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- EMDB-70053: Autoinhibited BRAF:(14-3-3)2:MEK complex from Insect cells -

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Basic information

Entry
Database: EMDB / ID: EMD-70053
TitleAutoinhibited BRAF:(14-3-3)2:MEK complex from Insect cells
Map data
Sample
  • Complex: Autoinhibited B-Raf:(14-3-3)2:MEK complex
    • 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/delta
  • Ligand: ZINC ION
  • Ligand: N-(3-fluoro-4-{[4-methyl-2-oxo-7-(pyrimidin-2-yloxy)-2H-chromen-3-yl]methyl}pyridin-2-yl)-N'-methylsulfuric diamide
KeywordsB-Raf / MEK / 14-3-3 / B-Raf complex / B-Raf monomer / Inactive B-Raf / Serine/threonine-protein kinase B-raf / RBD / signaling protein / SIGNALING PROTEIN-TRANSFERASE complex
Function / homology
Function and homology information


synaptic target recognition / negative regulation of homotypic cell-cell adhesion / Golgi reassembly / regulation of vascular associated smooth muscle contraction / negative regulation of hypoxia-induced intrinsic apoptotic signaling pathway / NOTCH4 Activation and Transmission of Signal to the Nucleus / respiratory system process / mitogen-activated protein kinase kinase / establishment of Golgi localization / melanosome transport ...synaptic target recognition / negative regulation of homotypic cell-cell adhesion / Golgi reassembly / regulation of vascular associated smooth muscle contraction / negative regulation of hypoxia-induced intrinsic apoptotic signaling pathway / NOTCH4 Activation and Transmission of Signal to the Nucleus / respiratory system process / mitogen-activated protein kinase kinase / establishment of Golgi localization / melanosome transport / tube formation / Golgi inheritance / Signalling to p38 via RIT and RIN / MAP kinase scaffold activity / positive regulation of muscle contraction / ARMS-mediated activation / establishment of protein localization to membrane / Signaling by MAP2K mutants / SHOC2 M1731 mutant abolishes MRAS complex function / Gain-of-function MRAS complexes activate RAF signaling / Rap1 signalling / regulation of synapse maturation / positive regulation of D-glucose transmembrane transport / vesicle transport along microtubule / regulation of Golgi inheritance / mitogen-activated protein kinase kinase kinase binding / negative regulation of protein localization to nucleus / positive regulation of protein serine/threonine kinase activity / triglyceride homeostasis / KSRP (KHSRP) binds and destabilizes mRNA / regulation of early endosome to late endosome transport / Negative feedback regulation of MAPK pathway / regulation of stress-activated MAPK cascade / GP1b-IX-V activation signalling / Frs2-mediated activation / MAPK3 (ERK1) activation / ERBB2-ERBB3 signaling pathway / regulation of neurotransmitter receptor localization to postsynaptic specialization membrane / MAP kinase kinase activity / lung development / response to axon injury / positive regulation of ATP biosynthetic process / neuromuscular junction development / ERK1 and ERK2 cascade / Regulation of localization of FOXO transcription factors / Interleukin-3, Interleukin-5 and GM-CSF signaling / Uptake and function of anthrax toxins / positive regulation of peptidyl-serine phosphorylation / phosphoserine residue binding / Activation of BAD and translocation to mitochondria / regulation of ERK1 and ERK2 cascade / MAP kinase kinase kinase activity / protein kinase activator activity / Schwann cell development / postsynaptic modulation of chemical synaptic transmission / cellular response to glucose starvation / SARS-CoV-2 targets host intracellular signalling and regulatory pathways / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / RHO GTPases activate PKNs / Chk1/Chk2(Cds1) mediated inactivation of Cyclin B:Cdk1 complex / myelination / insulin-like growth factor receptor signaling pathway / animal organ morphogenesis / protein serine/threonine/tyrosine kinase activity / Transcriptional and post-translational regulation of MITF-M expression and activity / cellular response to calcium ion / positive regulation of autophagy / neuron projection morphogenesis / negative regulation of innate immune response / response to glucocorticoid / negative regulation of TORC1 signaling / protein serine/threonine kinase activator activity / dendrite cytoplasm / hippocampal mossy fiber to CA3 synapse / Signal transduction by L1 / MAP3K8 (TPL2)-dependent MAPK1/3 activation / TP53 Regulates Metabolic Genes / Translocation of SLC2A4 (GLUT4) to the plasma membrane / regulation of protein stability / positive regulation of transcription elongation by RNA polymerase II / RAF activation / Signaling by high-kinase activity BRAF mutants / Spry regulation of FGF signaling / MAP2K and MAPK activation / protein sequestering activity / Deactivation of the beta-catenin transactivating complex / Negative regulation of NOTCH4 signaling / cellular senescence / chemotaxis / small GTPase binding / epidermal growth factor receptor signaling pathway / intracellular protein localization / angiogenesis / 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 / Negative regulation of MAPK pathway / melanosome
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 / 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 / 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 / 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
Similarity search - Domain/homology
Serine/threonine-protein kinase B-raf / 14-3-3 protein zeta/delta / Dual specificity mitogen-activated protein kinase kinase 1
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.83 Å
AuthorsMartinez Fiesco JA / Zhang P
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Cancer Institute (NIH/NCI) United States
CitationJournal: To Be Published
Title: Autoinhibited BRAF:(14-3-3)2:MEK complex from Insect cells
Authors: Martinez Fiesco JA / Zhang P
History
DepositionApr 4, 2025-
Header (metadata) releaseSep 10, 2025-
Map releaseSep 10, 2025-
UpdateSep 10, 2025-
Current statusSep 10, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_70053.png

