Structural and functional analysis of Utp24, an endonuclease for processing 18S ribosomal RNA.
Structural and functional analysis of Utp24, an endonuclease for processing 18S ribosomal RNA.
复制标题
Utp24(一种用于处理 18S 核糖体 RNA 的核酸内切酶)的结构和功能分析。
DOI:
10.1371/journal.pone.0195723
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发表时间:
2018
期刊:
影响因子:
3.7
通讯作者:
Ye K
中科院分区:
文献类型:
--
作者:
An W;Du Y;Ye K
The precursor ribosomal RNA is processed by multiple steps of nucleolytic cleavage to generate mature rRNAs. Utp24 is a PIN domain endonuclease in the early 90S precursor of small ribosomal subunit and is proposed to cleave at sites A1 and A2 of pre-rRNA. Here we determine the crystal structure of Utp24 from Schizosaccharomyces pombe at 2.1 angstrom resolution. Utp24 structurally resembles the ribosome assembly factor Utp23 and both contain a Zn-finger motif. Functional analysis in Saccharomyces cerevisiae shows that depletion of Utp24 disturbs the assembly of 90S and abolishes cleavage at sites A0, A1 and A2. The 90S assembled with inactivated Utp24 is arrested at a post-A0-cleavage state and contains enriched nuclear exosome for degradation of 5' ETS. Despite of high sequence conservation, Utp24 from other organisms is unable to form an active 90S in S. cerevisiae, suggesting that Utp24 needs to be precisely positioned in 90S. Our study provides biochemical and structural insight into the role of Utp24 in 90S assembly and activity.
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影响因子:
9.8
作者:
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通讯作者:
Koš M
影响因子:
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作者:
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Ye K
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7.3
作者:
Henras, Anthony K.;Plisson-Chastang, Celia;O'Donohue, Marie-Francoise;Chakraborty, Anirban;Gleizes, Pierre-Emmanuel
通讯作者:
Gleizes, Pierre-Emmanuel
影响因子:
14.9
作者:
Pérez-Fernández J;Martín-Marcos P;Dosil M
通讯作者:
Dosil M
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K