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BSN

Chr 3p21.31

bassoon presynaptic cytomatrix protein

MANE:
ENST00000296452.5

Annotations refreshed 9 hours ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Moderate Evidence (Amber)

  • Early onset or syndromic epilepsy

    BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
  • Intellectual disability

    BIALLELIC, autosomal or pseudoautosomal
  • DDG2P

    BOTH monoallelic and biallelic, autosomal or pseudoautosomal
  • Monogenic hearing loss

Disease associations (Open Targets)

  • epilepsy

    0.36
  • neurodevelopmental disorder

    0.24
  • neurodegenerative disease

    0.21
  • ulcerative colitis

    0.15
  • inflammatory bowel disease

    0.14
  • Parkinson disease

    0.14
  • Moebius syndrome

    0.12
  • Mobius syndrome

    0.12
  • vascular parkinsonism

    0.12
  • parkinsonian disorder

    0.12

Score is the Open Targets composite evidence score (0-1). Higher = stronger gene-disease association.

Protein function (UniProt)

Protein bassoon

Scaffold protein of the presynaptic cytomatrix at the active zone (CAZ) which is the place in the synapse where neurotransmitter is released (PubMed:12812759). After synthesis, participates in the formation of Golgi-derived membranous organelles termed Piccolo-Bassoon transport vesicles (PTVs) that are transported along axons to sites of nascent synaptic contacts (PubMed:19380881). At the presynaptic active zone, regulates the spatial organization of synaptic vesicle cluster, the protein complexes that execute membrane fusion and compensatory endocytosis (By similarity). Also functions in processes other than assembly such as the regulation of specific presynaptic protein ubiquitination by interacting with SIAH1 or the regulation of presynaptic autophagy by associating with ATG5 (By similarity). Also mediates synapse to nucleus communication leading to reconfiguration of gene expression by associating with the transcriptional corepressor CTBP1 and by subsequently reducing the size of its pool available for nuclear import (By similarity). Inhibits the activity of the proportion of DAO enzyme that localizes to the presynaptic active zone, which may modulate synaptic transmission (By similarity)

Data sources: HGNC (CC BY 4.0), AlphaFold (CC BY 4.0, Jumper et al. Nature 2021), Genomics England PanelApp (CC BY 4.0), ClinGen, Open Targets (CC0), UniProt.

Not for sole clinical decision-making. Always verify against primary sources.