生物
端粒酶
端粒酶逆转录酶
核糖核酸
端粒酶RNA组分
端粒
细胞生物学
分子生物学
生物化学
基因
作者
Maria P. Rubtsova,Yulia Naraykina,D. P. Vasilkova,Mark Meerson,Maria I. Zvereva,Vladimir Prassolov,Lazarev Vn,Valentin A. Manuvera,Sergey I. Kovalchuk,Nikolay A. Anikanov,Ivan Butenko,Olga V. Pobeguts,Vadim Govorun,О. А. Донцова
摘要
Several studies have described functional peptides encoded in RNA that are considered to be noncoding. Telomerase RNA together with telomerase reverse transcriptase and regulatory proteins make up the telomerase complex, the major component of the telomere length-maintaining machinery. In contrast to protein subunits, telomerase RNA is expressed constitutively in most somatic cells where telomerase reverse transcriptase is absent. We show here that the transcript of human telomerase RNA codes a 121 amino acid protein (hTERP). The existence of hTERP was shown by immunoblotting, immunofluorescence microscopy and mass spectroscopy. Gain-of-function and loss-of-function experiments showed that hTERP protects cells from drug-induced apoptosis and participates in the processing of autophagosome. We suggest that hTERP regulates crosstalk between autophagy and apoptosis and is involved in cellular adaptation under stress conditions.
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