SAP30L: Proteins and Enzymes

SAP30L is a novel TGF- beta up-regulated mRNA species, the Sin3-associated protein 30-like, SAP30L has been identified. The predicted nuclear localization signal of SAP30L is sufficient for nuclear transport of the protein although mutating it does not completely remove SAP30L from the nuclei. By reason of its nuclear localization and close homology to SAP30 it is thought that SAP30L might have a role in recruiting the Sin3-histone deacetylase complex to specific co-repressor complexes in response to TGF-beta, leading to the silencing of proliferation-driving genes in the differentiating intestinal epithelial cells.