domain:The HIN-200 domain mediates interaction with MDM2.,function:Major mediator of the tumor suppressor activity of IFN in breast cancer cells. Promotes ubiquitination and subsequent degradation of MDM2, which leads to p53/TP53 stabilization. Promotes ubiquitination and subsequent degradation of HDAC1, which in turn enhances maspin expression, and impairs invasive activity of cancer cells.,induction:By IFNalpha and IFNgamma in hematopoietic cancer cells.,similarity:Belongs to the HIN-200 family.,similarity:Contains 1 DAPIN domain.,similarity:Contains 1 HIN-200 domain.,subunit:Interacts with MDM2.,tissue specificity:Expressed in spleen, lymph node and peripheral blood leukocytes, and at lower levels in thymus, bone marrow and fetal liver. Down-regulated in breast tumors.,
[Isoform 1]: Nucleus, nucleoplasm.; [Isoform 3]: Nucleus, nucleoplasm.; [Isoform 5]: Nucleus. Nucleus speckle.
Expressed in spleen, lymph node and peripheral blood leukocytes, and at lower levels in thymus, bone marrow and fetal liver. Down-regulated in breast tumors.