UniProt Summary: Telomere-binding protein that acts as a regulator of telomere length (PubMed:28500257, PubMed:28082411). Directly binds the telomeric double-stranded 5'-TTAGGG-3' repeat (PubMed:28500257, PubMed:28082411). Preferentially binds to telomeres that have a low concentration of shelterin complex and acts as a regulator of telomere length by initiating telomere trimming, a process that prevents the accumulation of aberrantly long telomeres (PubMed:28082411). Also acts as a transcription regulator that binds to promoter regions (PubMed:7969177, PubMed:24382891, PubMed:28500257). Regulates expression of a small subset of genes, including MTFP1 (PubMed:28500257). Regulates expression the J and/or S elements in MHC II promoter (PubMed:7969177). Acts as a negative regulator of cell proliferation by specifically activating expression of ARF, a tumor suppressor isoform of CDKN2A (PubMed:24382891). {ECO:0000269|PubMed:24382891, ECO:0000269|PubMed:28082411, ECO:0000269|PubMed:28500257, ECO:0000269|PubMed:7969177}.
Pfam DomainsGO Terms
Pfam Domains
BTB
GO Terms
double-stranded telomeric DNA binding
telomere maintenance via telomere lengthening
chromosome, telomeric region
telomere maintenance
telomere organization
transcription regulatory region DNA binding
anatomical structure homeostasis
DNA-binding transcription factor activity
DNA metabolic process
chromosome organization
identical protein binding
positive regulation of transcription, DNA-templated