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BSCL2

Chr 11q12.3

BSCL2 lipid droplet biogenesis associated, seipin

Aliases:
seipin
MANE:
ENST00000360796.10

Annotations refreshed 1 month ago.

Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Adult onset hereditary spastic paraplegia

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Childhood onset hereditary spastic paraplegia

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Diabetes with additional phenotypes suggestive of a monogenic aetiology

    BIALLELIC, autosomal or pseudoautosomal
  • Early onset or syndromic epilepsy

    BIALLELIC, autosomal or pseudoautosomal
  • Familial diabetes

    BIALLELIC, autosomal or pseudoautosomal
  • Hereditary neuropathy

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Hereditary neuropathy or pain disorder

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown
  • Hereditary spastic paraplegia

    MONOALLELIC, autosomal or pseudoautosomal, imprinted status unknown

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Disease associations (Open Targets)

  • congenital generalized lipodystrophy type 2

    0.79
  • Autosomal dominant spastic paraplegia type 17

    0.77
  • neuronopathy, distal hereditary motor, type 5C

    0.76
  • hereditary spastic paraplegia 17

    0.75
  • severe neurodegenerative syndrome with lipodystrophy

    0.74
  • Berardinelli-Seip congenital lipodystrophy

    0.70
  • Charcot-Marie-Tooth disease type 2

    0.55
  • hereditary disease

    0.49
  • neuronopathy, distal hereditary motor, type 5A

    0.47
  • lipodystrophy

    0.46

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

Protein function (UniProt)

Seipin

Mediates the formation of lipid droplets during the differentiation and maturation of adipocytes (PubMed:19278620, PubMed:21533227, PubMed:27564575, PubMed:30293840, PubMed:31708432). Together with LDAF1, defines the sites of lipid droplet formation in the endoplasmic reticulum and promotes the aggregation of triacylglycerol molecules to form the core of a lipid droplet (nucleation) in the endoplasmic reticulum and drive budding of lipid droplets into the cytoplasm (PubMed:31708432). BSCL2 and LDAF1 also regulate protein and lipid delivery from the endoplasmic reticulum into growing lipid droplets (PubMed:27879284, PubMed:31178403). During early adipogenesis, BSCL2 inhibits GPAT3 and GPAT4 activity, thereby preventing phosphatidic acid accumulation that could antagonize PPARG and block differentiation (By similarity). This inhibition is then relieved by ADIG during adipocyte maturation, allowing expansion of lipid droplets (By similarity). Regulates the maturation of ZFYVE1-positive nascent lipid droplets and the function of the RAB18-ZFYVE1 complex in mediating the formation of endoplasmic reticulum-lipid droplet contacts (PubMed:30970241). Binds anionic phospholipids including phosphatidic acid (PubMed:30293840)

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.