求翻译：复制起始位点识别复合物（ORC）由六个异源亚基组成，是调控DNA复制起始的关键蛋白。已有研究表明ORC在基因转录沉默、姐妹染色体粘连、细胞周期调控等细胞过程中也起着重要作用，而ORC的分子尚有不少分子机理有待解析，真核ORC的结构解析也因此成为许多生物学家努力的目标。本文为ORC的结构解析做了许多奠基性工作。首先，本文构建了果蝇ORC复合物的昆虫表达体系，并且通过western检测验证了果蝇ORC的表达。同时，由于果蝇ORC3亚基拥有许多独特性质又缺乏同源结构，本文设计了一系列该亚基的截短体，并通过表达纯化获得了较高纯度的截短体蛋白。是什么意思？

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Duplication outset position spot recognition compound (ORC) is composed by six different source Asia base, is regulates the DNA duplication outset the essential protein.Had the research to indicate ORC in the gene duplication silence, sisters cell processes and so on in chromosome adhesion, cell cyc

Copy of origin recognition complex (ORC) subunit composition consists of six different source, are critical to regulation of DNA replication initiation protein. Has research indicates that ORC in adhesion gene Transcriptional Silencing, sister chromosomes, cell cycle cell process also play important

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