a telomeric repeat binding factor. Binds the telomeric double-stranded TTAGGG repeat and negatively regulates telomere length. Colocalizes with telomeric DNA in interphase and metaphase cells and is located at chromosome ends during metaphase. Involved in the regulation of the mitotic spindle. Expression is tightly regulated during the cell cycle; levels are low in G1 and S phase and increase during G2 phase and mitosis. Two splice variant isoforms have been described. Note: This description may include information from UniProtKB.
Molecular Function: identical protein binding; protein binding; protein homodimerization activity; DNA binding; protein heterodimerization activity; microtubule binding; telomeric DNA binding; double-stranded telomeric DNA binding; caspase activator activity; chromatin binding; DNA bending activity
Biological Process: response to drug; caspase activation; mitosis; positive regulation of mitosis; negative regulation of telomere maintenance via semi-conservative replication; positive regulation of microtubule polymerization; telomere maintenance via telomerase; positive regulation of mitotic cell cycle; negative regulation of telomerase activity; cell division; negative regulation of DNA replication; mitotic cell cycle spindle assembly checkpoint; induction of apoptosis; G2/M transition of mitotic cell cycle; age-dependent telomere shortening; telomere maintenance; negative regulation of telomere maintenance via telomerase; protein homooligomerization
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.