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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-0541 | |||||||||
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Title | Structure of a MAPK pathway complex | |||||||||
![]() | Structure of a MAPK pathway complex | |||||||||
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![]() | TRANSFERASE | |||||||||
Function / homology | ![]() epithelial cell proliferation involved in lung morphogenesis / negative regulation of homotypic cell-cell adhesion / negative regulation of hypoxia-induced intrinsic apoptotic signaling pathway / positive regulation of endodermal cell differentiation / regulation of vascular associated smooth muscle contraction / CD4-positive, alpha-beta T cell differentiation / mitogen-activated protein kinase kinase / Golgi inheritance / placenta blood vessel development / MAP-kinase scaffold activity ...epithelial cell proliferation involved in lung morphogenesis / negative regulation of homotypic cell-cell adhesion / negative regulation of hypoxia-induced intrinsic apoptotic signaling pathway / positive regulation of endodermal cell differentiation / regulation of vascular associated smooth muscle contraction / CD4-positive, alpha-beta T cell differentiation / mitogen-activated protein kinase kinase / Golgi inheritance / placenta blood vessel development / MAP-kinase scaffold activity / positive regulation of muscle contraction / CD4-positive or CD8-positive, alpha-beta T cell lineage commitment / negative regulation of synaptic vesicle exocytosis / labyrinthine layer development / cerebellar cortex formation / regulation of axon regeneration / melanosome transport / type B pancreatic cell proliferation / Signalling to p38 via RIT and RIN / central nervous system neuron differentiation / head morphogenesis / ARMS-mediated activation / myeloid progenitor cell differentiation / endothelial cell apoptotic process / Signaling by MAP2K mutants / SHOC2 M1731 mutant abolishes MRAS complex function / Gain-of-function MRAS complexes activate RAF signaling / vesicle transport along microtubule / negative regulation of fibroblast migration / positive regulation of D-glucose transmembrane transport / positive regulation of axon regeneration / establishment of protein localization to membrane / positive regulation of axonogenesis / positive regulation of Ras protein signal transduction / regulation of Golgi inheritance / mitogen-activated protein kinase kinase kinase binding / regulation of T cell differentiation / triglyceride homeostasis / trachea formation / Negative feedback regulation of MAPK pathway / regulation of early endosome to late endosome transport / mitogen-activated protein kinase kinase binding / regulation of stress-activated MAPK cascade / Frs2-mediated activation / stress fiber assembly / MAPK3 (ERK1) activation / ERBB2-ERBB3 signaling pathway / regulation of neurotransmitter receptor localization to postsynaptic specialization membrane / endodermal cell differentiation / face development / positive regulation of ATP biosynthetic process / MAP kinase kinase activity / Bergmann glial cell differentiation / synaptic vesicle exocytosis / Uptake and function of anthrax toxins / thyroid gland development / protein kinase activator activity / somatic stem cell population maintenance / MAP kinase kinase kinase activity / positive regulation of protein serine/threonine kinase activity / postsynaptic modulation of chemical synaptic transmission / positive regulation of peptidyl-serine phosphorylation / negative regulation of endothelial cell apoptotic process / response to axon injury / Schwann cell development / response to glucocorticoid / response to cAMP / keratinocyte differentiation / positive regulation of stress fiber assembly / ERK1 and ERK2 cascade / myelination / positive regulation of autophagy / positive regulation of substrate adhesion-dependent cell spreading / protein serine/threonine/tyrosine kinase activity / substrate adhesion-dependent cell spreading / dendrite cytoplasm / insulin-like growth factor receptor signaling pathway / cellular response to calcium ion / MAP3K8 (TPL2)-dependent MAPK1/3 activation / protein serine/threonine kinase activator activity / thymus development / animal organ morphogenesis / neuron projection morphogenesis / Signal transduction by L1 / cell motility / positive regulation of transcription elongation by RNA polymerase II / RAF activation / Spry regulation of FGF signaling / Signaling by high-kinase activity BRAF mutants / cellular response to nerve growth factor stimulus / MAP2K and MAPK activation / visual learning / response to peptide hormone / small GTPase binding / centriolar satellite / long-term synaptic potentiation / epidermal growth factor receptor signaling pathway / neuron differentiation / chemotaxis / Negative regulation of MAPK pathway Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.1 Å | |||||||||
