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- EMDB-27429: Cryo-EM structure of a RAS/RAF complex (state 2) -

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Entry
Database: EMDB / ID: EMD-27429
TitleCryo-EM structure of a RAS/RAF complex (state 2)
Map data
Sample
  • Complex: Kinase Complex state-1
    • Protein or peptide: Serine/threonine-protein kinase B-raf
    • Protein or peptide: Dual specificity mitogen-activated protein kinase kinase 1
    • Protein or peptide: 14-3-3 protein zeta
  • Protein or peptide: GTPase KRas isoform X2
  • Ligand: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION
  • Ligand: 5-[(2-fluoro-4-iodophenyl)amino]-N-(2-hydroxyethoxy)imidazo[1,5-a]pyridine-6-carboxamide
  • Ligand: PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER
Keywordskinase complex / TRANSFERASE
Function / homology
Function and homology information


epithelial cell proliferation involved in lung morphogenesis / positive regulation of endodermal cell differentiation / trehalose metabolism in response to stress / CD4-positive, alpha-beta T cell differentiation / placenta blood vessel development / CD4-positive or CD8-positive, alpha-beta T cell lineage commitment / regulation of axon regeneration / mitogen-activated protein kinase kinase / negative regulation of synaptic vesicle exocytosis / type B pancreatic cell proliferation ...epithelial cell proliferation involved in lung morphogenesis / positive regulation of endodermal cell differentiation / trehalose metabolism in response to stress / CD4-positive, alpha-beta T cell differentiation / placenta blood vessel development / CD4-positive or CD8-positive, alpha-beta T cell lineage commitment / regulation of axon regeneration / mitogen-activated protein kinase kinase / negative regulation of synaptic vesicle exocytosis / type B pancreatic cell proliferation / labyrinthine layer development / head morphogenesis / MAP-kinase scaffold activity / Signalling to p38 via RIT and RIN / cerebellar cortex formation / 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 / Signaling by MAP2K mutants / negative regulation of fibroblast migration / positive regulation of glucose transmembrane transport / establishment of protein localization to membrane / regulation of Golgi inheritance / trachea formation / mitogen-activated protein kinase kinase binding / regulation of T cell differentiation / Negative feedback regulation of MAPK pathway / regulation of early endosome to late endosome transport / positive regulation of axonogenesis / regulation of stress-activated MAPK cascade / Frs2-mediated activation / protein kinase activator activity / ERBB2-ERBB3 signaling pathway / stress fiber assembly / positive regulation of axon regeneration / endodermal cell differentiation / face development / MAPK3 (ERK1) activation / synaptic vesicle exocytosis / somatic stem cell population maintenance / Bergmann glial cell differentiation / MAP kinase kinase activity / thyroid gland development / Uptake and function of anthrax toxins / MAP kinase kinase kinase activity / Schwann cell development / negative regulation of endothelial cell apoptotic process / positive regulation of substrate adhesion-dependent cell spreading / keratinocyte differentiation / response to cAMP / positive regulation of stress fiber assembly / ERK1 and ERK2 cascade / cellular response to calcium ion / myelination / protein serine/threonine/tyrosine kinase activity / protein serine/threonine kinase activator activity / substrate adhesion-dependent cell spreading / MAP3K8 (TPL2)-dependent MAPK1/3 activation / cellular response to nerve growth factor stimulus / small monomeric GTPase / insulin-like growth factor receptor signaling pathway / thymus development / Signal transduction by L1 / long-term synaptic potentiation / cell motility / 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 / positive regulation of protein serine/threonine kinase activity / response to peptide hormone / neuron differentiation / 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 / chemotaxis / MAPK cascade / cellular senescence / Signaling by BRAF and RAF1 fusions / cellular response to xenobiotic stimulus / late endosome / presynapse / positive regulation of peptidyl-serine phosphorylation / T cell differentiation in thymus / cell body / regulation of cell population proliferation / heart development / T cell receptor signaling pathway / scaffold protein binding / protein tyrosine kinase activity / negative regulation of neuron apoptotic process / positive regulation of ERK1 and ERK2 cascade / early endosome
