PSG9
Developmental stage
PSBG are produced in high quantity during pregnancy.
Function
Binds to the small latent transforming growth factor-beta complex, consisting of the N-terminal TGFB1 latency-associated peptide (LAP) and the mature form of TGFB1, thereby leading to the activation of TGFB1 (PubMed:27389696). The activation of TGFB1 leads to stimulation of naive CD4(+) T-cells to increase FoxP3 expression and to an increase in the number of FoxP3(+) regulatory T-cells (PubMed:27389696). Induces the differentiation of a suppressive CD4(+)LAP(+)FoxP3(-) T-cell subset (PubMed:27389696). Induces the secretion of TGFB1 in macrophages, but not in activated CD4(+) T-cells (PubMed:27389696). May reduce the expression of several pro-inflammatory cytokines and chemokines by CD4(+) T-cells, including IL2 and IL6 (PubMed:27389696).
Sequence Similarities
Belongs to the immunoglobulin superfamily. CEA family.
Cellular localization
- Secreted
Alternative names
PSG11, PSG9, Pregnancy-specific beta-1-glycoprotein 9, PS-beta-G-9, PSBG-9, Pregnancy-specific glycoprotein 9, PS34, Pregnancy-specific beta-1 glycoprotein B, Pregnancy-specific beta-1-glycoprotein 11, Pregnancy-specific glycoprotein 7, PS-beta-B, PS-beta-G-11, PSBG-11, Pregnancy-specific glycoprotein 11, PSG7