+Open data
-Basic information
Entry | Database: PDB / ID: 7kve | ||||||
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Title | Cryo-EM structure of human Factor V at 3.3 Angstrom resolution | ||||||
Components | Coagulation factor V | ||||||
Keywords | BLOOD CLOTTING / human Factor V | ||||||
Function / homology | Function and homology information response to vitamin K / platelet alpha granule / Cargo concentration in the ER / blood circulation / COPII-mediated vesicle transport / COPII-coated ER to Golgi transport vesicle / Common Pathway of Fibrin Clot Formation / endoplasmic reticulum-Golgi intermediate compartment membrane / platelet alpha granule lumen / Post-translational protein phosphorylation ...response to vitamin K / platelet alpha granule / Cargo concentration in the ER / blood circulation / COPII-mediated vesicle transport / COPII-coated ER to Golgi transport vesicle / Common Pathway of Fibrin Clot Formation / endoplasmic reticulum-Golgi intermediate compartment membrane / platelet alpha granule lumen / Post-translational protein phosphorylation / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / blood coagulation / extracellular vesicle / Platelet degranulation / copper ion binding / endoplasmic reticulum lumen / extracellular space / extracellular region / membrane / plasma membrane Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||
Authors | Ruben, E.A. / Di Cera, E. | ||||||
Funding support | United States, 1items
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Citation | Journal: Blood / Year: 2021 Title: Cryo-EM structures of human coagulation factors V and Va. Authors: Eliza A Ruben / Michael J Rau / James A J Fitzpatrick / Enrico Di Cera / Abstract: Coagulation factor V (fV) is the precursor of fVa, which, together with fXa, Ca2+, and phospholipids, defines the prothrombinase complex and activates prothrombin in the penultimate step of the ...Coagulation factor V (fV) is the precursor of fVa, which, together with fXa, Ca2+, and phospholipids, defines the prothrombinase complex and activates prothrombin in the penultimate step of the coagulation cascade. We solved the cryogenic electron microscopy (cryo-EM) structures of human fV and fVa at atomic (3.3 Å) and near-atomic (4.4 Å) resolution, respectively. The structure of fV reveals the entire A1-A2-B-A3-C1-C2 assembly, but with a surprisingly disordered B domain. The C1 and C2 domains provide a platform for interaction with phospholipid membranes and support the A1 and A3 domains, with the A2 domain sitting on top of them. The B domain is highly dynamic and visible only for short segments connecting to the A2 and A3 domains. The A2 domain reveals all sites of proteolytic processing by thrombin and activated protein C, a partially buried epitope for binding fXa, and fully exposed epitopes for binding activated protein C and prothrombin. Removal of the B domain and activation to fVa exposes the sites of cleavage by activated protein C at R306 and R506 and produces increased disorder in the A1-A2-A3-C1-C2 assembly, especially in the C-terminal acidic portion of the A2 domain that is responsible for prothrombin binding. Ordering of this region and full exposure of the fXa epitope emerge as necessary steps in the assembly of the prothrombin-prothrombinase complex. These structures offer molecular context for the function of fV and fVa and pioneer the analysis of coagulation factors by cryo-EM. | ||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
-Download
PDBx/mmCIF format | 7kve.cif.gz | 272.1 KB | Display | PDBx/mmCIF format |
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PDB format | pdb7kve.ent.gz | 206.1 KB | Display | PDB format |
PDBx/mmJSON format | 7kve.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 7kve_validation.pdf.gz | 1.3 MB | Display | wwPDB validaton report |
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Full document | 7kve_full_validation.pdf.gz | 1.3 MB | Display | |
Data in XML | 7kve_validation.xml.gz | 51.1 KB | Display | |
Data in CIF | 7kve_validation.cif.gz | 74 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/kv/7kve ftp://data.pdbj.org/pub/pdb/validation_reports/kv/7kve | HTTPS FTP |
-Related structure data
Related structure data | 23048MC 7kvfC 7kxyC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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-Components
#1: Protein | Mass: 248973.234 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P12259 |
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Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: human Factor V / Type: COMPLEX / Entity ID: all / Source: NATURAL |
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Source (natural) | Organism: Homo sapiens (human) |
Buffer solution | pH: 7.4 / Details: 20 mM HEPES, 150 mM NaCl, 5 mM CaCl2 |
Specimen | 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 |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 1.65 e/Å2 / Film or detector model: GATAN K2 QUANTUM (4k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.16_3549: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: NONE | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 299182 / Symmetry type: POINT | ||||||||||||||||||||||||
Atomic model building | Protocol: OTHER | ||||||||||||||||||||||||
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