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| 文献 | ||
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| 著者 | Heller-Uszynska,K., Schnippenkoetter,W. and Kilian,A. | |
| タイトル | Cloning and characterization of rice (Oryza sativa L) telomerase reverse transcriptase, which reveals complex splicing patterns. | |
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Abstract: Plant chromosomes terminate in telomeres as in other eukaryotes. Telomeres are vital to genome stability and their malfunctioning is lethal. One of the core components of the telomere complex is telomerase. The enzyme activity depends on RNA (TER) and reverse transcriptase (TERT) subunits. We describe here the isolation, sequencing and characterization of the telomerase reverse transcriptase catalytic subunit from the monocot plant Oryza sativa L. (OsTERT). A single copy of this gene is present in the rice genome. The protein predicted from the OsTERT sequence has all the signature motifs of the TERT family members. Our data indicate that rice telomerase activity is developmentally regulated and is high in in vitro tissue and cell culture. However, steady-state transcript levels of the TERT gene do not seem to correlate with enzyme activity. Northern and RT-PCR analyses of the OsTERT gene transcript profile show multiple differentially spliced transcripts in both telomerase-positive and telomerase-negative tissues. Based on quantitative analysis of these transcripts, we speculate that the overall balance between the quantities of particular alternatively spliced transcripts may determine whether the TERT protein(s) is active or not. The diversity of splicing variants detected suggests that, as recently discovered for mammalian TERT proteins, rice TERT protein variants may perform functions other than telomere maintenance. |
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| 掲載誌 | Plant J. | |
| Country | Australia | |
| 刊数 | 31(1) | |
| ページ | 75-86 | |
| 発刊年 | 2002 | |
| PubMed ID | 12100484 | |
| PubMed Central ID | - | |
| DOI | 10.1046/j.1365-313X.2001.01337.x | |
| URL | - | |
| 関連情報 | ||
| 遺伝子 | TERT | |
| INSD | AF494453 | |
| 系統 |
野生イネ コアコレクション |
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| 突然変異系統(遺伝研 Collection) | - | |
| 種子不稔系統 | - | |
| 致死変異体系統 | - | |
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組織別発生段階 - 突然変異系統(遺伝子) |
- | |
| 栽培イネ品種(遺伝研 Collection) | - | |
| 組織別発生段階 | - | |
