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- EMDB-8587: AAA ATPase Vps4 hexamer in closed conformation -

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Basic information

Entry
Database: EMDB / ID: EMD-8587
TitleAAA ATPase Vps4 hexamer in closed conformation
Map dataAAA ATPase Vps4 hexamer in closed conformation
Sample
  • Complex: Vps4
    • Protein or peptide: Vps4
Function / homology
Function and homology information


ESCRT IV complex / late endosome to lysosome transport via multivesicular body sorting pathway / intralumenal vesicle formation / Sealing of the nuclear envelope (NE) by ESCRT-III / protein retention in Golgi apparatus / late endosome to vacuole transport via multivesicular body sorting pathway / sterol metabolic process / nuclear membrane reassembly / midbody abscission / vacuole organization ...ESCRT IV complex / late endosome to lysosome transport via multivesicular body sorting pathway / intralumenal vesicle formation / Sealing of the nuclear envelope (NE) by ESCRT-III / protein retention in Golgi apparatus / late endosome to vacuole transport via multivesicular body sorting pathway / sterol metabolic process / nuclear membrane reassembly / midbody abscission / vacuole organization / multivesicular body sorting pathway / membrane fission / plasma membrane repair / late endosome to vacuole transport / multivesicular body assembly / reticulophagy / nucleus organization / endosomal transport / ATPase complex / autophagosome maturation / nuclear pore / macroautophagy / autophagy / protein transport / midbody / endosome / endoplasmic reticulum / ATP hydrolysis activity / protein homodimerization activity / ATP binding / membrane / identical protein binding / plasma membrane / cytoplasm
Similarity search - Function
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 / Vps4 C terminal oligomerisation domain / AAA ATPase, AAA+ lid domain / AAA+ lid domain / ATPase, AAA-type, conserved site ...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 / 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
Similarity search - Domain/homology
Vacuolar protein sorting-associated protein 4
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
Methodsingle particle reconstruction / cryo EM / Resolution: 6.0 Å
AuthorsSu M / Guo EZ
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)R01 GM095769 United States
National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Disease (NIH/NIDDK)R01 DK090165 United States
CitationJournal: Sci Adv / Year: 2017
Title: Mechanism of Vps4 hexamer function revealed by cryo-EM.
Authors: Min Su / Emily Z Guo / Xinqiang Ding / Yan Li / Jeffrey T Tarrasch / Charles L Brooks / Zhaohui Xu / Georgios Skiniotis /
Abstract: Vps4 is a member of AAA ATPase (adenosine triphosphatase associated with diverse cellular activities) that operates as an oligomer to disassemble ESCRT-III (endosomal sorting complex required for ...Vps4 is a member of AAA ATPase (adenosine triphosphatase associated with diverse cellular activities) that operates as an oligomer to disassemble ESCRT-III (endosomal sorting complex required for transport III) filaments, thereby catalyzing the final step in multiple ESCRT-dependent membrane remodeling events. We used electron cryo-microscopy to visualize oligomers of a hydrolysis-deficient Vps4 (vacuolar protein sorting-associated protein 4) mutant in the presence of adenosine 5'-triphosphate (ATP). We show that Vps4 subunits assemble into an asymmetric hexameric ring following an approximate helical path that sequentially stacks substrate-binding loops along the central pore. The hexamer is observed to adopt an open or closed ring configuration facilitated by major conformational changes in a single subunit. The structural transition of the mobile Vps4 subunit results in the repositioning of its substrate-binding loop from the top to the bottom of the central pore, with an associated translation of 33 Å. These structures, along with mutant-doping experiments and functional assays, provide evidence for a sequential and processive ATP hydrolysis mechanism by which Vps4 hexamers disassemble ESCRT-III filaments.
History
DepositionFeb 3, 2017-
Header (metadata) releaseMar 8, 2017-
Map releaseNov 8, 2017-
UpdateJan 29, 2020-
Current statusJan 29, 2020Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.1
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.1
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_8587.png

Downloads & links

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Map

FileDownload / File: emd_8587.map.gz / Format: CCP4 / Size: 8 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationAAA ATPase Vps4 hexamer in closed conformation
Voxel sizeX=Y=Z: 2 Å
Density
Contour LevelBy AUTHOR: 0.1 / Movie #1: 0.1
Minimum - Maximum-0.28010008 - 0.49596047
Average (Standard dev.)0.001731898 (±0.018840462)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions128128128
Spacing128128128
CellA=B=C: 256.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z222
M x/y/z128128128
origin x/y/z0.0000.0000.000
length x/y/z256.000256.000256.000
α/β/γ90.00090.00090.000
start NX/NY/NZ-38-19-20
NX/NY/NZ858082
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS128128128
D min/max/mean-0.2800.4960.002

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Supplemental data

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Sample components

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Entire : Vps4

EntireName: Vps4
Components
  • Complex: Vps4
    • Protein or peptide: Vps4

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Supramolecule #1: Vps4

SupramoleculeName: Vps4 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Recombinant expressionOrganism: Escherichia coli (E. coli)

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Macromolecule #1: Vps4

MacromoleculeName: Vps4 / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
SequenceString: MSTGDFLTKG IELVQKAIDL DTATQYEEAY TAYYNGLDYL MLALKYEKNP KSKDLIRAKF TEYLNRAEQL KKHLESEEAN AAKKSPSAG SGSNGGNKKI SQEEGEDNGG EDNKKLRGAL SSAILSEKPN VKWEDVAGLE GAKEALKEAV ILPVKFPHLF K GNRKPTSG ...String:
MSTGDFLTKG IELVQKAIDL DTATQYEEAY TAYYNGLDYL MLALKYEKNP KSKDLIRAKF TEYLNRAEQL KKHLESEEAN AAKKSPSAG SGSNGGNKKI SQEEGEDNGG EDNKKLRGAL SSAILSEKPN VKWEDVAGLE GAKEALKEAV ILPVKFPHLF K GNRKPTSG ILLYGPPGTG KSYLAKAVAT EANSTFFSVS SSDLVSKWMG ESEKLVKQLF AMARENKPSI IFIDQVDALT GT RGEGESE ASRRIKTELL VQMNGVGNDS QGVLVLGATN IPWQLDSAIR RRFERRIYIP LPDLAARTTM FEINVGDTPS VLT KEDYRT LGAMTEGYSG SDIAVVVKDA LMQPIRKIQS ATHFKDVSTE DDETRKLTPS SPGDDGAIEM SWTDIEADEL KEPD LTIKD FLKAIKSTRP TVNEDDLLKQ EQFTRDFGQE GN

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7
GridModel: Quantifoil / Material: COPPER / Mesh: 200
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 100.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm
Sample stageCooling holder cryogen: NITROGEN
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 8.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: CTFFIND (ver. 3)
Initial angle assignmentType: PROJECTION MATCHING / Software - Name: EAMN (ver. 2)
Final angle assignmentType: PROJECTION MATCHING / Software - Name: RELION (ver. 1.3)
Final reconstructionResolution.type: BY AUTHOR / Resolution: 6.0 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 1.3) / Number images used: 99175

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