2p22: Difference between revisions

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==Overview==
==Overview==
The endosomal sorting complex required for transport-I (ESCRT-I) complex, which is conserved from yeast to humans, directs the lysosomal degradation, of ubiquitinated transmembrane proteins and the budding of the HIV virus., Yeast ESCRT-I contains four subunits, Vps23, Vps28, Vps37, and Mvb12. The, crystal structure of the heterotetrameric ESCRT-I complex reveals a highly, asymmetric complex of 1:1:1:1 subunit stoichiometry. The core complex is, nearly 18 nm long and consists of a headpiece attached to a 13 nm stalk., The stalk is important for cargo sorting by ESCRT-I and is proposed to, serve as a spacer regulating the correct disposition of cargo and other, ESCRT components. Hydrodynamic constraints and crystallographic structures, were used to generate a model of intact ESCRT-I in solution. The results, show how ESCRT-I uses a combination of a rigid stalk and flexible tethers, to interact with lipids, cargo, and other ESCRT complexes over a span of, approximately 25 nm.
The endosomal sorting complex required for transport-I (ESCRT-I) complex, which is conserved from yeast to humans, directs the lysosomal degradation of ubiquitinated transmembrane proteins and the budding of the HIV virus. Yeast ESCRT-I contains four subunits, Vps23, Vps28, Vps37, and Mvb12. The crystal structure of the heterotetrameric ESCRT-I complex reveals a highly asymmetric complex of 1:1:1:1 subunit stoichiometry. The core complex is nearly 18 nm long and consists of a headpiece attached to a 13 nm stalk. The stalk is important for cargo sorting by ESCRT-I and is proposed to serve as a spacer regulating the correct disposition of cargo and other ESCRT components. Hydrodynamic constraints and crystallographic structures were used to generate a model of intact ESCRT-I in solution. The results show how ESCRT-I uses a combination of a rigid stalk and flexible tethers to interact with lipids, cargo, and other ESCRT complexes over a span of approximately 25 nm.


==About this Structure==
==About this Structure==
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[[Category: Protein complex]]
[[Category: Protein complex]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Hurley, J.H.]]
[[Category: Hurley, J H.]]
[[Category: Kostelansky, MS]]
[[Category: Kostelansky, MS]]
[[Category: SO4]]
[[Category: SO4]]
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[[Category: vps37]]
[[Category: vps37]]


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