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Yorodumi- EMDB-48401: Cryo-EM structure of CRAF/MEK1/14-3-3 complex (open monomer confo... -
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Basic information
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| Title | Cryo-EM structure of CRAF/MEK1/14-3-3 complex (open monomer conformation, CRAF Y340D/Y341D mutant) | |||||||||
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Keywords | CRAF-MEK1-14-3-3 complex / MAPK pathway / TRANSFERASE | |||||||||
| Function / homology | Function and homology informationinsulin secretion involved in cellular response to glucose stimulus / death-inducing signaling complex assembly / negative regulation of homotypic cell-cell adhesion / negative regulation of hypoxia-induced intrinsic apoptotic signaling pathway / regulation of vascular associated smooth muscle contraction / intermediate filament cytoskeleton organization / mitogen-activated protein kinase kinase / Golgi inheritance / MAP kinase scaffold activity / type B pancreatic cell proliferation ...insulin secretion involved in cellular response to glucose stimulus / death-inducing signaling complex assembly / negative regulation of homotypic cell-cell adhesion / negative regulation of hypoxia-induced intrinsic apoptotic signaling pathway / regulation of vascular associated smooth muscle contraction / intermediate filament cytoskeleton organization / mitogen-activated protein kinase kinase / Golgi inheritance / MAP kinase scaffold activity / type B pancreatic cell proliferation / positive regulation of muscle contraction / melanosome transport / regulation of Rho protein signal transduction / Signaling by MAP2K mutants / SHOC2 M1731 mutant abolishes MRAS complex function / Gain-of-function MRAS complexes activate RAF signaling / Rap1 signalling / vesicle transport along microtubule / regulation of Golgi inheritance / mitogen-activated protein kinase kinase kinase binding / triglyceride homeostasis / regulation of early endosome to late endosome transport / Negative feedback regulation of MAPK pathway / neurotrophin TRK receptor signaling pathway / regulation of stress-activated MAPK cascade / IFNG signaling activates MAPKs / GP1b-IX-V activation signalling / Frs2-mediated activation / face development / MAPK3 (ERK1) activation / thyroid gland development / ERBB2-ERBB3 signaling pathway / MAP kinase kinase activity / regulation of neurotransmitter receptor localization to postsynaptic specialization membrane / positive regulation of protein serine/threonine kinase activity / extrinsic apoptotic signaling pathway via death domain receptors / pseudopodium / somatic stem cell population maintenance / regulation of cell differentiation / positive regulation of ATP biosynthetic process / neuromuscular junction development / Uptake and function of anthrax toxins / positive regulation of peptidyl-serine phosphorylation / MAP kinase kinase kinase activity / response to axon injury / type II interferon-mediated signaling pathway / protein kinase activator activity / ERK1 and ERK2 cascade / Schwann cell development / negative regulation of extrinsic apoptotic signaling pathway via death domain receptors / negative regulation of protein-containing complex assembly / response to muscle stretch / neuron projection morphogenesis / myelination / insulin-like growth factor receptor signaling pathway / protein serine/threonine/tyrosine kinase activity / thymus development / CD209 (DC-SIGN) signaling / positive regulation of autophagy / dendrite cytoplasm / response to glucocorticoid / adenylate cyclase activator activity / Signal transduction by L1 / protein serine/threonine kinase activator activity / MAP3K8 (TPL2)-dependent MAPK1/3 activation / wound healing / positive regulation of transcription elongation by RNA polymerase II / RAF activation / Signaling by high-kinase activity BRAF mutants / MAP2K and MAPK activation / cellular senescence / small GTPase binding / Stimuli-sensing channels / chemotaxis / neuron differentiation / 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 / Negative regulation of MAPK pathway / insulin receptor signaling pathway / Signaling by BRAF and RAF1 fusions / late endosome / MAPK cascade / protein tyrosine kinase activity / response to oxidative stress / scaffold protein binding / regulation of apoptotic process / cell cortex / microtubule / perikaryon / protein phosphorylation / positive regulation of MAPK cascade / early endosome / positive regulation of ERK1 and ERK2 cascade / protein kinase activity / mitochondrial outer membrane / non-specific serine/threonine protein kinase / ciliary basal body / postsynaptic density Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human) / Spodoptera exigua (beet armyworm) | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.9 Å | |||||||||
Authors | Jang DM / Jeon H / Eck MJ | |||||||||
| Funding support | United States, 1 items
