Snf7 spirals sense and alter membrane curvature.
Snf7 spirals sense and alter membrane curvature.
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DOI:
10.1038/s41467-022-29850-z
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发表时间:
2022-04-21
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Endosomal Sorting Complex Required for Transport III (ESCRT-III) is a conserved protein system involved in many cellular processes resulting in membrane deformation and scission, topologically away from the cytoplasm. However, little is known about the transition of the planar membrane-associated protein assembly into a 3D structure. High-speed atomic force microscopy (HS-AFM) provided insights into assembly, structural dynamics and turnover of Snf7, the major ESCRT-III component, on planar supported lipid bilayers. Here, we develop HS-AFM experiments that remove the constraints of membrane planarity, crowdedness, and support rigidity. On non-planar membranes, Snf7 monomers are curvature insensitive, but Snf7-spirals selectively adapt their conformation to membrane geometry. In a non-crowded system, Snf7-spirals reach a critical radius, and remodel to minimize internal stress. On non-rigid supports, Snf7-spirals compact and buckle, deforming the underlying bilayer. These experiments provide direct evidence that Snf7 is sufficient to mediate topological transitions, in agreement with the loaded spiral spring model. Snf7 is the major component of the ESCRTIII membrane deformation system. Here, the authors used high-speed AFM to study Snf7 on nano-patterned and soft supports and show that loaded Snf7 spiral springs are curvature sensitive and deform membranes.
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DOI:
10.1126/science.1161070
发表时间:
2008-09-05
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Lata S;Schoehn G;Jain A;Pires R;Piehler J;Gottlinger HG;Weissenhorn W
通讯作者:
Weissenhorn W
影响因子:
64.5
作者:
Katzmann, DJ;Babst, M;Emr, SD
通讯作者:
Emr, SD
影响因子:
56.9
作者:
Lafaurie-Janvore, Julie;Maiuri, Paolo;Piel, Matthieu
通讯作者:
Piel, Matthieu
影响因子:
7.7
作者:
Cashikar, Anil G.;Shim, Soomin;Hanson, Phyllis I.
通讯作者:
Hanson, Phyllis I.
影响因子:
56.9
作者:
Carlton, Jez G.;Martin-Serrano, Juan
通讯作者:
Martin-Serrano, Juan