Downloads & links

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Map

FileDownload / File: emd_70053.map.gz / Format: CCP4 / Size: 149.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.81 Å/pix.
x 340 pix.
= 275.4 Å		0.81 Å/pix.
x 340 pix.
= 275.4 Å		0.81 Å/pix.
x 340 pix.
= 275.4 Å

Surface

Projections

Slices (1/3)

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.81 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.079
Minimum - Maximum-0.38099712 - 0.534253
Average (Standard dev.)0.00018087454 (±0.01229643)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions340340340
Spacing340340340
CellA=B=C: 275.4 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #1

Fileemd_70053_half_map_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_70053_half_map_2.map
Projections & Slices
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Histogram

Histogram (log scale)

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Sample components

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Entire : Autoinhibited B-Raf:(14-3-3)2:MEK complex

EntireName: Autoinhibited B-Raf:(14-3-3)2:MEK complex
Components
  • Complex: Autoinhibited B-Raf:(14-3-3)2:MEK complex
    • 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/delta
  • Ligand: ZINC ION
  • Ligand: N-(3-fluoro-4-{[4-methyl-2-oxo-7-(pyrimidin-2-yloxy)-2H-chromen-3-yl]methyl}pyridin-2-yl)-N'-methylsulfuric diamide

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Supramolecule #1: Autoinhibited B-Raf:(14-3-3)2:MEK complex

SupramoleculeName: Autoinhibited B-Raf:(14-3-3)2:MEK complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#3
Source (natural)Organism: Homo sapiens (human)

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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: 84.697695 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MAALSGGGGG GAEPGQALFN GDMEPEAGAG AGAAASSAAD PAIPEEVWNI KQMIKLTQEH IEALLDKFGG EHNPPSIYLE AYEEYTSKL DALQQREQQL LESLGNGTDF SVSSSASMDT VTSSSSSSLS VLPSSLSVFQ NPTDVARSNP KSPQKPIVRV F LPNKQRTV ...String:
MAALSGGGGG GAEPGQALFN GDMEPEAGAG AGAAASSAAD PAIPEEVWNI KQMIKLTQEH IEALLDKFGG EHNPPSIYLE AYEEYTSKL DALQQREQQL LESLGNGTDF SVSSSASMDT VTSSSSSSLS VLPSSLSVFQ NPTDVARSNP KSPQKPIVRV F LPNKQRTV VPARCGVTVR DSLKKALMMR GLIPECCAVY RIQDGEKKPI GWDTDISWLT GEELHVEVLE NVPLTTHNFV RK TFFTLAF CDFCRKLLFQ GFRCQTCGYK FHQRCSTEVP LMCVNYDQLD LLFVSKFFEH HPIPQEEASL AETALTSGSS PSA PASDSI GPQILTSPSP SKSIPIPQPF RPADEDHRNQ FGQRDRSS(SEP)A PNVHINTIEP VNIDDLIRDQ GFRGDGGSTT GLSATPPAS LPGSLTNVKA LQKSPGPQRE RKSSSSSEDR NRMKTLGRRD SSDDWEIPDG QITVGQRIGS GSFGTVYKGK W HGDVAVKM LNVTAPTPQQ LQAFKNEVGV LRKTRHVNIL LFMGYSTKPQ LAIVTQWCEG SSLYHHLHII ETKFEMIKLI DI ARQTAQG MDYLHAKSII HRDLKSNNIF LHEDLTVKIG DFGLATVKSR WSGSHQFEQL SGSILWMAPE VIRMQDKNPY SFQ SDVYAF GIVLYELMTG QLPYSNINNR DQIIFMVGRG YLSPDLSKVR SNCPKAMKRL MAECLKKKRD ERPLFPQILA SIEL LARSL PKIHRSA(SEP)EP SLNRAGFQTE DFSLYACASP KTPIQAGGYG AFPVH

