共查询到20条相似文献,搜索用时 78 毫秒
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Bringaud F Biteau N Zuiderwijk E Berriman M El-Sayed NM Ghedin E Melville SE Hall N Baltz T 《Molecular biology and evolution》2004,21(3):520-528
The ingi (long and autonomous) and RIME (short and nonautonomous) non--long-terminal repeat retrotransposons are the most abundant mobile elements characterized to date in the genome of the African trypanosome Trypanosoma brucei. These retrotransposons were thought to be randomly distributed, but a detailed and comprehensive analysis of their genomic distribution had not been performed until now. To address this question, we analyzed the ingi/RIME sequences and flanking sequences from the ongoing T. brucei genome sequencing project (TREU927/4 strain). Among the 81 ingi/RIME elements analyzed, 60% are complete, and 7% of the ingi elements (approximately 15 copies per haploid genome) appear to encode for their own transposition. The size of the direct repeat flanking the ingi/RIME retrotransposons is conserved (i.e., 12-bp), and a strong 11-bp consensus pattern precedes the 5'-direct repeat. The presence of a consensus pattern upstream of the retroelements was confirmed by the analysis of the base occurrence in 294 GSS containing 5'-adjacent ingi/RIME sequences. The conserved sequence is present upstream of ingis and RIMEs, suggesting that ingi-encoded enzymatic activities are used for retrotransposition of RIMEs, which are short nonautonomous retroelements. In conclusion, the ingi and RIME retroelements are not randomly distributed in the genome of T. brucei and are preceded by a conserved sequence, which may be the recognition site of the ingi-encoded endonuclease. 相似文献
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Identification of Arabidopsis genic and non‐genic promoters by paired‐end sequencing of TSS tags
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Mutsutomo Tokizawa Kazutaka Kusunoki Hiroyuki Koyama Atsushi Kurotani Tetsuya Sakurai Yutaka Suzuki Tomoaki Sakamoto Tetsuya Kurata Yoshiharu Y. Yamamoto 《The Plant journal : for cell and molecular biology》2017,90(3):587-605
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Bidirectionalization of polar promoters in plants. 总被引:12,自引:0,他引:12
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Procyclic acidic repetitive protein (PARP) genes located in an unusually small alpha-amanitin-resistant transcription unit: PARP promoter activity assayed by transient DNA transfection of Trypanosoma brucei. 总被引:31,自引:8,他引:23
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G Rudenko S Le Blancq J Smith M G Lee A Rattray L H Van der Ploeg 《Molecular and cellular biology》1990,10(7):3492-3504
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