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Telomerase structures and regulation: shedding light on the chromosome end.
Current Opinion in Structural Biology ( IF 7.052 ) Pub Date : 2019-06-16 , DOI: 10.1016/j.sbi.2019.04.009
Thi Hoang Duong Nguyen,Kathleen Collins,Eva Nogales

During genome replication, telomerase adds repeats to the ends of chromosomes to balance the loss of telomeric DNA. The regulation of telomerase activity is of medical relevance, as it has been implicated in human diseases such as cancer, as well as in aging. Until recently, structural information on this enzyme that would facilitate its clinical manipulation had been lacking due to telomerase very low abundance in cells. Recent cryo-EM structures of both the human and Tetrahymena thermophila telomerases have provided a picture of both the shared catalytic core of telomerase and its interaction with species-specific factors that play different roles in telomerase RNP assembly and function. We discuss also progress toward an understanding of telomerase RNP biogenesis and telomere recruitment from recent studies.
更新日期:2019-11-01

 

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