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: 43.493938 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MPKKKPTPIQ LNPAPDGSAV NGTSSAETNL EALQKKLEEL ELDEQQRKRL EAFLTQKQKV GELKDDDFEK ISELGAGNGG VVFKVSHKP SGLVMARKLI HLEIKPAIRN QIIRELQVLH ECNSPYIVGF YGAFYSDGEI SICMEHMDGG SLDQVLKKAG R IPEQILGK ...String:
MPKKKPTPIQ LNPAPDGSAV NGTSSAETNL EALQKKLEEL ELDEQQRKRL EAFLTQKQKV GELKDDDFEK ISELGAGNGG VVFKVSHKP SGLVMARKLI HLEIKPAIRN QIIRELQVLH ECNSPYIVGF YGAFYSDGEI SICMEHMDGG SLDQVLKKAG R IPEQILGK VSIAVIKGLT YLREKHKIMH RDVKPSNILV NSRGEIKLCD FGVSGQLIDS MANSFVGTRS YMSPERLQGT HY SVQSDIW SMGLSLVEMA VGRYPIPPPD AKELELMFGC QVEGDAAETP PRPRTPGRPL SSYGMDSRPP MAIFELLDYI VNE PPPKLP SGVFSLEFQD FVNKCLIKNP AERADLKQLM VHAFIKRSDA EEVDFAGWLC STIGLNQPST PTHAAGV

UniProtKB: Dual specificity mitogen-activated protein kinase kinase 1

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Macromolecule #3: 14-3-3 protein zeta/delta

MacromoleculeName: 14-3-3 protein zeta/delta / type: protein_or_peptide / ID: 3 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 27.777092 KDa
Recombinant expressionOrganism: Trichoplusia ni (cabbage looper)
SequenceString: MDKNELVQKA KLAEQAERYD DMAACMKSVT EQGAELSNEE RNLLSVAYKN VVGARRSSWR VVSSIEQKTE GAEKKQQMAR EYREKIETE LRDICNDVLS LLEKFLIPNA SQAESKVFYL KMKGDYYRYL AEVAAGDDKK GIVDQSQQAY QEAFEISKKE M QPTHPIRL ...String:
MDKNELVQKA KLAEQAERYD DMAACMKSVT EQGAELSNEE RNLLSVAYKN VVGARRSSWR VVSSIEQKTE GAEKKQQMAR EYREKIETE LRDICNDVLS LLEKFLIPNA SQAESKVFYL KMKGDYYRYL AEVAAGDDKK GIVDQSQQAY QEAFEISKKE M QPTHPIRL GLALNFSVFY YEILNSPEKA CSLAKTAFDE AIAELDTLSE ESYKDSTLIM QLLRDNLTLW TSDTQGDEAE AG EGGEN

UniProtKB: 14-3-3 protein zeta/delta

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Macromolecule #4: ZINC ION

MacromoleculeName: ZINC ION / type: ligand / ID: 4 / Number of copies: 2 / Formula: ZN
Molecular weightTheoretical: 65.409 Da

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Macromolecule #5: N-(3-fluoro-4-{[4-methyl-2-oxo-7-(pyrimidin-2-yloxy)-2H-chromen-3...

MacromoleculeName: N-(3-fluoro-4-{[4-methyl-2-oxo-7-(pyrimidin-2-yloxy)-2H-chromen-3-yl]methyl}pyridin-2-yl)-N'-methylsulfuric diamide
type: ligand / ID: 5 / Number of copies: 1 / Formula: CHU
Molecular weightTheoretical: 471.462 Da
Chemical component information

ChemComp-CHU:
N-(3-fluoro-4-{[4-methyl-2-oxo-7-(pyrimidin-2-yloxy)-2H-chromen-3-yl]methyl}pyridin-2-yl)-N'-methylsulfuric diamide

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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: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS TALOS
Image recordingFilm or detector model: GATAN K3 BIOCONTINUUM (6k x 4k) / Average electron dose: 50.0 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.8 µm

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

7mfd

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.83 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 144979
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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