[English] 日本語
Yorodumi- EMDB-24667: Cryo-EM structure of Kip3 (AMPPNP) bound to GMPCPP-Stabilized Mic... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-24667 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Cryo-EM structure of Kip3 (AMPPNP) bound to GMPCPP-Stabilized Microtubules | |||||||||
Map data | Cryo-EM structure of Kip3 (AMPPNP) bound to GMPCPP-Stabilized Microtubules | |||||||||
Sample |
| |||||||||
Keywords | kinesin-8 / microtubules / complex / MOTOR PROTEIN | |||||||||
Function / homology | Function and homology information Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling ...Microtubule-dependent trafficking of connexons from Golgi to the plasma membrane / Hedgehog 'off' state / Cilium Assembly / Intraflagellar transport / COPI-dependent Golgi-to-ER retrograde traffic / Carboxyterminal post-translational modifications of tubulin / RHOH GTPase cycle / Sealing of the nuclear envelope (NE) by ESCRT-III / Kinesins / PKR-mediated signaling / The role of GTSE1 in G2/M progression after G2 checkpoint / Aggrephagy / Resolution of Sister Chromatid Cohesion / Mitotic Prometaphase / EML4 and NUDC in mitotic spindle formation / Separation of Sister Chromatids / RHO GTPases activate IQGAPs / RHO GTPases Activate Formins / HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / MHC class II antigen presentation / Recruitment of NuMA to mitotic centrosomes / COPI-mediated anterograde transport / structural constituent of cytoskeleton / microtubule cytoskeleton organization / microtubule cytoskeleton / mitotic cell cycle / Hydrolases; Acting on acid anhydrides; Acting on GTP to facilitate cellular and subcellular movement / microtubule / GTPase activity / GTP binding / metal ion binding / cytoplasm Similarity search - Function | |||||||||
Biological species | Sus scrofa (pig) / Saccharomyces cerevisiae (brewer's yeast) | |||||||||
Method | helical reconstruction / cryo EM / Resolution: 4.1 Å | |||||||||
Authors | Hernandez-Lopez RA / Leschziner AE | |||||||||
Funding support | 1 items
| |||||||||
Citation | Journal: Biorxiv / Year: 2024 Title: Multimodal tubulin binding by the yeast kinesin-8, Kip3, underlies its motility and depolymerization Authors: Arellano-Santoyo H / Hernandez-Lopez RA / Stokasimov E / Wang RY-R / Pellman D / Lesczhiner AE | |||||||||
History |
|
-Structure visualization
Supplemental images |
---|
-Downloads & links
-EMDB archive
Map data | emd_24667.map.gz | 12.6 MB | EMDB map data format | |
---|---|---|---|---|
Header (meta data) | emd-24667-v30.xml emd-24667.xml | 19 KB 19 KB | Display Display | EMDB header |
Images | emd_24667.png | 206 KB | ||
Filedesc metadata | emd-24667.cif.gz | 7.8 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-24667 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-24667 | HTTPS FTP |
-Validation report
Summary document | emd_24667_validation.pdf.gz | 473.5 KB | Display | EMDB validaton report |
---|---|---|---|---|
Full document | emd_24667_full_validation.pdf.gz | 473.1 KB | Display | |
Data in XML | emd_24667_validation.xml.gz | 6.4 KB | Display | |
Data in CIF | emd_24667_validation.cif.gz | 7.3 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-24667 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-24667 | HTTPS FTP |
-Related structure data
Related structure data | 7rs6MC 7rs5C C: citing same article (ref.) M: atomic model generated by this map |
---|---|
Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
---|---|
Related items in Molecule of the Month |
-Map
File | Download / File: emd_24667.map.gz / Format: CCP4 / Size: 103 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | Cryo-EM structure of Kip3 (AMPPNP) bound to GMPCPP-Stabilized Microtubules | ||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 0.98 Å | ||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
|
-Supplemental data
-Sample components
+Entire : Cryo-EM structure of Kip3 (AMPPNP) bound to GMPCPP-Stabilized Mic...
+Supramolecule #1: Cryo-EM structure of Kip3 (AMPPNP) bound to GMPCPP-Stabilized Mic...
