trt-1 is the Caenorhabditis elegans catalytic subunit of telomerase.

Bettina Meier, Iuval Clejan, Yan Liu, Mia Lowden, Anton Gartner, Jonathan Hodgkin, Shawn Ahmed

PLoS genetics 2006 Feb

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Mutants of trt-1, the Caenorhabditis elegans telomerase reverse transcriptase, reproduce normally for several generations but eventually become sterile as a consequence of telomere erosion and end-to-end chromosome fusions. Telomere erosion and uncapping do not cause an increase in apoptosis in the germlines of trt-1 mutants. Instead, late-generation trt-1 mutants display chromosome segregation defects that are likely to be the direct cause of sterility. trt-1 functions in the same telomere replication pathway as mrt-2, a component of the Rad9/Rad1/Hus1 (9-1-1) proliferating cell nuclear antigen-like sliding clamp. Thus, the 9-1-1 complex may be required for telomerase to act at chromosome ends in C. elegans. Although telomere erosion limits replicative life span in human somatic cells, neither trt-1 nor telomere shortening affects postmitotic aging in C. elegans. These findings illustrate effects of telomere dysfunction in C. elegans mutants lacking the catalytic subunit of telomerase, trt-1.

Citation

Bettina Meier, Iuval Clejan, Yan Liu, Mia Lowden, Anton Gartner, Jonathan Hodgkin, Shawn Ahmed. trt-1 is the Caenorhabditis elegans catalytic subunit of telomerase. PLoS genetics. 2006 Feb;2(2):e18