The transcription unit architecture of the Escherichia coli genome.

The transcription unit architecture of the Escherichia coli genome.
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DOI:
10.1038/nbt.1582
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发表时间:
2009-11
影响因子:
46.9
通讯作者:
Palsson, Bernhard O.
Palsson, Bernhard O.
中科院分区:
工程技术1区
文献类型:
--
作者:
Cho, Byung-Kwan;Zengler, Karsten;Qiu, Yu;Park, Young Seoub;Knight, Eric M.;Barrett, Christian L.;Gao, Yuan;Palsson, Bernhard O.

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细菌基因组是根据结构和功能成分来组织的。这些组件包括启动子,转录开始和终止位点,开放阅读框架,调节性非编码区域,未翻译区域和转录单元,共同构成了基因组功能组织。在这里,我们使用一种系统方法,该方法在基因组尺度上迭代整合了多个高通量测量值,以识别大肠杆菌K-12 MG1655基因组的组织结构。组织组件的集成提供实验注释的转录单元(TU)体系结构,包括替代转录起始站点,启动子结构,边界和开放式阅读框架。总共确定了4,661个TU,比当前知识的增加> 530%。这种全面的TU结构允许在基因组规模上阐明条件特定的Sigma因子的特定用途。此外,TU架构为基因组规模转录和转化调节网络提供了基础。
Bacterial genomes are organized in terms of structural and functional components. These components include promoters, transcription start and termination sites, open reading frames, regulatory non-coding regions, untranslated regions and transcription units, that together comprise the functional organization of a genome. Here, we use a systems approach that iteratively integrates multiple high-throughput measurements at a genome-scale to identify the organizational structure of the Escherichia coli K-12 MG1655 genome. Integration of the organizational components provides experimentally annotated transcription unit (TU) architecture, including alternative transcription start sites, promoter structures, boundaries and open reading frames. A total of 4,661 TUs were identified, representing an increase of > 530% over current knowledge. This comprehensive TU architecture allows for the elucidation of condition-specific uses of alternative sigma factors at the genome-scale. Furthermore, the TU architecture provides a foundation on which genome-scale transcriptional and translational regulatory networks are based.
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