BRMS1

This gene reduces the metastatic potential, but not the tumorogenicity, of human breast cancer and melanoma cell lines. The protein encoded by this gene localizes primarily to the nucleus and is a component of the mSin3a family of histone deacetylase complexes (HDAC). The protein contains two coiled-coil motifs and several imperfect leucine zipper motifs. Alternative splicing results in two transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

Full Name

Breast Cancer Metastasis Suppressor 1

Function

Transcriptional repressor. Down-regulates transcription activation by NF-kappa-B by promoting the deacetylation of RELA at 'Lys-310'. Promotes HDAC1 binding to promoter regions. Down-regulates expression of anti-apoptotic genes that are controlled by NF-kappa-B. Promotes apoptosis in cells that have inadequate adherence to a substrate, a process called anoikis, and may thereby inhibit metastasis. May be a mediator of metastasis suppression in breast carcinoma.

Biological Process

Apoptotic process Source: UniProtKB-KW
Histone deacetylation Source: GO_Central
Negative regulation of NF-kappaB transcription factor activity Source: UniProtKB
Negative regulation of transcription, DNA-templated Source: UniProtKB
Negative regulation of transcription by RNA polymerase II Source: GO_Central
Positive regulation of anoikis Source: UniProtKB
Positive regulation of protein deacetylation Source: UniProtKB
Regulation of apoptotic process Source: UniProtKB

Cellular Location

Nucleus; Cytoplasm. Predominantly nuclear.

PTM

Ubiquitinated by a cullin-RING-based BCR (BTB-CUL3-RBX1) E3 ubiquitin-protein ligase complex containing SPOP, leading to proteasomal degradation.