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ATP-dependent force generation and membrane scission by ESCRT-III and Vps4
Vise andre og tillknytning
2018 (engelsk)Inngår i: Science, ISSN 0036-8075, E-ISSN 1095-9203, Vol. 362, nr 6421, s. 1423-+Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

The endosomal sorting complexes required for transport (ESCRTs) catalyze reverse topology scission from the inner face of membrane necks in HIV budding, multivesicular endosome biogenesis, cytokinesis, and other pathways. We encapsulated ESCRT-III subunits Snf7, Vps24. and Vps2 and the AAA+ ATPase (adenosine triphosphatase) Vps4 in giant vesicles from which membrane nanotubes reflecting the correct topology of scission could be pulled. Upon ATP release by photo-uncaging, this system generated forces within the nanotubes that led to membrane scission in a manner dependent upon Vps4 catalytic activity and Vps4 coupling to the ESCRT-III proteins. Imaging of scission revealed Snf7 and Vps4 puncta within nanotubes whose presence followed ATP release, correlated with force generation and nanotube constriction, and preceded scission. These observations directly verify long-standing predictions that ATP-hydrolyzing assemblies of ESCRT-Ill and Vps4 sever membranes.

sted, utgiver, år, opplag, sider
American Association for the Advancement of Science , 2018. Vol. 362, nr 6421, s. 1423-+
HSV kategori
Identifikatorer
URN: urn:nbn:se:umu:diva-155095DOI: 10.1126/science.aat1839ISI: 000453845000063PubMedID: 30573630OAI: oai:DiVA.org:umu-155095DiVA, id: diva2:1277409
Forskningsfinansiär
NIH (National Institute of Health), R56AI127809NIH (National Institute of Health), R01GM032543NIH (National Institute of Health), R01AI112442Tilgjengelig fra: 2019-01-10 Laget: 2019-01-10 Sist oppdatert: 2019-01-10bibliografisk kontrollert

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