[English] 日本語
![](img/lk-miru.gif)
- PDB-6t9n: CryoEM structure of human polycystin-2/PKD2 in UDM supplemented w... -
+
Open data
-
Basic information
Entry | Database: PDB / ID: 6t9n | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | CryoEM structure of human polycystin-2/PKD2 in UDM supplemented with PI(4,5)P2 | |||||||||
![]() | Polycystin-2 | |||||||||
![]() | MEMBRANE PROTEIN / ION CHANNEL / TRANSIENT RECEPTOR POTENTIAL CHANNEL / POLYCYSTIC KIDNEY DISEASE / Structural Genomics / Structural Genomics Consortium / SGC | |||||||||
Function / homology | ![]() detection of nodal flow / metanephric smooth muscle tissue development / metanephric cortex development / metanephric cortical collecting duct development / metanephric distal tubule development / polycystin complex / mesonephric tubule development / mesonephric duct development / metanephric part of ureteric bud development / determination of liver left/right asymmetry ...detection of nodal flow / metanephric smooth muscle tissue development / metanephric cortex development / metanephric cortical collecting duct development / metanephric distal tubule development / polycystin complex / mesonephric tubule development / mesonephric duct development / metanephric part of ureteric bud development / determination of liver left/right asymmetry / renal tubule morphogenesis / metanephric ascending thin limb development / HLH domain binding / basal cortex / metanephric mesenchyme development / metanephric S-shaped body morphogenesis / renal artery morphogenesis / positive regulation of inositol 1,4,5-trisphosphate-sensitive calcium-release channel activity / migrasome / cilium organization / VxPx cargo-targeting to cilium / detection of mechanical stimulus / calcium-induced calcium release activity / regulation of calcium ion import / cation channel complex / muscle alpha-actinin binding / placenta blood vessel development / voltage-gated monoatomic ion channel activity / cellular response to hydrostatic pressure / outward rectifier potassium channel activity / cellular response to fluid shear stress / voltage-gated monoatomic cation channel activity / non-motile cilium / cellular response to osmotic stress / actinin binding / motile cilium / transcription regulator inhibitor activity / determination of left/right symmetry / aorta development / inorganic cation transmembrane transport / neural tube development / ciliary membrane / voltage-gated sodium channel activity / protein heterotetramerization / branching involved in ureteric bud morphogenesis / negative regulation of G1/S transition of mitotic cell cycle / spinal cord development / heart looping / negative regulation of ryanodine-sensitive calcium-release channel activity / voltage-gated potassium channel activity / cytoplasmic side of endoplasmic reticulum membrane / cell surface receptor signaling pathway via JAK-STAT / centrosome duplication / potassium channel activity / sodium ion transmembrane transport / embryonic placenta development / voltage-gated calcium channel activity / monoatomic cation channel activity / cellular response to cAMP / release of sequestered calcium ion into cytosol / potassium ion transmembrane transport / cellular response to calcium ion / cytoskeletal protein binding / basal plasma membrane / ciliary basal body / liver development / establishment of localization in cell / lumenal side of endoplasmic reticulum membrane / phosphoprotein binding / calcium ion transmembrane transport / protein tetramerization / cytoplasmic vesicle membrane / cilium / mitotic spindle / Wnt signaling pathway / intracellular calcium ion homeostasis / cellular response to reactive oxygen species / calcium ion transport / positive regulation of nitric oxide biosynthetic process / cell-cell junction / lamellipodium / heart development / regulation of cell population proliferation / positive regulation of cytosolic calcium ion concentration / ATPase binding / basolateral plasma membrane / protein homotetramerization / transmembrane transporter binding / cell surface receptor signaling pathway / regulation of cell cycle / negative regulation of cell population proliferation / signaling receptor binding / calcium ion binding / endoplasmic reticulum membrane / positive regulation of gene expression / Golgi apparatus / endoplasmic reticulum / protein homodimerization activity / positive regulation of transcription by RNA polymerase II / extracellular exosome Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.96 Å | |||||||||
![]() | Wang, Q. / Pike, A.C.W. / Grieben, M. / Baronina, A. / Nasrallah, C. / Shintre, C. / Edwards, A.M. / Arrowsmith, C.H. / Bountra, C. / Carpenter, E.P. / Structural Genomics Consortium (SGC) | |||||||||
Funding support | ![]()
| |||||||||
