+
Open data
-
Basic information
Entry | Database: PDB / ID: 7ytj | ||||||
---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of VTC complex | ||||||
![]() | (Vacuolar transporter chaperone ...) x 3 | ||||||
![]() | TRANSPORT PROTEIN / VTC complex / Poly P. | ||||||
Function / homology | ![]() vacuolar transporter chaperone complex / ATP-polyphosphate phosphotransferase / polyphosphate biosynthetic process / engulfment of target by autophagosome / polyphosphate kinase activity / vacuole fusion, non-autophagic / microautophagy / polyphosphate metabolic process / intracellular phosphate ion homeostasis / inositol hexakisphosphate binding ...vacuolar transporter chaperone complex / ATP-polyphosphate phosphotransferase / polyphosphate biosynthetic process / engulfment of target by autophagosome / polyphosphate kinase activity / vacuole fusion, non-autophagic / microautophagy / polyphosphate metabolic process / intracellular phosphate ion homeostasis / inositol hexakisphosphate binding / vacuolar transport / fungal-type vacuole membrane / vacuolar membrane / autophagosome membrane / cell periphery / cell cortex / cytoplasmic vesicle / nuclear membrane / calmodulin binding / mRNA binding / endoplasmic reticulum membrane / endoplasmic reticulum / membrane Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3 Å | ||||||
![]() | Guan, Z.Y. / Chen, J. / Liu, R.W. / Chen, Y.K. / Xing, Q. / Du, Z.M. / Liu, Z. | ||||||
Funding support | ![]()
| ||||||
![]() | ![]() Title: The cytoplasmic synthesis and coupled membrane translocation of eukaryotic polyphosphate by signal-activated VTC complex. Authors: Zeyuan Guan / Juan Chen / Ruiwen Liu / Yanke Chen / Qiong Xing / Zhangmeng Du / Meng Cheng / Jianjian Hu / Wenhui Zhang / Wencong Mei / Beijing Wan / Qiang Wang / Jie Zhang / Peng Cheng / ...Authors: Zeyuan Guan / Juan Chen / Ruiwen Liu / Yanke Chen / Qiong Xing / Zhangmeng Du / Meng Cheng / Jianjian Hu / Wenhui Zhang / Wencong Mei / Beijing Wan / Qiang Wang / Jie Zhang / Peng Cheng / Huanyu Cai / Jianbo Cao / Delin Zhang / Junjie Yan / Ping Yin / Michael Hothorn / Zhu Liu / ![]() ![]() Abstract: Inorganic polyphosphate (polyP) is an ancient energy metabolite and phosphate store that occurs ubiquitously in all organisms. The vacuolar transporter chaperone (VTC) complex integrates cytosolic ...Inorganic polyphosphate (polyP) is an ancient energy metabolite and phosphate store that occurs ubiquitously in all organisms. The vacuolar transporter chaperone (VTC) complex integrates cytosolic polyP synthesis from ATP and polyP membrane translocation into the vacuolar lumen. In yeast and in other eukaryotes, polyP synthesis is regulated by inositol pyrophosphate (PP-InsP) nutrient messengers, directly sensed by the VTC complex. Here, we report the cryo-electron microscopy structure of signal-activated VTC complex at 3.0 Å resolution. Baker's yeast VTC subunits Vtc1, Vtc3, and Vtc4 assemble into a 3:1:1 complex. Fifteen trans-membrane helices form a novel membrane channel enabling the transport of newly synthesized polyP into the vacuolar lumen. PP-InsP binding orients the catalytic polymerase domain at the entrance of the trans-membrane channel, both activating the enzyme and coupling polyP synthesis and membrane translocation. Together with biochemical and cellular studies, our work provides mechanistic insights into the biogenesis of an ancient energy metabolite. | ||||||
History |
|
-
Structure visualization
Structure viewer | Molecule: ![]() ![]() |
---|
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 333.4 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 269.8 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 1.4 MB | Display | ![]() |
---|---|---|---|---|
Full document | ![]() | 1.4 MB | Display | |
Data in XML | ![]() | 55.5 KB | Display | |
Data in CIF | ![]() | 80 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 34090MC M: map data used to model this data C: citing same article ( |
---|---|
Similar structure data | Similarity search - Function & homology ![]() |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
-Vacuolar transporter chaperone ... , 3 types, 5 molecules DABCE
#1: Protein | Mass: 86425.984 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Strain: ATCC 204508 / S288c / Gene: VTC4, PHM3, YJL012C, J1345 / Production host: ![]() | ||
---|---|---|---|
#2: Protein | Mass: 15943.701 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Strain: ATCC 204508 / S288c / Gene: VTC1, NRF1, PHM4, YER072W / Production host: ![]() #3: Protein | | Mass: 100120.773 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Strain: ATCC 204508 / S288c / Gene: VTC3, PHM2, YPL019C / Production host: ![]() |
-Non-polymers , 3 types, 7 molecules ![](data/chem/img/IHP.gif)
![](data/chem/img/PC1.gif)
![](data/chem/img/PO4.gif)
![](data/chem/img/PC1.gif)
![](data/chem/img/PO4.gif)
#4: Chemical | #5: Chemical | #6: Chemical | |
---|
-Details
Has ligand of interest | Y |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component | Name: VTC complex / Type: COMPLEX / Entity ID: #1-#3 / Source: RECOMBINANT |
---|---|
Source (natural) | Organism: ![]() ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 8 |
Specimen | Conc.: 6.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
-
Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
---|---|
Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2200 nm / Nominal defocus min: 1200 nm |
Image recording | Electron dose: 55 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-
Processing
Software | Name: PHENIX / Version: 1.20.1_4487: / Classification: refinement | ||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EM software | Name: cryoSPARC / Category: classification | ||||||||||||||||||||||||
CTF correction | Type: NONE | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 734934 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
|