![]() | Park E / Rawson S | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Architecture of autoinhibited and active BRAF-MEK1-14-3-3 complexes. Authors: Eunyoung Park / Shaun Rawson / Kunhua Li / Byeong-Won Kim / Scott B Ficarro / Gonzalo Gonzalez-Del Pino / Humayun Sharif / Jarrod A Marto / Hyesung Jeon / Michael J Eck / ![]() Abstract: RAF family kinases are RAS-activated switches that initiate signalling through the MAP kinase cascade to control cellular proliferation, differentiation and survival. RAF activity is tightly ...RAF family kinases are RAS-activated switches that initiate signalling through the MAP kinase cascade to control cellular proliferation, differentiation and survival. RAF activity is tightly regulated and inappropriate activation is a frequent cause of cancer; however, the structural basis for RAF regulation is poorly understood at present. Here we use cryo-electron microscopy to determine autoinhibited and active-state structures of full-length BRAF in complexes with MEK1 and a 14-3-3 dimer. The reconstruction reveals an inactive BRAF-MEK1 complex restrained in a cradle formed by the 14-3-3 dimer, which binds the phosphorylated S365 and S729 sites that flank the BRAF kinase domain. The BRAF cysteine-rich domain occupies a central position that stabilizes this assembly, but the adjacent RAS-binding domain is poorly ordered and peripheral. The 14-3-3 cradle maintains autoinhibition by sequestering the membrane-binding cysteine-rich domain and blocking dimerization of the BRAF kinase domain. In the active state, these inhibitory interactions are released and a single 14-3-3 dimer rearranges to bridge the C-terminal pS729 binding sites of two BRAFs, which drives the formation of an active, back-to-back BRAF dimer. Our structural snapshots provide a foundation for understanding normal RAF regulation and its mutational disruption in cancer and developmental syndromes. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 21.1 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 20.9 KB 20.9 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 7.2 KB | Display | ![]() |
Images | ![]() | 188 KB | ||
Filedesc metadata | ![]() | 7.8 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 439.5 KB | Display | ![]() |
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Full document | ![]() | 438.9 KB | Display | |
Data in XML | ![]() | 9.6 KB | Display | |
Data in CIF | ![]() | 12.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6nybMC ![]() 6pp9C ![]() 6q0jC ![]() 6q0kC ![]() 6q0tC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | Structure of a MAPK pathway complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Ternary complex of BRAF/MEK1/14-3-3 with MEK inhibitor
Entire | Name: Ternary complex of BRAF/MEK1/14-3-3 with MEK inhibitor |
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Components |
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-Supramolecule #1: Ternary complex of BRAF/MEK1/14-3-3 with MEK inhibitor
Supramolecule | Name: Ternary complex of BRAF/MEK1/14-3-3 with MEK inhibitor type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3 Details: 14-3-3 is heterodimer of Insect epsilon and zeta. model was generated by Insect zeta sequence as a homo-dimer. |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 190 KDa |
-Macromolecule #1: Serine/threonine-protein kinase B-raf