![]() | ![]() Title: Lipid Interactions of a Ciliary Membrane TRP Channel: Simulation and Structural Studies of Polycystin-2. Authors: Qinrui Wang / Robin A Corey / George Hedger / Prafulla Aryal / Mariana Grieben / Chady Nasrallah / Agnese Baronina / Ashley C W Pike / Jiye Shi / Elisabeth P Carpenter / Mark S P Sansom / ![]() Abstract: Polycystin-2 (PC2) is a transient receptor potential (TRP) channel present in ciliary membranes of the kidney. PC2 shares a transmembrane fold with other TRP channels, in addition to an extracellular ...Polycystin-2 (PC2) is a transient receptor potential (TRP) channel present in ciliary membranes of the kidney. PC2 shares a transmembrane fold with other TRP channels, in addition to an extracellular domain found in TRPP and TRPML channels. Using molecular dynamics (MD) simulations and cryoelectron microscopy we identify and characterize PIP and cholesterol interactions with PC2. PC2 is revealed to have a PIP binding site close to the equivalent vanilloid/lipid binding site in the TRPV1 channel. A 3.0-Å structure reveals a binding site for cholesterol on PC2. Cholesterol interactions with the channel at this site are characterized by MD simulations. The two classes of lipid binding sites are compared with sites observed in other TRPs and in Kv channels. These findings suggest PC2, in common with other ion channels, may be modulated by both PIPs and cholesterol, and position PC2 within an emerging model of the roles of lipids in the regulation and organization of ciliary membranes. | |||||||||
History |
|
-
Structure visualization
Movie |
![]() |
---|---|
Structure viewer | Molecule: ![]() ![]() |
-
Downloads & links
-
Download
PDBx/mmCIF format | ![]() | 370.9 KB | Display | ![]() |
---|---|---|---|---|
PDB format | ![]() | 310 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
---|
-Related structure data
Related structure data | ![]() 10418MC ![]() 6t9oC M: map data used to model this data C: citing same article ( |
---|---|
Similar structure data |
-
Links
-
Assembly
Deposited unit | ![]()
|
---|---|
1 |
|
-
Components
-Protein , 1 types, 4 molecules ABCD
#1: Protein | Mass: 63986.668 Da / Num. of mol.: 4 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
---|
-Sugars , 2 types, 12 molecules ![](data/chem/img/NAG.gif)
#2: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #4: Sugar | ChemComp-NAG / |
---|
-Non-polymers , 3 types, 37 molecules ![](data/chem/img/CLR.gif)
![](data/chem/img/UMQ.gif)
![](data/chem/img/CA.gif)
![](data/chem/img/UMQ.gif)
![](data/chem/img/CA.gif)
#3: Chemical | ChemComp-CLR / #5: Chemical | ChemComp-UMQ / #6: Chemical | ChemComp-CA / | |
---|
-Details
Has ligand of interest | N |
---|
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
---|---|
EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
Component | Name: POLYCYSTIN-2 CHANNEL TETRAMER / Type: ORGANELLE OR CELLULAR COMPONENT Details: Detergent (UDM) purified in presence of lipid PI(4,5)P2 Entity ID: #1 / Source: RECOMBINANT | |||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Molecular weight | Value: 0.256 MDa / Experimental value: NO | |||||||||||||||||||||||||
Source (natural) | Organism: ![]() | |||||||||||||||||||||||||
Source (recombinant) | Organism: ![]() ![]() | |||||||||||||||||||||||||
Buffer solution | pH: 7.5 | |||||||||||||||||||||||||
Buffer component |
| |||||||||||||||||||||||||
Specimen | Conc.: 4.5 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | |||||||||||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 | |||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 278 K |
-
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: 2500 nm / Nominal defocus min: 1000 nm / Cs: 2.7 mm / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Average exposure time: 8 sec. / Electron dose: 52.2 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 1597 |
Image scans | Movie frames/image: 20 / Used frames/image: 1-20 |
-
Processing
Software |
| ||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
EM software |
| ||||||||||||||||||||||||||||||||||||||||
Image processing | Details: Images were corrected for local motion using patch-based methods with MotionCor2 | ||||||||||||||||||||||||||||||||||||||||
CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
Particle selection | Num. of particles selected: 98113 | ||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C4 (4 fold cyclic) | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.96 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 51694 Details: RELION autorefinement. Unmasked resolution is 3.12. After masking to remove the detergent micelle resolution is 2.96A Num. of class averages: 1 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | B value: 85 / Protocol: AB INITIO MODEL / Space: REAL | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 5K47 | ||||||||||||||||||||||||||||||||||||||||
Refinement | Cross valid method: THROUGHOUT | ||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso max: 93.99 Å2 / Biso mean: 35.0255 Å2 / Biso min: 14.07 Å2 | ||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
|