| Autor: |
Garg, Mansi, Gurung, Resham L, Mansoubi, Sahar, Ahmed, Jubed O, Davé, Anoushka, Watts, Felicity Z, Bianchi, Alessandro |
| Zdroj: |
EMBO Reports; Aug2014, Vol. 15 Issue 8, p871-877, 7p |
| Abstrakt: |
Elongation of the telomeric overhang by telomerase is counteracted by synthesis of the complementary strand by the CST complex, CTC1(Cdc13)/Stn1/Ten1. Interaction of budding yeast Stn1 with overhang-binding Cdc13 is increased by Cdc13 SUMOylation. Human and fission yeast CST instead interact with overhang-binding TPP1/ POT1. We show that the fission yeast TPP1 ortholog, Tpz1, is SUMOylated. Tpz1 SUMOylation restricts telomere elongation and promotes Stn1/Ten1 telomere association, and a SUMO-Tpz1 fusion protein has increased affinity for Stn1. Our data suggest that SUMO inhibits telomerase through stimulation of Stn1/Ten1 action by Tpz1, highlighting the evolutionary conservation of the regulation of CST function by SUMOylation. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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