Two-site recognition of phosphatidylinositol 3-phosphate by PROPPINs in autophagy.
Two-site recognition of phosphatidylinositol 3-phosphate by PROPPINs in autophagy.
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DOI:
10.1016/j.molcel.2012.05.027
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发表时间:
2012-08-10
期刊:
影响因子:
16
通讯作者:
Hurley, James H.
中科院分区:
文献类型:
--
作者:
Baskaran, Sulochanadevi;Ragusa, Michael J.;Boura, Evzen;Hurley, James H.
Macroautophagy is essential to cell survival during starvation and proceeds by the growth of a double-membraned phagophore, which engulfs cytosol and other substrates. The synthesis and recognition of the lipid phosphatidylinositol 3-phosphate (PI(3)P) is essential for autophagy. The key autophagic PI(3)P sensors, which are conserved from yeast to humans, belong to the PROPPIN family. Here we report the crystal structure of the yeast PROPPIN Hsv2. The structure consists of a seven-bladed β-propeller, and unexpectedly, contains two pseudo-equivalent PI(3)P binding sites on blades 5 and 6. These two sites both contribute to membrane binding in vitro and are collectively required for full autophagic function in yeast. These sites function in concert with membrane binding by a hydrophobic loop in blade 6, explaining the specificity of the PROPPINs for membrane-bound PI(3)P. These observations thus provide a structural and mechanistic framework for one of the conserved central molecular recognition events in autophagy.
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影响因子:
44.1
作者:
通讯作者:
--
影响因子:
4.8
作者:
Meiling-Wesse, K;Barth, H;Thumm, M
通讯作者:
Thumm, M
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:
3.3
作者:
Jeffries, TR;Dove, SK;Parker, PJ
通讯作者:
Parker, PJ
DOI:
10.1073/pnas.1117597109
发表时间:
2012-02-07
影响因子:
11.1
作者:
Boura, Evzen;Hurley, James H.
通讯作者:
Hurley, James H.