Decoding human cytomegalovirus.
Decoding human cytomegalovirus.
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DOI:
10.1126/science.1227919
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发表时间:
2012-11-23
期刊:
影响因子:
--
通讯作者:
Weissman JS
中科院分区:
文献类型:
--
作者:
Stern-Ginossar N;Weisburd B;Michalski A;Le VT;Hein MY;Huang SX;Ma M;Shen B;Qian SB;Hengel H;Mann M;Ingolia NT;Weissman JS
The human cytomegalovirus (HCMV) genome was sequenced 20 years ago. However, like other complex viruses, our understanding of its protein coding potential is far from complete. Here we use ribosome profiling and transcript analysis to experimentally define the HCMV translation products and follow their temporal expression. We identified hundreds of previously unidentified open reading frames and confirmed a fraction by mass spectrometry. We found that regulated use of alternative transcript start sites plays a broad role in enabling tight temporal control of HCMV protein expression and allowing multiple distinct polypeptides to be generated from a single genomic locus. Our results reveal an unanticipated complexity to the HCMV coding capacity and illustrate the role of regulated changes in transcript start sites in generating this complexity.
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