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Protein-coding gene in humans
Nuclear speckle splicing regulatory protein 1 is a protein that in humans is encoded by the NSRP1 gene .[ 5] [ 6]
NSRP1 is located within nuclear speckles .[ 7] membrane-less organelles within the nucleus and are rich in RNA splicing factors .[ 8] SRSF1 and SRSF2 and modulates pre-mRNA splicing.[ 7] [ 9] Knockout of the mouse ortholog Nsrp1 resulted in early embryonic lethality.[ 7]
Humans with biallelic pathogenic variants in NSRP1 have an autosomal recessive condition called neurodevelopmental disorder with spasticity, seizures, and brain abnormalities (NEDSSBA, MIM 620001).[ 10] [ 11] delayed developmental milestones , axial hypotonia, appendicular spasticity, epilepsy , and often microcephaly . Brain abnormalities including under-opercularization , cerebellar atrophy, and thinning of the corpus callosum can be seen. Patients with NEDSSBA often have a clinical diagnosis of spastic cerebral palsy (CP),[ 10]
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