Binds specifically to the plant telomeric double-stranded DNA sequences 5'-TTTAGGG-3'. At least 2 repeats of telomeric sequences are required for binding. Induces DNA bending. Homomultimer. Interacts with SNL1 (via PAH2). Interacts with STO. Expressed ubiquitously. Highest expression in flowers and roots. By salt stress. The Myb-extension domain (593-622) is critical for telomere binding. Viable, but deregulation of telomere length control.