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- PDB-8yxz: Vo domain of V/A-ATPase from Thermus thermophilus state1 -

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Basic information

Entry
Database: PDB / ID: 8yxz
TitleVo domain of V/A-ATPase from Thermus thermophilus state1
Components
  • V-type ATP synthase subunit C
  • V-type ATP synthase subunit I
  • V-type ATP synthase, subunit K
KeywordsMOTOR PROTEIN / V/A-ATPase / ATP synthase
Function / homology
Function and homology information


proton-transporting V-type ATPase, V0 domain / vacuolar proton-transporting V-type ATPase complex / vacuolar acidification / proton motive force-driven plasma membrane ATP synthesis / proton-transporting ATPase activity, rotational mechanism / proton-transporting ATP synthase activity, rotational mechanism / ATPase binding / ATP binding
Similarity search - Function
V-type ATP synthase subunit I, N-terminal / Vacuolar ATPase subunit I, N-terminal proximal lobe / Vacuolar ATPase Subunit I N-terminal proximal lobe / V-type ATPase subunit I, N-terminal domain / ATPase, V0 complex, c subunit / : / 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 ...V-type ATP synthase subunit I, N-terminal / Vacuolar ATPase subunit I, N-terminal proximal lobe / Vacuolar ATPase Subunit I N-terminal proximal lobe / V-type ATPase subunit I, N-terminal domain / ATPase, V0 complex, c subunit / : / 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 ATP synthase subunit C / V-type ATP synthase subunit I / V-type ATP synthase, subunit K
Similarity search - Component
Biological speciesThermus thermophilus HB8 (bacteria)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å
AuthorsKishikawa, J. / Nishida, Y. / Nakano, A. / Yokoyama, K.
Funding support Japan, 4items
OrganizationGrant numberCountry
Japan Society for the Promotion of Science (JSPS)23H02453 Japan
Japan Society for the Promotion of Science (JSPS)20K06514 Japan
Japan Society for the Promotion of Science (JSPS)22H0595 Japan
Japan Agency for Medical Research and Development (AMED)JP17am0101001 Japan
CitationJournal: Nat Commun / Year: 2024
Title: Rotary mechanism of the prokaryotic V motor driven by proton motive force.
Authors: Jun-Ichi Kishikawa / Yui Nishida / Atsuki Nakano / Takayuki Kato / Kaoru Mitsuoka / Kei-Ichi Okazaki / Ken Yokoyama /
Abstract: ATP synthases play a crucial role in energy production by utilizing the proton motive force (pmf) across the membrane to rotate their membrane-embedded rotor c-ring, and thus driving ATP synthesis in ...ATP synthases play a crucial role in energy production by utilizing the proton motive force (pmf) across the membrane to rotate their membrane-embedded rotor c-ring, and thus driving ATP synthesis in the hydrophilic catalytic hexamer. However, the mechanism of how pmf converts into c-ring rotation remains unclear. This study presents a 2.8 Å cryo-EM structure of the V domain of V/A-ATPase from Thermus thermophilus, revealing precise orientations of glutamate (Glu) residues in the c-ring. Three Glu residues face a water channel, with one forming a salt bridge with the Arginine in the stator (a/Arg). Molecular dynamics (MD) simulations show that protonation of specific Glu residues triggers unidirectional Brownian motion of the c-ring towards ATP synthesis. When the key Glu remains unprotonated, the salt bridge persists, blocking rotation. These findings suggest that asymmetry in the protonation of c/Glu residues biases c-ring movement, facilitating rotation and ATP synthesis.
History
DepositionApr 3, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Dec 4, 2024Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
M: V-type ATP synthase subunit C
N: V-type ATP synthase subunit I
O: V-type ATP synthase, subunit K
P: V-type ATP synthase, subunit K
Q: V-type ATP synthase, subunit K
R: V-type ATP synthase, subunit K
S: V-type ATP synthase, subunit K
T: V-type ATP synthase, subunit K
U: V-type ATP synthase, subunit K
V: V-type ATP synthase, subunit K
W: V-type ATP synthase, subunit K
X: V-type ATP synthase, subunit K
Y: V-type ATP synthase, subunit K
Z: V-type ATP synthase, subunit K


Theoretical massNumber of molelcules
Total (without water)231,24714
Polymers231,24714
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: gel filtration
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein V-type ATP synthase subunit C / V-ATPase subunit C


Mass: 35968.570 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Thermus thermophilus HB8 (bacteria) / Production host: Thermus thermophilus HB8 (bacteria) / References: UniProt: P74902
#2: Protein V-type ATP synthase subunit I


Mass: 72204.289 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Thermus thermophilus HB8 (bacteria) / Production host: Thermus thermophilus HB8 (bacteria) / References: UniProt: Q5SIT6
#3: Protein
V-type ATP synthase, subunit K


Mass: 10256.154 Da / Num. of mol.: 12
Source method: isolated from a genetically manipulated source
Details: 3 His residues on the c-terminal are purification tag.
Source: (gene. exp.) Thermus thermophilus HB8 (bacteria) / Production host: Thermus thermophilus HB8 (bacteria) / References: UniProt: Q5SIT7
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Vo domain of V/A-ATPase from thermus thermophilus. / Type: COMPLEX / Entity ID: all / Source: RECOMBINANT
Molecular weightValue: 0.3 MDa / Experimental value: YES
Source (natural)Organism: Thermus thermophilus HB8 (bacteria)
Source (recombinant)Organism: Thermus thermophilus HB8 (bacteria)
Buffer solutionpH: 8
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid type: Quantifoil
VitrificationCryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 298 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 800 nm / Cs: 0.105 mm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM software
IDNameVersionCategory
1Topazparticle selection
4CTFFIND4.1.8CTF correction
7PHENIX1.2model fitting
9RELIONinitial Euler assignment
10RELION4.01final Euler assignment
11RELION4.01classification
12RELION4.013D reconstruction
13ISOLDE1.3model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Particle selectionNum. of particles selected: 1671397
3D reconstructionResolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 33767 / Algorithm: FOURIER SPACE / Num. of class averages: 2 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT / Space: REAL
Atomic model buildingPDB-ID: 6QUM

6qum


Accession code: 6QUM / Source name: PDB / Type: experimental model
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00313691
ELECTRON MICROSCOPYf_angle_d0.58718559
ELECTRON MICROSCOPYf_dihedral_angle_d3.4471968
ELECTRON MICROSCOPYf_chiral_restr0.0392225
ELECTRON MICROSCOPYf_plane_restr0.0052381

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