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Crystal structure of Tetrahymena p45N and p19Crystal structure of Tetrahymena p45N and p19
Structural highlights
Publication Abstract from PubMedTetrahymena telomerase holoenzyme subunits p75, p45 and p19 form a subcomplex (7-4-1) peripheral to the catalytic core. We report structures of p45 and p19 and reveal them as the Stn1 and Ten1 subunits of the CST complex, which stimulates telomerase complementary-strand synthesis. 7-4-1 binds telomeric single-stranded DNA, and mutant p19 overexpression causes telomere 3'-overhang elongation. We propose that telomerase-tethered Tetrahymena CST coordinates telomere G-strand and C-strand synthesis. The Tetrahymena telomerase p75-p45-p19 subcomplex is a unique CST complex.,Wan B, Tang T, Upton H, Shuai J, Zhou Y, Li S, Chen J, Brunzelle JS, Zeng Z, Collins K, Wu J, Lei M Nat Struct Mol Biol. 2015 Nov 9. doi: 10.1038/nsmb.3126. PMID:26551074[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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