Comprehensive molecular structure of the eukaryotic ribosome.
Comprehensive molecular structure of the eukaryotic ribosome.
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DOI:
10.1016/j.str.2009.09.015
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发表时间:
2009-12-09
期刊:
影响因子:
--
通讯作者:
Frank J
中科院分区:
文献类型:
--
作者:
Taylor DJ;Devkota B;Huang AD;Topf M;Narayanan E;Sali A;Harvey SC;Frank J
Despite the emergence of a large number of X-ray crystallographic models of the bacterial 70S ribosome over the past decade, an accurate atomic model of the eukaryotic 80S ribosome is still not available. Eukaryotic ribosomes possess more ribosomal proteins and ribosomal RNA than bacterial ribosomes, which are implicated in extra-ribosomal functions in the eukaryotic cells. By combining cryo-EM with RNA and protein homology modeling, we obtained an atomic model of the yeast 80S ribosome complete with all ribosomal RNA expansion segments and all ribosomal proteins for which a structural homolog can be identified. Mutation or deletion of 80S ribosomal proteins can abrogate maturation of the ribosome, leading to several human diseases. We have localized one such protein unique to eukaryotes, rpS19e, whose mutations are associated with Diamond-Blackfan anemia in humans. Additionally, we characterize crucial and novel interactions between the dynamic stalk base of the ribosome with eukaryotic elongation factor 2.
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影响因子:
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作者:
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通讯作者:
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DOI:
10.1073/pnas.0607541103
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