The making of a slicer: activation of human Argonaute-1.
The making of a slicer: activation of human Argonaute-1.
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DOI:
10.1016/j.celrep.2013.05.033
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发表时间:
2013-06-27
期刊:
影响因子:
8.8
通讯作者:
Joshua-Tor L
中科院分区:
文献类型:
--
作者:
Faehnle CR;Elkayam E;Haase AD;Hannon GJ;Joshua-Tor L
Argonautes are the central protein component in small RNA silencing pathways. Of the four human Argonautes (hAgo1–4) only hAgo2 is an active slicer. We determined the structure of hAgo1 bound to endogenous copurified RNAs to 1.75 Å resolution and hAgo1 loaded with let-7 miRNA to 2.1 Å. Both structures are strikingly similar to the structures of hAgo2. A conserved catalytic tetrad within the PIWI domain of hAgo2 is required for its slicing activity. Completion of the tetrad combined with a mutation on a loop adjacent to the active site of hAgo1 results in slicer activity that is substantially enhanced by swapping in the N domain of hAgo2. hAgo3, with an intact tetrad, becomes an active slicer by swapping the N domain of hAgo2, without additional mutations. Intriguingly, the elements that make Argonaute an active slicer involve a sophisticated interplay between the active site and more distant regions of the enzyme.
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影响因子:
64.5
作者:
Elkayam E;Kuhn CD;Tocilj A;Haase AD;Greene EM;Hannon GJ;Joshua-Tor L
通讯作者:
Joshua-Tor L
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
7.2
作者:
Joshua-Tor, Leemor;Hannon, Gregory J.
通讯作者:
Hannon, Gregory J.
影响因子:
10.5
作者:
Martinez, J;Tuschl, T
通讯作者:
Tuschl, T
影响因子:
56.9
作者:
Liu, JD;Carmell, MA;Hannon, GJ
通讯作者:
Hannon, GJ