DMTF1

This gene encodes a transcription factor that contains a cyclin D-binding domain, three central Myb-like repeats, and two flanking acidic transactivation domains at the N- and C-termini. The encoded protein is induced by the oncogenic Ras signaling pathway and functions as a tumor suppressor by activating the transcription of ARF and thus the ARF-p53 pathway to arrest cell growth or induce apoptosis. It also activates the transcription of aminopeptidase N and may play a role in hematopoietic cell differentiation. The transcriptional activity of this protein is regulated by binding of D-cyclins. This gene is hemizygously deleted in approximately 40% of human non-small-cell lung cancer and is a potential prognostic and gene-therapy target for non-small-cell lung cancer. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq]

Full Name

DMTF1

Function

Transcriptional activator which activates the CDKN2A/ARF locus in response to Ras-Raf signaling, thereby promoting p53/TP53-dependent growth arrest (By similarity).

Binds to the consensus sequence 5'-CCCG[GT]ATGT-3' (By similarity).

Isoform 1 may cooperate with MYB to activate transcription of the ANPEP gene. Isoform 2 may antagonize transcriptional activation by isoform 1.

Biological Process

Cell cycle Source: UniProtKB-KW
Regulation of transcription, DNA-templated Source: GO_Central
Regulation of transcription by RNA polymerase II Source: GO_Central

Cellular Location

Nucleus

PTM

Phosphorylated by the cyclin-D2/CDK4, cyclin-D3/CDK4 and cyclin-D2/CDK6 complexes and to a lesser extent by the cyclin-D1/CDK4 complex.