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MBTPS2

Chr Xp22.12

membrane bound transcription factor peptidase, site 2

Aliases:
S2P
MANE:
ENST00000379484.10

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Predicted protein structure

Clinical relevance (Genomics England PanelApp)

Diagnostic Grade (Green)

  • Clefting

    X-LINKED: hemizygous mutation in males, biallelic mutations in females
  • Ectodermal dysplasia

    X-LINKED: hemizygous mutation in males, biallelic mutations in females
  • Familial cicatricial alopecia

    X-LINKED: hemizygous mutation in males, biallelic mutations in females
  • Fetal anomalies

    X-LINKED: hemizygous mutation in males, biallelic mutations in females
  • Intellectual disability

    X-LINKED: hemizygous mutation in males, monoallelic mutations in females may cause disease (may be less severe, later onset than males)
  • Palmoplantar keratodermas

    X-LINKED: hemizygous mutation in males, biallelic mutations in females
  • Osteogenesis imperfecta

    X-LINKED: hemizygous mutation in males, biallelic mutations in females
  • Skeletal dysplasia

    X-LINKED: hemizygous mutation in males, biallelic mutations in females

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Disease associations (Open Targets)

  • IFAP syndrome 1, with or without BRESHECK syndrome

    0.76
  • keratosis follicularis spinulosa decalvans

    0.62
  • BRESEK syndrome

    0.60
  • Olmsted syndrome 1

    0.56
  • osteogenesis imperfecta, type 19

    0.51
  • IFAP syndrome

    0.50
  • neurodegenerative disease

    0.50
  • Olmsted syndrome

    0.46
  • cicatricial alopecia

    0.46
  • osteogenesis imperfecta type 4

    0.37

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

Protein function (UniProt)

Membrane-bound transcription factor site-2 protease

Zinc metalloprotease that mediates intramembrane proteolysis of proteins such as ATF6, ATF6B, SREBF1/SREBP1 and SREBF2/SREBP2 (PubMed:10805775, PubMed:11163209). Catalyzes the second step in the proteolytic activation of the sterol regulatory element-binding proteins (SREBPs) SREBF1/SREBP1 and SREBF2/SREBP2: cleaves SREBPs within the first transmembrane segment, thereby releasing the N-terminal segment with a portion of the transmembrane segment attached (PubMed:10805775, PubMed:27380894, PubMed:9659902). Mature N-terminal SREBP fragments shuttle to the nucleus and activate gene transcription (PubMed:10805775, PubMed:27380894, PubMed:9659902). Also mediates the second step in the proteolytic activation of the cyclic AMP-dependent transcription factor ATF-6 (ATF6 and ATF6B) (PubMed:11163209). Involved in intramembrane proteolysis during bone formation (PubMed:27380894). In astrocytes and osteoblasts, upon DNA damage and ER stress, mediates the second step of the regulated intramembrane proteolytic activation of the transcription factor CREB3L1, leading to the inhibition of cell-cycle progression (PubMed:16417584)

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.