Identification and characterization of the DNA replication origin recognition complex gene family in the silkworm Bombyx mori

文献类型: 外文期刊

第一作者: Yang, Hui-Peng

作者: Yang, Hui-Peng;Zhang, Yao-Zhou;Yang, Hui-Peng;Luo, Su-Juan;Li, Yi-Nu;Zhang, Zhi-Fang

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关键词: Expression pattern;Gene clone;Origin recognition complex (ORC);Reverse transcription-PCR (RT-PCR);Silkworm

期刊名称:BIOSCIENCE REPORTS ( 影响因子:3.84; 五年影响因子:4.059 )

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收录情况: SCI

摘要: The ORC (origin recognition complex) binds to the DNA replication origin and recruits other replication factors to form the pre-replication complex. The cDNA and genomic sequences of all six subunits of ORC in Bombyx mori (BmORC1-6) were determined by RACE (rapid amplification of cDNA ends) and bioinformatic analysis. The conserved domains were identified in BmOrc1p-6p and the C-terminal of BmOrc6p features a short sequence that may be specific for Lepidoptera. As in other organisms, each of the six BmORC subunits had evolved individually from ancestral genes in early eukaryotes. During embryo development, the six genes were co-regulated, but different ratios of the abundance of mRNAs were observed in 13 tissues of the fifth instar day-6 larvae. Infection by BmNPV (B. mori nucleopolyhedrovirus) initially decreased and then increased the abundance of BmORC. We suggest that some of the BmOrc proteins may have additional functions and that BmOrc proteins participate in the replication of BmNPV.

分类号: Q

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