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- EMDB-8367: CryoEM map of the Vo region from S. cerevisiae yeast strain with ... -

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Basic information

Entry
Database: EMDB / ID: EMD-8367
TitleCryoEM map of the Vo region from S. cerevisiae yeast strain with the open reading frame YPR170W-B deleted
Map dataMap of the Vo region from S. cerevisiae yeast strain with the open reading frame YPR170W-B deleted
Sample
  • Complex: Vo region
Function / homology
Function and homology information


cell wall mannoprotein biosynthetic process / ATPase-coupled ion transmembrane transporter activity / protein localization to vacuolar membrane / cellular response to alkaline pH / polyphosphate metabolic process / Insulin receptor recycling / Transferrin endocytosis and recycling / ROS and RNS production in phagocytes / Amino acids regulate mTORC1 / Golgi lumen acidification ...cell wall mannoprotein biosynthetic process / ATPase-coupled ion transmembrane transporter activity / protein localization to vacuolar membrane / cellular response to alkaline pH / polyphosphate metabolic process / Insulin receptor recycling / Transferrin endocytosis and recycling / ROS and RNS production in phagocytes / Amino acids regulate mTORC1 / Golgi lumen acidification / P-type proton-exporting transporter activity / vacuolar transport / vacuolar proton-transporting V-type ATPase, V0 domain / endosomal lumen acidification / vacuole organization / protein targeting to vacuole / proton-transporting V-type ATPase complex / vacuolar proton-transporting V-type ATPase complex / fungal-type vacuole / cellular hyperosmotic response / vacuolar acidification / fungal-type vacuole membrane / phosphatidylinositol-3,5-bisphosphate binding / proton transmembrane transporter activity / intracellular copper ion homeostasis / proton-transporting ATPase activity, rotational mechanism / Neutrophil degranulation / proton transmembrane transport / cell periphery / transmembrane transport / endocytosis / ATPase binding / protein-containing complex assembly / intracellular iron ion homeostasis / membrane raft / Golgi membrane / membrane
Similarity search - Function
ATPase, V0 complex, subunit e1/e2 / ATP synthase subunit H / ATPase, V0 complex, subunit d / V-ATPase proteolipid subunit C, eukaryotic / ATPase, V0 complex, subunit 116kDa, eukaryotic / ATPase, V0 complex, c/d subunit / V-type ATPase subunit C/d / V-type ATP synthase subunit c/d subunit superfamily / V-type ATP synthase c/d subunit, domain 3 superfamily / ATP synthase (C/AC39) subunit ...ATPase, V0 complex, subunit e1/e2 / ATP synthase subunit H / ATPase, V0 complex, subunit d / V-ATPase proteolipid subunit C, eukaryotic / ATPase, V0 complex, subunit 116kDa, eukaryotic / ATPase, V0 complex, c/d subunit / V-type ATPase subunit C/d / V-type ATP synthase subunit c/d subunit superfamily / V-type ATP synthase c/d subunit, domain 3 superfamily / ATP synthase (C/AC39) subunit / V-ATPase proteolipid subunit / V-type ATPase, V0 complex, 116kDa subunit family / V-type ATPase 116kDa subunit family / V-ATPase proteolipid subunit C-like domain / F/V-ATP synthase subunit C superfamily / ATP synthase subunit C
Similarity search - Domain/homology
V-type proton ATPase subunit c'' / V-type proton ATPase subunit c / V-type proton ATPase subunit d / V-type proton ATPase subunit a, vacuolar isoform / V-type proton ATPase subunit c' / V-type proton ATPase subunit e
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
Methodsingle particle reconstruction / cryo EM / Resolution: 8.7 Å
AuthorsMazhab-Jafari MT / Rohou A / Schmidt C / Bueler SA / Benlekbir S / Robinson C / Rubinstein JL
CitationJournal: Nature / Year: 2016
Title: Atomic model for the membrane-embedded V motor of a eukaryotic V-ATPase.
Authors: Mohammad T Mazhab-Jafari / Alexis Rohou / Carla Schmidt / Stephanie A Bueler / Samir Benlekbir / Carol V Robinson / John L Rubinstein /
Abstract: Vacuolar-type ATPases (V-ATPases) are ATP-powered proton pumps involved in processes such as endocytosis, lysosomal degradation, secondary transport, TOR signalling, and osteoclast and kidney ...Vacuolar-type ATPases (V-ATPases) are ATP-powered proton pumps involved in processes such as endocytosis, lysosomal degradation, secondary transport, TOR signalling, and osteoclast and kidney function. ATP hydrolysis in the soluble catalytic V region drives proton translocation through the membrane-embedded V region via rotation of a rotor subcomplex. Variability in the structure of the intact enzyme has prevented construction of an atomic model for the membrane-embedded motor of any rotary ATPase. We induced dissociation and auto-inhibition of the V and V regions of the V-ATPase by starving the yeast Saccharomyces cerevisiae, allowing us to obtain a ~3.9-Å resolution electron cryomicroscopy map of the V complex and build atomic models for the majority of its subunits. The analysis reveals the structures of subunits acc'c″de and a protein that we identify and propose to be a new subunit (subunit f). A large cavity between subunit a and the c-ring creates a cytoplasmic half-channel for protons. The c-ring has an asymmetric distribution of proton-carrying Glu residues, with the Glu residue of subunit c″ interacting with Arg735 of subunit a. The structure suggests sequential protonation and deprotonation of the c-ring, with ATP-hydrolysis-driven rotation causing protonation of a Glu residue at the cytoplasmic half-channel and subsequent deprotonation of a Glu residue at a luminal half-channel.
History
DepositionSep 1, 2016-
Header (metadata) releaseSep 14, 2016-
Map releaseNov 9, 2016-
UpdateJul 18, 2018-
Current statusJul 18, 2018Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.2
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.2
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_8367.png