Macromolecule | Name: Serine/threonine-protein kinase B-raf / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO / EC number: non-specific serine/threonine protein kinase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 89.402789 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MSYYHHHHHH HHDIPTTENL YFQGAMDMAA LSGGGGGGAE PGQALFNGDM EPEAGAGAGA AASSAADPAI PEEVWNIKQM IKLTQEHIE ALLDKFGGEH NPPSIYLEAY EEYTSKLDAL QQREQQLLES LGNGTDFSVS SSASMDTVTS SSSSSLSVLP S SLSVFQNP ...String: MSYYHHHHHH HHDIPTTENL YFQGAMDMAA LSGGGGGGAE PGQALFNGDM EPEAGAGAGA AASSAADPAI PEEVWNIKQM IKLTQEHIE ALLDKFGGEH NPPSIYLEAY EEYTSKLDAL QQREQQLLES LGNGTDFSVS SSASMDTVTS SSSSSLSVLP S SLSVFQNP TDVARSNPKS PQKPIVRVFL PNKQRTVVPA RCGVTVRDSL KKALMMRGLI PECCAVYRIQ DGEKKPIGWD TD ISWLTGE ELHVEVLENV PLTTHNFVRK TFFTLAFCDF CRKLLFQGFR CQTCGYKFHQ RCSTEVPLMC VNYDQLDLLF VSK FFEHHP IPQEEASLAE TALTSGSSPS APASDSIGPQ ILTSPSPSKS IPIPQPFRPA DEDHRNQFGQ RDRSS(SEP)APNV HINTIEPVN IDDLIRDQGF RGDGGSTTGL SATPPASLPG SLTNVKALQK SPGPQRERKS SSSSEDRNRM KTLGRRDSSD D WEIPDGQI TVGQRIGSGS FGTVYKGKWH GDVAVKMLNV TAPTPQQLQA FKNEVGVLRK TRHVNILLFM GYSTKPQLAI VT QWCEGSS LYHHLHIIET KFEMIKLIDI ARQTAQGMDY LHAKSIIHRD LKSNNIFLHE DLTVKIGDFG LATVKSRWSG SHQ FEQLSG SILWMAPEVI RMQDKNPYSF QSDVYAFGIV LYELMTGQLP YSNINNRDQI IFMVGRGYLS PDLSKVRSNC PKAM KRLMA ECLKKKRDER PLFPQILASI ELLARSLPKI HRSA(SEP)EPSLN RAGFQTEDFS LYACASPKTP IQAGGYGAFP V HGTSAWSH PQFEK UniProtKB: Serine/threonine-protein kinase B-raf |
-Macromolecule #2: Dual specificity mitogen-activated protein kinase kinase 1
Macromolecule | Name: Dual specificity mitogen-activated protein kinase kinase 1 type: protein_or_peptide / ID: 2 / Details: GDC-0623 / Number of copies: 1 / Enantiomer: LEVO / EC number: mitogen-activated protein kinase kinase |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 45.934543 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MGSSHHHHHH SAVDENLYFQ GGMPKKKPTP IQLNPAPDGS AVNGTSSAET NLEALQKKLE ELELDEQQRK RLEAFLTQKQ KVGELKDDD FEKISELGAG NGGVVFKVSH KPSGLVMARK LIHLEIKPAI RNQIIRELQV LHECNSPYIV GFYGAFYSDG E ISICMEHM ...String: MGSSHHHHHH SAVDENLYFQ GGMPKKKPTP IQLNPAPDGS AVNGTSSAET NLEALQKKLE ELELDEQQRK RLEAFLTQKQ KVGELKDDD FEKISELGAG NGGVVFKVSH KPSGLVMARK LIHLEIKPAI RNQIIRELQV LHECNSPYIV GFYGAFYSDG E ISICMEHM DGGSLDQVLK KAGRIPEQIL GKVSIAVIKG LTYLREKHKI MHRDVKPSNI LVNSRGEIKL CDFGVSGQLI DA MANAFVG TRSYMSPERL QGTHYSVQSD IWSMGLSLVE MAVGRYPIPP PDAKELELMF GCQVEGDAAE TPPRPRTPGR PLS SYGMDS RPPMAIFELL DYIVNEPPPK LPSGVFSLEF QDFVNKCLIK NPAERADLKQ LMVHAFIKRS DAEEVDFAGW LCST IGLNQ PSTPTHAAGV UniProtKB: Dual specificity mitogen-activated protein kinase kinase 1 |
-Macromolecule #3: 14-3-3 protein zeta
Macromolecule | Name: 14-3-3 protein zeta / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 28.108514 KDa |
Sequence | String: MSVDKEELVQ RAKLAEQAER YDDMAAAMKE VTETGVELSN EERNLLSVAY KNVVGARRSS WRVISSIEQK TEGSERKQQM AKEYRVKVE KELREICYDV LGLLDKHLIP KASNPESKVF YLKMKGDYYR YLAEVATGET RNSVVEDSQK AYQDAFEISK A KMQPTHPI ...String: MSVDKEELVQ RAKLAEQAER YDDMAAAMKE VTETGVELSN EERNLLSVAY KNVVGARRSS WRVISSIEQK TEGSERKQQM AKEYRVKVE KELREICYDV LGLLDKHLIP KASNPESKVF YLKMKGDYYR YLAEVATGET RNSVVEDSQK AYQDAFEISK A KMQPTHPI RLGLALNFSV FYYEILNSPD KACQLAKQAF DDAIAELDTL NEDSYKDSTL IMQLLRDNLT LWTSDTQGDG DE PAEGGDN UniProtKB: 14-3-3 protein zeta |
-Macromolecule #4: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
Macromolecule | Name: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / type: ligand / ID: 4 / Number of copies: 1 / Formula: AGS |
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Molecular weight | Theoretical: 523.247 Da |
Chemical component information | ![]() ChemComp-AGS: |
-Macromolecule #5: ZINC ION
Macromolecule | Name: ZINC ION / type: ligand / ID: 5 / Number of copies: 2 / Formula: ZN |
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Molecular weight | Theoretical: 65.409 Da |
-Macromolecule #6: ADENOSINE-5'-DIPHOSPHATE
Macromolecule | Name: ADENOSINE-5'-DIPHOSPHATE / type: ligand / ID: 6 / Number of copies: 1 / Formula: ADP |
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Molecular weight | Theoretical: 427.201 Da |
Chemical component information | ![]() ChemComp-ADP: |
-Macromolecule #7: MAGNESIUM ION
Macromolecule | Name: MAGNESIUM ION / type: ligand / ID: 7 / Number of copies: 1 / Formula: MG |
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Molecular weight | Theoretical: 24.305 Da |
-Macromolecule #8: 5-[(2-fluoro-4-iodophenyl)amino]-N-(2-hydroxyethoxy)imidazo[1,5-a...
Macromolecule | Name: 5-[(2-fluoro-4-iodophenyl)amino]-N-(2-hydroxyethoxy)imidazo[1,5-a]pyridine-6-carboxamide type: ligand / ID: 8 / Number of copies: 1 / Formula: LCJ |
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Molecular weight | Theoretical: 456.21 Da |
Chemical component information | ![]() ChemComp-LCJ: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.05 mg/mL |
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Buffer | pH: 7.4 |
Grid | Details: unspecified |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: OTHER / Imaging mode: OTHER / Cs: 2.7 mm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |