Structural and functional insights into human Tudor-SN, a key component linking RNA interference and editing.
Structural and functional insights into human Tudor-SN, a key component linking RNA interference and editing.
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DOI:
10.1093/nar/gkn236
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发表时间:
2008-06
影响因子:
14.9
通讯作者:
Yuan HS
中科院分区:
文献类型:
--
作者:
Li CL;Yang WZ;Chen YP;Yuan HS
Human Tudor-SN is involved in the degradation of hyper-edited inosine-containing microRNA precursors, thus linking the pathways of RNA interference and editing. Tudor-SN contains four tandem repeats of staphylococcal nuclease-like domains (SN1–SN4) followed by a tudor and C-terminal SN domain (SN5). Here, we showed that Tudor-SN requires tandem repeats of SN domains for its RNA binding and cleavage activity. The crystal structure of a 64-kD truncated form of human Tudor-SN further shows that the four domains, SN3, SN4, tudor and SN5, assemble into a crescent-shaped structure. A concave basic surface formed jointly by SN3 and SN4 domains is likely involved in RNA binding, where citrate ions are bound at the putative RNase active sites. Additional modeling studies provide a structural basis for Tudor-SN's preference in cleaving RNA containing multiple I·U wobble-paired sequences. Collectively, these results suggest that tandem repeats of SN domains in Tudor-SN function as a clamp to capture RNA substrates.
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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
影响因子:
64.8
作者:
Mello, CC;Conte, D
通讯作者:
Conte, D
影响因子:
5.3
作者:
PATTERSON, JB;SAMUEL, CE
通讯作者:
SAMUEL, CE
影响因子:
11.8
作者:
Low, SH;Vasanth, S;Weimbs, T
通讯作者:
Weimbs, T
DOI:
10.1107/s0907444998003254
发表时间:
1998-09-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION D-BIOLOGICAL CRYSTALLOGRAPHY
影响因子:
--
作者:
Brunger, AT;Adams, PD;Warren, GL
通讯作者:
Warren, GL