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CD109

Function

Modulates negatively TGFB1 signaling in keratinocytes.

Post-translational modifications

N-glycosylated.

2 forms of 150 (p150) and 120 kDa (p120) exist due to proteolytic degradation from a 180 kDa form.

Sequence similarities

Belongs to the protease inhibitor I39 (alpha-2-macroglobulin) family.

Tissue specificity

Widely expressed with high level in uterus, aorta, heart, lung, trachea, placenta and in fetal heart, kidney, liver, spleen and lung. Expressed by CD34(+) acute myeloid leukemia cell lines, T-cell lines, activated T-lymphoblasts, endothelial cells and activated platelets. Isoform 4 is expressed in placenta. Isoform 1 is expressed in keratinocytes and placenta.

Cellular localization

  • Cell membrane
  • Lipid-anchor
  • GPI-anchor

Alternative names

  • CD109 antigen
  • 150 kDa TGF-beta-1-binding protein
  • C3 and PZP-like alpha-2-macroglobulin domain-containing protein 7
  • Platelet-specific Gov antigen
  • p180
  • r150
  • CPAMD7
  • CD109

Target type

Proteins

Molecular weight

161689Da