A human telomerase holoenzyme protein required for Cajal body localization and telomere synthesis.
A human telomerase holoenzyme protein required for Cajal body localization and telomere synthesis.
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DOI:
10.1126/science.1165357
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发表时间:
2009-01-30
期刊:
影响因子:
--
通讯作者:
Artandi SE
中科院分区:
文献类型:
--
作者:
Venteicher AS;Abreu EB;Meng Z;McCann KE;Terns RM;Veenstra TD;Terns MP;Artandi SE
Telomerase is a ribonucleoprotein (RNP) complex that synthesizes telomere repeats in tissue progenitor cells and cancer cells. Active human telomerase consists of at least three principal subunits, including the telomerase reverse transcriptase (TERT), the telomerase RNA (TERC), and dyskerin. Here, we identify a holoenzyme subunit, TCAB1 (telomerase Cajal body protein1), uniquely enriched in Cajal bodies, nuclear sites of RNP processing important for telomerase function. TCAB1 associates with active telomerase enzyme, with established telomerase components, and with small Cajal body RNAs involved in modifying splicing RNAs. Depletion of TCAB1 using RNA interference prevents TERC from associating with Cajal bodies, disrupts telomerase-telomere association and abrogates telomere synthesis by telomerase. Thus, TCAB1 controls telomerase trafficking and is required for telomere synthesis in human cancer cells.
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影响因子:
14.9
作者:
Schnapp, G;Rodi, HP;Damm, K
通讯作者:
Damm, K
DOI:
10.1083/jcb.127.6.1505
发表时间:
1994-12
期刊:
The Journal of cell biology
影响因子:
--
作者:
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通讯作者:
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影响因子:
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作者:
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通讯作者:
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作者:
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通讯作者:
Artandi, Steven E.
影响因子:
3.3
作者:
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通讯作者:
Terns, MP