Downloads & links

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Map

FileDownload / File: emd_8367.map.gz / Format: CCP4 / Size: 15.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationMap of the Vo region from S. cerevisiae yeast strain with the open reading frame YPR170W-B deleted
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.45 Å/pix.
x 160 pix.
= 232. Å		1.45 Å/pix.
x 160 pix.
= 232. Å		1.45 Å/pix.
x 160 pix.
= 232. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.45 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.125 / Movie #1: 0.2
Minimum - Maximum-0.12487619 - 0.40833187
Average (Standard dev.)0.0123775 (±0.04672628)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions160160160
Spacing160160160
CellA=B=C: 232.0 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.451.451.45
M x/y/z160160160
origin x/y/z0.0000.0000.000
length x/y/z232.000232.000232.000
α/β/γ90.00090.00090.000
start NX/NY/NZ-152-37
NX/NY/NZ998271
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS160160160
D min/max/mean-0.1250.4080.012

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Supplemental data

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Sample components

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Entire : Vo region

EntireName: Vo region
Components
  • Complex: Vo region

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Supramolecule #1: Vo region

SupramoleculeName: Vo region / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Details: Vo region from Saccharomyces cerevisiae strain with the open reading frame YPR170W-B deleted
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Molecular weightTheoretical: 300 KDa

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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

Concentration2.5 mg/mL
BufferpH: 7.5
VitrificationCryogen name: ETHANE-PROPANE / Chamber humidity: 100 % / Instrument: FEI VITROBOT MARK III
DetailsVo solubilized in DDM Buffer: 50 mM Tris-HCl pH 7.5, 150 mM NaCl, 0.02 % [w/v] DDM

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Electron microscopy

MicroscopeFEI TECNAI F20
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Frames/image: 1-30 / Number grids imaged: 2 / Average exposure time: 15.0 sec. / Average electron dose: 36.0 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD
Sample stageSpecimen holder model: GATAN LIQUID NITROGEN
Experimental equipment
Model: Tecnai F20 / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: CTFFIND4
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 8.7 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 44468
Initial angle assignmentType: OTHER
Final angle assignmentType: OTHER

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