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Citation | Journal: Nat Commun / Year: 2025Title: Cryo-EM structures of CRAF/MEK1/14-3-3 complexes in autoinhibited and open-monomer states reveal features of RAF regulation. Authors: Dong Man Jang / Kayla Boxer / Byung Hak Ha / Emre Tkacik / Talya Levitz / Shaun Rawson / Rebecca J Metivier / Anna Schmoker / Hyesung Jeon / Michael J Eck / ![]() Abstract: CRAF (RAF1) is one of three RAF-family kinases that initiate MAP kinase signaling in response to activated RAS and is essential for oncogenic signaling from mutant KRAS. Like BRAF, CRAF is regulated ...CRAF (RAF1) is one of three RAF-family kinases that initiate MAP kinase signaling in response to activated RAS and is essential for oncogenic signaling from mutant KRAS. Like BRAF, CRAF is regulated by 14-3-3 engagement and by intramolecular autoinhibitory interactions of its N-terminal regulatory region. Unlike BRAF, it is thought to require tyrosine phosphorylation in its N-terminal acidic (NtA) motif for full catalytic activation. Here we describe cryo-EM reconstructions of full-length CRAF in complex with MEK1 and a 14-3-3 dimer. These structures reveal a fully autoinhibited conformation analogous to that observed for BRAF and two "open monomer" states in which the inhibitory interactions of the CRD and 14-3-3 dimer are released or rearranged, but the kinase domain remains inactive. Structure-function studies of the NtA motif indicate that phosphorylation or acidic mutations in this segment increase catalytic activity by destabilizing the inactive conformation of the kinase domain. Collectively, these studies provide a structural foundation for understanding the shared and unique regulatory features of CRAF and will inform efforts to selectively block CRAF signaling in cancer. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_48401.map.gz | 81.4 MB | EMDB map data format | |
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| Header (meta data) | emd-48401-v30.xml emd-48401.xml | 24.4 KB 24.4 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_48401_fsc.xml | 16.1 KB | Display | FSC data file |
| Images | emd_48401.png | 628.9 KB | ||
| Masks | emd_48401_msk_1.map | 163.6 MB | Mask map | |
| Filedesc metadata | emd-48401.cif.gz | 7.6 KB | ||
| Others | emd_48401_half_map_1.map.gz emd_48401_half_map_2.map.gz | 152 MB 152 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-48401 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-48401 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9mmrMC ![]() 9mmpC ![]() 9mmqC ![]() 9mmsC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_48401.map.gz / Format: CCP4 / Size: 163.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.73 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Mask #1
| File | emd_48401_msk_1.map | ||||||||||||
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-Half map: #2
| File | emd_48401_half_map_1.map | ||||||||||||
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| Density Histograms |
-Half map: #1
| File | emd_48401_half_map_2.map | ||||||||||||
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| Density Histograms |
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Sample components
+Entire : CRAF/MEK1/14-3-3 complex
+Supramolecule #1: CRAF/MEK1/14-3-3 complex
+Supramolecule #2: CRAF
+Supramolecule #3: MEK1
+Supramolecule #4: 14-3-3 dimer
+Macromolecule #1: RAF proto-oncogene serine/threonine-protein kinase
+Macromolecule #2: Dual specificity mitogen-activated protein kinase kinase 1
+Macromolecule #3: 14-3-3 protein zeta
+Macromolecule #4: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
+Macromolecule #5: MAGNESIUM ION
+Macromolecule #6: 5-[(2-fluoro-4-iodophenyl)amino]-N-(2-hydroxyethoxy)imidazo[1,5-a...
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 0.4 mg/mL |
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| Buffer | pH: 7.5 Details: 50 mM Tris pH 7.5, 150 mM NaCl, 2 mM MgCl2, 0.5 mM TCEP, 2 uM ATPgS, 1 uM GDC0623 |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Instrument: LEICA EM GP |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Specialist optics | Energy filter - Name: TFS Selectris / Energy filter - Slit width: 10 eV |
| Image recording | Film or detector model: FEI FALCON I (4k x 4k) / Number grids imaged: 1 / Number real images: 6060 / Average electron dose: 56.65 e/Å2 / Details: tilt by 30 degree |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: OTHER / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 165000 |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
| Refinement | Space: REAL |
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| Output model | ![]() PDB-9mmr: |
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About Yorodumi



Keywords
Homo sapiens (human)
Spodoptera exigua (beet armyworm)
Authors
United States, 1 items
Citation

















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FIELD EMISSION GUN