Similarity search - Function
Raf-like Ras-binding domain / Raf-like Ras-binding / Ras-binding domain (RBD) profile. / Raf-like Ras-binding domain / Diacylglycerol/phorbol-ester binding / small GTPase Rab1 family profile. / small GTPase Rho family profile. / Phorbol esters/diacylglycerol binding domain (C1 domain) / Zinc finger phorbol-ester/DAG-type signature. / Zinc finger phorbol-ester/DAG-type profile. ...Raf-like Ras-binding domain / Raf-like Ras-binding / Ras-binding domain (RBD) profile. / Raf-like Ras-binding domain / Diacylglycerol/phorbol-ester binding / small GTPase Rab1 family profile. / small GTPase Rho family profile. / Phorbol esters/diacylglycerol binding domain (C1 domain) / Zinc finger phorbol-ester/DAG-type signature. / Zinc finger phorbol-ester/DAG-type profile. / Protein kinase C conserved region 1 (C1) domains (Cysteine-rich domains) / Protein kinase C-like, phorbol ester/diacylglycerol-binding domain / C1-like domain superfamily / 14-3-3 proteins signature 2. / 14-3-3 protein, conserved site / 14-3-3 proteins signature 1. / 14-3-3 protein / 14-3-3 homologues / 14-3-3 domain / 14-3-3 domain superfamily / 14-3-3 protein / Small GTPase, Ras-type / small GTPase Ras family profile. / Rho (Ras homology) subfamily of Ras-like small GTPases / Ras subfamily of RAS small GTPases / Small GTPase / Ras family / Rab subfamily of small GTPases / Small GTP-binding protein domain / Protein tyrosine and serine/threonine kinase / Serine-threonine/tyrosine-protein kinase, catalytic domain / Ubiquitin-like domain superfamily / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Protein kinase domain / Serine/Threonine protein kinases, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
GTPase KRas / Serine/threonine-protein kinase B-raf / Dual specificity mitogen-activated protein kinase kinase 1 / 14-3-3 protein zeta
Similarity search - Component
Biological speciesHomo sapiens (human) / Spodoptera exigua (beet armyworm)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsEck MJ / Jeon H / Park E / Rawson S
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI)P50CA165962 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)R35CA242461 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)R50CA220830 United States
CitationJournal: Nat Commun / Year: 2023
Title: Cryo-EM structure of a RAS/RAF recruitment complex.
Authors: Eunyoung Park / Shaun Rawson / Anna Schmoker / Byeong-Won Kim / Sehee Oh / Kangkang Song / Hyesung Jeon / Michael J Eck /
Abstract: RAF-family kinases are activated by recruitment to the plasma membrane by GTP-bound RAS, whereupon they initiate signaling through the MAP kinase cascade. Prior structural studies of KRAS with RAF ...RAF-family kinases are activated by recruitment to the plasma membrane by GTP-bound RAS, whereupon they initiate signaling through the MAP kinase cascade. Prior structural studies of KRAS with RAF have focused on the isolated RAS-binding and cysteine-rich domains of RAF (RBD and CRD, respectively), which interact directly with RAS. Here we describe cryo-EM structures of a KRAS bound to intact BRAF in an autoinhibited state with MEK1 and a 14-3-3 dimer. Analysis of this KRAS/BRAF/MEK1/14-3-3 complex reveals KRAS bound to the RAS-binding domain of BRAF, captured in two orientations. Core autoinhibitory interactions in the complex are unperturbed by binding of KRAS and in vitro activation studies confirm that KRAS binding is insufficient to activate BRAF, absent membrane recruitment. These structures illustrate the separability of binding and activation of BRAF by RAS and suggest stabilization of this pre-activation intermediate as an alternative therapeutic strategy to blocking binding of KRAS.
History
DepositionJun 24, 2022-
Header (metadata) releaseJul 5, 2023-
Map releaseJul 5, 2023-
UpdateAug 9, 2023-
Current statusAug 9, 2023Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_27429.png

Downloads & links

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Map

FileDownload / File: emd_27429.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Voxel sizeX=Y=Z: 1.03 Å
Density
Contour LevelBy AUTHOR: 0.25
Minimum - Maximum-3.1610074 - 4.5039186
Average (Standard dev.)0.00038661846 (±0.06636033)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 263.68 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: #1

Fileemd_27429_additional_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_27429_half_map_1.map
Projections & Slices
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Histogram