+Supramolecule #2: GMPCPP-stabilized microtubules
+Supramolecule #3: yeast kinesin-8/ Kip3
+Macromolecule #1: Tubulin alpha-1B chain
+Macromolecule #2: Tubulin beta chain
+Macromolecule #3: kinesin-8/ Kip3
+Macromolecule #4: GUANOSINE-5'-TRIPHOSPHATE
+Macromolecule #5: MAGNESIUM ION
+Macromolecule #6: PHOSPHOMETHYLPHOSPHONIC ACID GUANYLATE ESTER
+Macromolecule #7: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
Processing | helical reconstruction |
Aggregation state | helical array |
-Sample preparation
Buffer | pH: 6.8 Details: BRB80 buffer (80 mM PIPES-KOH, pH 6.8; 1 mM MgCl2, 1 mM EGTA, 1 mM DTT) |
---|---|
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 22 K / Instrument: FEI VITROBOT MARK IV |
Details | Highly purified, glycerol-free tubulin (Cytoskeleton, Inc.) was resuspended in BRB80 buffer (80 mM PIPES-KOH, pH 6.8, 1 mM MgCl2, 1 mM EGTA, 1 mM DTT) to a concentration of 10 mg/mL. GMPCPP microtubules were polymerized using GMPCPP seeds (20 uM tubulin, 1mM GMPCPP, 1mM MgCl2, 1mM DTT in BRB80). A 1 uL aliquot of seeds was transferred to a 37 C water bath. After 30 minutes, 40 uL of elongation mix (2 uM tubulin, 0.5 mM GMPCPP, 0.5 mM MgCl2, 1 mM DTT in BRB80) were added and the mixture was then incubated for additional 4.5 - 5 hours at 37 C. Purified Kip3 438 protein was buffer exchanged to cryoEM buffer (50 mM Tris-HCl, pH 8.0, 1 mM MgCl2, 1 mM EGTA, 1 mM DTT supplemented with 2mM AMPPNP) and desalted using a ZEBA spin desalting column. The protein was recovered by centrifugation at 15,000 rcf for 2 min. A final spin at 30,000 x g in a TLA 100 rotor (Beckman) for 10 min at 4 C was carried out to remove big aggregates. |
-Electron microscopy
Microscope | FEI POLARA 300 |
---|---|
Details | Images were recorded using a semi-automated acquisition program Serial EM with a defocus range from 1.5 to 3.5 um. |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Number grids imaged: 1 / Number real images: 643 / Average exposure time: 5.0 sec. / Average electron dose: 40.0 e/Å2 Details: Final accumulated electron doses were 40 electrons/A2. Images were collected in super-resolution mode. The total exposure time was 5 seconds, fractionated into 20 subframes, each with an exposure time of 0.25 s. |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Tecnai Polara / Image courtesy: FEI Company |
-Image processing
Final reconstruction | Applied symmetry - Helical parameters - Δz: 8.9 Å Applied symmetry - Helical parameters - Δ&Phi: -25.76 ° Applied symmetry - Helical parameters - Axial symmetry: C14 (14 fold cyclic) Algorithm: BACK PROJECTION / Resolution.type: BY AUTHOR / Resolution: 4.1 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: FREALIGN / Number images used: 21788 |
---|---|
Segment selection | Number selected: 29090 / Software - Name: Appion Details: Inspection, defocus estimation, microtubule picking, and stack creation were performed within the Appion processing environment (Lander et al., 2009). Images were selected for processing on ...Details: Inspection, defocus estimation, microtubule picking, and stack creation were performed within the Appion processing environment (Lander et al., 2009). Images were selected for processing on the basis of high decoration, straight MTs, and the absence of crystalline ice. |
Startup model | Type of model: INSILICO MODEL |
Final angle assignment | Type: NOT APPLICABLE / Software - Name: FREALIGN |
-Atomic model buiding 1
Initial model |
| ||||||||
---|---|---|---|---|---|---|---|---|---|
Details | Multiple rounds of refinement were carried out against one half map (training map), and the other half map (validation map) was used to monitor overfitting based on the procedure described in Wang et al. elife, 2016. It is to note that the molecular interactions of ligand-protein were restrained to the initial poses adapted from the high-resolution structures during structure refinement. | ||||||||
Refinement | Space: REAL / Protocol: OTHER / Overall B value: 100 Target criteria: Overall correlation of the residues to the map | ||||||||
Output model | PDB-7rs6: |