis. Variants in FUS have been implicated in Amyotrophic Lateral Sclerosis (ALS), Spinal Muscular Atrophy (SMA), Neurological Implications. This page covers the gene's normal function, disease associations, expression patterns, and key research findings relevant to neurodegeneration.
FUS is a human gene whose product sTEX** (Stereoxin) is a protein involved in RNA processing and the SMN (Survival Motor Neuron) complex. STEX was initially identified as a testis-expressed protein with potential roles in male fertility, but subsequent research has revealed its involvement in motor neuron disease pathogenesis. Variants in FUS have been implicated in Amyotrophic Lateral Sclerosis (ALS), Spinal Muscular Atrophy (SMA), Neurological Implications. This page covers the gene's normal function, disease associations, expression patterns, and key research findings relevant to neurodegeneration.
Function
STEX (Stereoxin) is a protein involved in RNA processing and the SMN (Survival Motor Neuron) complex. STEX was initially identified as a testis-expressed protein with potential roles in male fertility, but subsequent research has revealed its involvement in motor neuron disease pathogenesis.
STEX contains:
Putative RNA-binding domains
Multiple phosphorylation sites
Nuclear localization signals
Key functions include:
Participation in the SMN complex for snRNP biogenesis
Potential role in RNA splicing
Involvement in transcriptional regulation
Testis-specific expression with additional broader expression
Disease Associations
Amyotrophic Lateral Sclerosis (ALS)
STEX has been implicated in [amyotrophic lateral sclerosis](/diseases/amyotrophic-lateral-sclerosis) through:
Genetic linkage studies identifying STEX variants in ALS patients
Interaction with known ALS proteins including [FUS](/genes/fus) and [TARDBP](/genes/tardbp)
Potential dysregulation of RNA processing pathways in motor [neurons](/entities/neurons)
Possible contribution to RNA metabolism defects observed in ALS
Spinal Muscular Atrophy (SMA)
STEX may play a role in [spinal muscular atrophy](/diseases/spinal-muscular-atrophy):