Histogram (log scale)

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Half map: #1

Fileemd_27429_half_map_2.map
Projections & Slices
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Histogram (log scale)

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Sample components

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Entire : Kinase Complex state-1

EntireName: Kinase Complex state-1
Components
  • Complex: Kinase Complex state-1
    • Protein or peptide: Serine/threonine-protein kinase B-raf
    • Protein or peptide: Dual specificity mitogen-activated protein kinase kinase 1
    • Protein or peptide: 14-3-3 protein zeta
  • Protein or peptide: GTPase KRas isoform X2
  • Ligand: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
  • Ligand: ZINC ION
  • Ligand: MAGNESIUM ION
  • Ligand: 5-[(2-fluoro-4-iodophenyl)amino]-N-(2-hydroxyethoxy)imidazo[1,5-a]pyridine-6-carboxamide
  • Ligand: PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER

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Supramolecule #1: Kinase Complex state-1

SupramoleculeName: Kinase Complex state-1 / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 225 KDa

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Macromolecule #1: Serine/threonine-protein kinase B-raf

MacromoleculeName: 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
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 89.402789 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: 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

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Macromolecule #2: Dual specificity mitogen-activated protein kinase kinase 1

MacromoleculeName: Dual specificity mitogen-activated protein kinase kinase 1
type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO / EC number: mitogen-activated protein kinase kinase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 45.835414 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: 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 PSTPTHAAG

UniProtKB: Dual specificity mitogen-activated protein kinase kinase 1

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Macromolecule #3: 14-3-3 protein zeta

MacromoleculeName: 14-3-3 protein zeta / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Spodoptera exigua (beet armyworm)
Molecular weightTheoretical: 28.108514 KDa
Recombinant expressionOrganism: Spodoptera frugiperda (fall armyworm)
SequenceString: 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

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Macromolecule #4: GTPase KRas isoform X2

MacromoleculeName: GTPase KRas isoform X2 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 21.868625 KDa
Recombinant expressionOrganism: Escherichia coli (E. coli)
SequenceString:
MHHHHHHGSL VPRSENLYFQ GSMTEYKLVV VGAGGVGKSA LTIQLIQNHF VDEYDPTIED SYRKQVVIDG ETCLLDILDT AGQEEYSAM RDQYMRTGEG FLCVFAINNT KSFEDIHHYR EQIKRVKDSE DVPMVLVGNK CDLPSRTVDT KQAQDLARSY G IPFIETSA KTRQGVDDAF YTLVREIRKH KEK

UniProtKB: GTPase KRas

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Macromolecule #5: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER

MacromoleculeName: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / type: ligand / ID: 5 / Number of copies: 2 / Formula: AGS
Molecular weightTheoretical: 523.247 Da
Chemical component information

ChemComp-AGS:
PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER / ATP-gamma-S, energy-carrying molecule analogue*YM

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Macromolecule #6: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 6 / Number of copies: 2 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Macromolecule #7: MAGNESIUM ION

MacromoleculeName: MAGNESIUM ION / type: ligand / ID: 7 / Number of copies: 2 / Formula: MG
Molecular weightTheoretical: 24.305 Da

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Macromolecule #8: 5-[(2-fluoro-4-iodophenyl)amino]-N-(2-hydroxyethoxy)imidazo[1,5-a...

MacromoleculeName: 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
Molecular weightTheoretical: 456.21 Da
Chemical component information

ChemComp-LCJ:
5-[(2-fluoro-4-iodophenyl)amino]-N-(2-hydroxyethoxy)imidazo[1,5-a]pyridine-6-carboxamide

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Macromolecule #9: PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER

MacromoleculeName: PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER / type: ligand / ID: 9 / Number of copies: 1 / Formula: GNP
Molecular weightTheoretical: 522.196 Da
Chemical component information

ChemComp-GNP:
PHOSPHOAMINOPHOSPHONIC ACID-GUANYLATE ESTER / GppNHp, GMPPNP, energy-carrying molecule analogue*YM / 5'-Guanylyl imidodiphosphate

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE / Instrument: LEICA EM GP

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: OTHER / Nominal defocus max: 2.8000000000000003 µm / Nominal defocus min: 1.8 µm
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 45.6 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 190489

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