- EMDB-8888: Unsharpened Map of Vps4p-Vta1p complex with peptide binding to th... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-8888
タイトル
Unsharpened Map of Vps4p-Vta1p complex with peptide binding to the central pore of Vps4p
マップデータ
Vps4-Vta1 complex
試料
複合体: Vps4-Vta1 complex
機能・相同性
機能・相同性情報
ESCRT IV complex / Sealing of the nuclear envelope (NE) by ESCRT-III / late endosome to lysosome transport via multivesicular body sorting pathway / intralumenal vesicle formation / Macroautophagy / protein retention in Golgi apparatus / Endosomal Sorting Complex Required For Transport (ESCRT) / ESCRT III complex / endosome transport via multivesicular body sorting pathway / ATP export ...ESCRT IV complex / Sealing of the nuclear envelope (NE) by ESCRT-III / late endosome to lysosome transport via multivesicular body sorting pathway / intralumenal vesicle formation / Macroautophagy / protein retention in Golgi apparatus / Endosomal Sorting Complex Required For Transport (ESCRT) / ESCRT III complex / endosome transport via multivesicular body sorting pathway / ATP export / late endosome to vacuole transport via multivesicular body sorting pathway / sterol metabolic process / nuclear membrane reassembly / midbody abscission / multivesicular body sorting pathway / vacuole organization / plasma membrane repair / membrane fission / late endosome to vacuole transport / ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway / multivesicular body assembly / lipid transport / reticulophagy / endosomal transport / nucleus organization / ATPase complex / ATPase activator activity / autophagosome maturation / nuclear pore / multivesicular body / macroautophagy / autophagy / protein transport / protein-macromolecule adaptor activity / midbody / endosome / endoplasmic reticulum / protein homodimerization activity / ATP hydrolysis activity / extracellular region / ATP binding / identical protein binding / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能
: / Type VI secretion system effector Hcp / Hcp1-like superfamily / Type VI secretion system effector, Hcp / Vta1/Callose synthase, N-terminal domain superfamily / Vta1/callose synthase, N-terminal / Vta1, C-terminal / Vacuolar protein sorting-associated protein Vta1-like / Vta1 like / Vta1 C-terminal domain ...: / Type VI secretion system effector Hcp / Hcp1-like superfamily / Type VI secretion system effector, Hcp / Vta1/Callose synthase, N-terminal domain superfamily / Vta1/callose synthase, N-terminal / Vta1, C-terminal / Vacuolar protein sorting-associated protein Vta1-like / Vta1 like / Vta1 C-terminal domain / Vacuolar protein sorting-associated protein 4, MIT domain / MIT (microtubule interacting and transport) domain / MIT domain superfamily / Vps4 oligomerisation, C-terminal / : / MIT domain / Microtubule Interacting and Trafficking molecule domain / Snf7 family / Snf7 / Vps4 C terminal oligomerisation domain / AAA ATPase, AAA+ lid domain / AAA+ lid domain / ATPase, AAA-type, conserved site / AAA-protein family signature. / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
DOA4-independent degradation protein 4 / Vacuolar protein sorting-associated protein 4 / Vacuolar protein sorting-associated protein VTA1 / Protein hcp1 類似検索 - 構成要素
ジャーナル: Elife / 年: 2017 タイトル: The AAA ATPase Vps4 binds ESCRT-III substrates through a repeating array of dipeptide-binding pockets. 著者: Han Han / Nicole Monroe / Wesley I Sundquist / Peter S Shen / Christopher P Hill / 要旨: The hexameric AAA ATPase Vps4 drives membrane fission by remodeling and disassembling ESCRT-III filaments. Building upon our earlier 4.3 Å resolution cryo-EM structure (Monroe et al., 2017), we now ...The hexameric AAA ATPase Vps4 drives membrane fission by remodeling and disassembling ESCRT-III filaments. Building upon our earlier 4.3 Å resolution cryo-EM structure (Monroe et al., 2017), we now report a 3.2 Å structure of Vps4 bound to an ESCRT-III peptide substrate. The new structure reveals that the peptide approximates a β-strand conformation whose helical symmetry matches that of the five Vps4 subunits it contacts directly. Adjacent Vps4 subunits make equivalent interactions with successive substrate dipeptides through two distinct classes of side chain binding pockets formed primarily by Vps4 pore loop 1. These pockets accommodate a wide range of residues, while main chain hydrogen bonds may help dictate substrate-binding orientation. The structure supports a 'conveyor belt' model of translocation in which ATP binding allows a Vps4 subunit to join the growing end of the helix and engage the substrate, while hydrolysis and release promotes helix disassembly and substrate release at the lagging end.