Molecular cloning and characterization of the Dicer-like 2 gene from Brassica rapa

Molecular cloning and characterization of the Dicer-like 2 gene from Brassica rapa
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白菜 Dicer-like 2 基因的分子克隆和表征

DOI:
10.1007/s11033-008-9310-8
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发表时间:
2009-07
期刊:
Molecular Biology Reports, (SCI-IF=2.04),2010
影响因子:
--
通讯作者:
陈剑平
陈剑平
中科院分区:
其他
文献类型:
--
作者:
陈剑平

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Dicer样蛋白(DCL)参与小RNA介导的植物发育和病毒防御。在模式植物中,至少发现了四种DCL,许多研究有助于了解它们的功能。然而,Dicer或DCL在其他植物中的功能仍然不清楚。在这里,我们报告的全长cDNA序列的白菜ssp。中华绒螯蟹DCL 2(BrDCL 2)基因,包含一个4,179 bp的开放阅读框(ORF),编码1,392个氨基酸的蛋白质。在BrDCL 2的3'端发现了3个不同长度的3'非翻译区克隆,并克隆了一个在外显子9和外显子10之间保留一个内含子的选择性剪接变体BrDCL 2sv。由于编码序列的改变导致了一个过早的末端密码子,因此预期BrDCL 2sv将翻译一个含有整个DEXHc结构域的短肽。
Dicer-like proteins (DCLs) are involved in small RNA-mediated development and viral defense in plants. In model plants, at least four DCLs have been found and a number of studies have helped to understand their function. However, the function of the Dicer or DCLs in other plants is still unclear. Here, we report the full-length cDNA sequence of Brassica rapa ssp. chinensis DCL2 (BrDCL2) gene, which contains a 4,179 bp open reading frame (ORF) encoding a protein of 1,392 amino acids. At the 3' end of BrDCL2, clones with three different lengths of 3' untranslated region were found. An alternative splice variant of BrDCL2, BrDCL2sv, in which one intron was retained between exon9 and exon10, was also cloned. Because of a change in the coding sequence resulting in a premature terminal codon, BrDCL2sv was expected to translate a short peptide containing the whole DEXHc domain.
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发表时间: 2004-08-01
影响因子: 3.5
作者:
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