Researchers at the University of Illinois at Chicago College of Medicine describe for the first time a key target of DNA damage checkpoint enzymes that must be chemically modified to enable stable maintenance of chromosome ends by telomerase, an enzyme thought to play a key role in cancer and aging. Their findings are reported online in Nature Structural and Molecular Biology. Telomeres are the natural ends of chromosomes, consisting of specialized DNA-and-protein structures that protect chromosome ends and ensure faithful duplication of chromosomes in actively dividing cells...
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