RUNX3

Runt-related transcription factor 3 is a protein that in humans is encoded by the RUNX3 gene.

This gene encodes a member of the runt domain-containing family of transcription factors. A heterodimer of this protein and a beta subunit forms a complex that binds to the core DNA sequence 5'-YGYGGT-3' found in a number of enhancers and promoters, and can either activate or suppress transcription. It also interacts with other transcription factors. It functions as a tumor suppressor, and the gene is frequently deleted or transcriptionally silenced in cancer. Multiple transcript variants encoding different isoforms have been found for this gene.

In melanocytic cells RUNX3 gene expression may be regulated by MITF.

Knockout mouse

Runx3 null mouse gastric mucosa exhibits hyperplasia due to stimulated proliferation and suppressed apoptosis in epithelial cells, and the cells are resistant to TGF-beta stimulation.

Interactions

RUNX3 has been shown to interact with TLE1.

See also