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Open data
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Basic information
Entry | Database: PDB / ID: 6uan | |||||||||
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Title | B-Raf:14-3-3 complex | |||||||||
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![]() | SIGNALING PROTEIN / Complex Kinase | |||||||||
Function / homology | ![]() CD4-positive, alpha-beta T cell differentiation / trehalose metabolism in response to stress / CD4-positive or CD8-positive, alpha-beta T cell lineage commitment / negative regulation of synaptic vesicle exocytosis / Signalling to p38 via RIT and RIN / head morphogenesis / myeloid progenitor cell differentiation / ARMS-mediated activation / SHOC2 M1731 mutant abolishes MRAS complex function / Gain-of-function MRAS complexes activate RAF signaling ...CD4-positive, alpha-beta T cell differentiation / trehalose metabolism in response to stress / CD4-positive or CD8-positive, alpha-beta T cell lineage commitment / negative regulation of synaptic vesicle exocytosis / Signalling to p38 via RIT and RIN / head morphogenesis / myeloid progenitor cell differentiation / ARMS-mediated activation / SHOC2 M1731 mutant abolishes MRAS complex function / Gain-of-function MRAS complexes activate RAF signaling / endothelial cell apoptotic process / negative regulation of fibroblast migration / positive regulation of glucose transmembrane transport / establishment of protein localization to membrane / mitogen-activated protein kinase kinase binding / regulation of T cell differentiation / Negative feedback regulation of MAPK pathway / positive regulation of axonogenesis / Frs2-mediated activation / stress fiber assembly / positive regulation of axon regeneration / face development / synaptic vesicle exocytosis / somatic stem cell population maintenance / MAP kinase kinase activity / thyroid gland development / MAP kinase kinase kinase activity / negative regulation of endothelial cell apoptotic process / positive regulation of substrate adhesion-dependent cell spreading / positive regulation of stress fiber assembly / response to cAMP / cellular response to calcium ion / ERK1 and ERK2 cascade / substrate adhesion-dependent cell spreading / cellular response to nerve growth factor stimulus / thymus development / long-term synaptic potentiation / animal organ morphogenesis / Spry regulation of FGF signaling / RAF activation / Signaling by high-kinase activity BRAF mutants / visual learning / MAP2K and MAPK activation / epidermal growth factor receptor signaling pathway / response to peptide hormone / Negative regulation of MAPK pathway / Signaling by RAF1 mutants / Signaling by moderate kinase activity BRAF mutants / Paradoxical activation of RAF signaling by kinase inactive BRAF / Signaling downstream of RAS mutants / MAPK cascade / Signaling by BRAF and RAF1 fusions / cellular response to xenobiotic stimulus / presynapse / positive regulation of peptidyl-serine phosphorylation / T cell receptor signaling pathway / regulation of cell population proliferation / cell body / T cell differentiation in thymus / scaffold protein binding / negative regulation of neuron apoptotic process / Ras protein signal transduction / positive regulation of ERK1 and ERK2 cascade / non-specific serine/threonine protein kinase / protein kinase activity / neuron projection / protein phosphorylation / intracellular membrane-bounded organelle / protein serine kinase activity / protein serine/threonine kinase activity / calcium ion binding / protein-containing complex binding / positive regulation of gene expression / negative regulation of apoptotic process / mitochondrion / ATP binding / identical protein binding / nucleus / plasma membrane / cytosol Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
![]() | Kondo, Y. / Ognjenovic, J. / Banerjee, S. / Karandur, D. / Merk, A. / Kulhanek, K. / Wong, K. / Roose, J.P. / Subramaniam, S. / Kuriyan, J. | |||||||||
Funding support | ![]() ![]()
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![]() | ![]() Title: Cryo-EM structure of a dimeric B-Raf:14-3-3 complex reveals asymmetry in the active sites of B-Raf kinases. Authors: Yasushi Kondo / Jana Ognjenović / Saikat Banerjee / Deepti Karandur / Alan Merk / Kayla Kulhanek / Kathryn Wong / Jeroen P Roose / Sriram Subramaniam / John Kuriyan / ![]() ![]() Abstract: Raf kinases are important cancer drug targets. Paradoxically, many B-Raf inhibitors induce the activation of Raf kinases. Cryo-electron microscopy structural analysis of a phosphorylated B-Raf kinase ...Raf kinases are important cancer drug targets. Paradoxically, many B-Raf inhibitors induce the activation of Raf kinases. Cryo-electron microscopy structural analysis of a phosphorylated B-Raf kinase domain dimer in complex with dimeric 14-3-3, at a resolution of ~3.9 angstroms, shows an asymmetric arrangement in which one kinase is in a canonical "active" conformation. The distal segment of the C-terminal tail of this kinase interacts with, and blocks, the active site of the cognate kinase in this asymmetric arrangement. Deletion of the C-terminal segment reduces Raf activity. The unexpected asymmetric quaternary architecture illustrates how the paradoxical activation of Raf by kinase inhibitors reflects an innate mechanism, with 14-3-3 facilitating inhibition of one kinase while maintaining activity of the other. Conformational modulation of these contacts may provide new opportunities for Raf inhibitor development. #1: ![]() Title: Cryo-EM structure of a dimeric B-Raf:14-3-3 complex reveals asymmetry in the active sites of B-Raf kinases Authors: Kondo, Y. / Ognjenovic, J. / Banerjee, S. / Karandur, D. / Merk, A. / Kulhanek, K. / Wong, K. / Roose, J.P. / Subramaniam, S. / Kuriyan, J. | |||||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 194.8 KB | Display | ![]() |
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PDB format | ![]() | 150.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 855.8 KB | Display | ![]() |
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Full document | ![]() | 864.9 KB | Display | |
Data in XML | ![]() | 35.9 KB | Display | |
Data in CIF | ![]() | 54.5 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 20708MC M: map data used to model this data C: citing same article ( |
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Similar structure data | |
EM raw data | ![]() Data size: 6.2 TB Data #1: Unaligned multi-frame micrographs of B-Raf:14-3-3 complex [micrographs - multiframe] Data #2: Unaligned multi-frame micrographs of B-Raf:14-3-3 complex [micrographs - multiframe]) |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 28108.514 Da / Num. of mol.: 2 / Source method: isolated from a natural source Source: (natural) ![]() References: UniProt: A0A068JLL8 #2: Protein | Mass: 84781.922 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Production host: ![]() References: UniProt: P15056, non-specific serine/threonine protein kinase Has ligand of interest | Y | |
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-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Ternary complex of B-Raf kinase domain dimer and 14-3-3 dimer Type: COMPLEX / Entity ID: all / Source: RECOMBINANT | ||||||||||||||||
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Molecular weight | Experimental value: NO | ||||||||||||||||
Source (natural) | Organism: ![]() | ||||||||||||||||
Source (recombinant) | Organism: ![]() | ||||||||||||||||
Buffer solution | pH: 8 | ||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||
Specimen support | Grid material: COPPER / Grid mesh size: 200 divisions/in. / Grid type: Quantifoil R1.2/1.3 | ||||||||||||||||
Vitrification | Instrument: LEICA EM GP / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 278 K |
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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: ![]() |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 50 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
Software | Name: PHENIX / Version: 1.14_3260: / Classification: refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 113313 / Symmetry type: POINT | ||||||||||||||||||||||||
Refine LS restraints |
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