In humans, these structures are composed of a series of GGGTTA repeats, and they solve the end replication problem.
Tankyrase proteins modify proteins that in turn regulate these structures. Sheltrin complexes obscure these structures so that they are not affected by a cell's repair pathways. Dyskeratosis congenita is caused by a body's inability to regulate these structures. These structures determine a cell's Hayflick limit. The active site of an enzyme named after these structures is called its "palm," and that enzyme functions as a reverse transcriptase to lengthen these structures. In humans, these structures are composed of a series of GGGTTA repeats, and they solve the end replication problem. For 10 points, name these segments of DNA found at the tips of chromosomes.
Tankyrase proteins modify proteins that in turn regulate these structures.
telomeres