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Deprecated: Implicit conversion from float 261.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Epigenetics+Chromatin 2017 ; 10 (ä): ä Nephropedia Template TP
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Ubiquitin C-terminal hydrolase isozyme L1 is associated with shelterin complex at interstitial telomeric sites #MMPMID29126443
Ilic A; Lu S; Bhatia V; Begum F; Klonisch T; Agarwal P; Xu W; Davie JR
Epigenetics Chromatin 2017[]; 10 (ä): ä PMID29126443show ga
Background: Ubiquitin C-terminal hydrolase isozyme L1 (UCHL1) is primarily expressed in neuronal cells and neuroendocrine cells and has been associated with various diseases, including many cancers. It is a multifunctional protein involved in deubiquitination, ubiquitination and ubiquitin homeostasis, but its specific roles are disputed and still generally undetermined. Results: Herein, we demonstrate that UCHL1 is associated with genomic DNA in certain prostate cancer cell lines, including DU 145 cells derived from a brain metastatic site, and in HEK293T embryonic kidney cells with a neuronal lineage. Chromatin immunoprecipitation and sequencing revealed that UCHL1 localizes to TTAGGG repeats at telomeres and interstitial telomeric sequences, as do TRF1 and TRF2, components of the shelterin complex. A weak or transient interaction between UCHL1 and the shelterin complex was confirmed by immunoprecipitation and proximity ligation assays. UCHL1 and RAP1, also known as TERF2IP and a component of the shelterin complex, were bound to the nuclear scaffold. Conclusions: We demonstrated a novel feature of UCHL1 in binding telomeres and interstitial telomeric sites. Electronic supplementary material: The online version of this article (10.1186/s13072-017-0160-2) contains supplementary material, which is available to authorized users.