Garg, Mansi, Gurung, Resham L, Mansoubi, Sahar, Ahmed, Jubed O, Davé, Anoushka, Watts, Felicity Z and Bianchi, Alessandro (2014) Tpz1TPP1 SUMOylation reveals evolutionary conservation of SUMO-dependent Stn1 telomere association. EMBO Reports. ISSN 1469-3178
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Abstract
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.
Item Type: | Article |
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Additional Information: | Keywords: CST; Stn1; telomeres; Tpz1; SUMO |
Schools and Departments: | School of Life Sciences > Sussex Centre for Genome Damage and Stability |
Subjects: | Q Science > QD Chemistry > QD0241 Organic chemistry > QD0415 Biochemistry |
Depositing User: | Gee Wheatley |
Date Deposited: | 11 Jul 2014 09:10 |
Last Modified: | 23 Jul 2020 09:20 |
URI: | http://srodev.sussex.ac.uk/id/eprint/49241 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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Analysis of regulation telomerase action & telomore capping function by the telomeric complex (Fellow: Bianchi) | G0129 | MRC-MEDICAL RESEARCH COUNCIL | G0701428 |