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- EMDB-20551: Structure of a MAPK pathway complex -

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Basic information

Entry
Database: EMDB / ID: EMD-20551
TitleStructure of a MAPK pathway complex
Map dataStructure of a MAPK pathway complex
Sample
  • Complex: ERK pathway complex
    • Protein or peptide: Serine/threonine-protein kinase B-raf
    • Protein or peptide: 14-3-3 protein zeta/delta
KeywordsTRANSFERASE / SIGNALING PROTEIN-Transferase complex
Function / homology
Function and homology information


synaptic target recognition / Golgi reassembly / CD4-positive, alpha-beta T cell differentiation / NOTCH4 Activation and Transmission of Signal to the Nucleus / positive regulation of axon regeneration / CD4-positive or CD8-positive, alpha-beta T cell lineage commitment / negative regulation of synaptic vesicle exocytosis / establishment of Golgi localization / Signalling to p38 via RIT and RIN / respiratory system process ...synaptic target recognition / Golgi reassembly / CD4-positive, alpha-beta T cell differentiation / NOTCH4 Activation and Transmission of Signal to the Nucleus / positive regulation of axon regeneration / CD4-positive or CD8-positive, alpha-beta T cell lineage commitment / negative regulation of synaptic vesicle exocytosis / establishment of Golgi localization / Signalling to p38 via RIT and RIN / respiratory system process / head morphogenesis / ARMS-mediated activation / tube formation / endothelial cell apoptotic process / myeloid progenitor cell differentiation / regulation of synapse maturation / SHOC2 M1731 mutant abolishes MRAS complex function / Gain-of-function MRAS complexes activate RAF signaling / Rap1 signalling / negative regulation of fibroblast migration / positive regulation of D-glucose transmembrane transport / establishment of protein localization to membrane / negative regulation of protein localization to nucleus / regulation of T cell differentiation / positive regulation of axonogenesis / KSRP (KHSRP) binds and destabilizes mRNA / Negative feedback regulation of MAPK pathway / GP1b-IX-V activation signalling / Frs2-mediated activation / stress fiber assembly / face development / MAP kinase kinase activity / thyroid gland development / Regulation of localization of FOXO transcription factors / Interleukin-3, Interleukin-5 and GM-CSF signaling / synaptic vesicle exocytosis / somatic stem cell population maintenance / positive regulation of peptidyl-serine phosphorylation / Activation of BAD and translocation to mitochondria / phosphoserine residue binding / MAP kinase kinase kinase activity / negative regulation of endothelial cell apoptotic process / SARS-CoV-2 targets host intracellular signalling and regulatory pathways / regulation of ERK1 and ERK2 cascade / postsynaptic modulation of chemical synaptic transmission / protein targeting / cellular response to glucose starvation / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / RHO GTPases activate PKNs / Chk1/Chk2(Cds1) mediated inactivation of Cyclin B:Cdk1 complex / positive regulation of stress fiber assembly / sperm end piece / ERK1 and ERK2 cascade / negative regulation of TORC1 signaling / positive regulation of substrate adhesion-dependent cell spreading / Transcriptional and post-translational regulation of MITF-M expression and activity / substrate adhesion-dependent cell spreading / lung development / protein sequestering activity / negative regulation of innate immune response / cellular response to calcium ion / sperm principal piece / thymus development / animal organ morphogenesis / hippocampal mossy fiber to CA3 synapse / TP53 Regulates Metabolic Genes / Translocation of SLC2A4 (GLUT4) to the plasma membrane / Deactivation of the beta-catenin transactivating complex / RAF activation / regulation of protein stability / Spry regulation of FGF signaling / Signaling by high-kinase activity BRAF mutants / Negative regulation of NOTCH4 signaling / MAP2K and MAPK activation / visual learning / cellular response to xenobiotic stimulus / epidermal growth factor receptor signaling pathway / centriolar satellite / 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 / Signaling by BRAF and RAF1 fusions / melanosome / intracellular protein localization / long-term synaptic potentiation / T cell differentiation in thymus / sperm midpiece / MAPK cascade / T cell receptor signaling pathway / regulation of cell population proliferation / presynapse / cell body / angiogenesis / scaffold protein binding / protein phosphatase binding / blood microparticle / vesicle / DNA-binding transcription factor binding
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. / Protein kinase C conserved region 1 (C1) domains (Cysteine-rich domains) ...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 / Serine-threonine/tyrosine-protein kinase, catalytic domain / Protein tyrosine and serine/threonine kinase / Ubiquitin-like domain superfamily / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / 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
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 6.8 Å
AuthorsPark E / Rawson S
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)P50CA165962 United States
National Institutes of Health/National Cancer Institute (NIH/NCI)R50CA221830 United States
CitationJournal: Nature / Year: 2019
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
DepositionAug 1, 2019-
Header (metadata) releaseOct 2, 2019-
Map releaseOct 9, 2019-
UpdateNov 6, 2024-
Current statusNov 6, 2024Processing site: RCSB / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.021
  • Imaged by UCSF Chimera
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  • Surface view colored by cylindrical radius
  • Surface level: 0.021
  • Imaged by UCSF Chimera
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  • Surface view with fitted model
  • Atomic models: PDB-6q0k
  • Surface level: 0.021
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_20551.png

Downloads & links

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Map

FileDownload / File: emd_20551.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationStructure of a MAPK pathway complex
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.85 Å/pix.
x 256 pix.
= 217.6 Å		0.85 Å/pix.
x 256 pix.
= 217.6 Å		0.85 Å/pix.
x 256 pix.
= 217.6 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.85 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.021 / Movie #1: 0.021
Minimum - Maximum-0.037883114 - 0.12774667
Average (Standard dev.)0.00048250504 (±0.004253514)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 217.6 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z0.850.850.85
M x/y/z256256256
origin x/y/z0.0000.0000.000
length x/y/z217.600217.600217.600
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS256256256
D min/max/mean-0.0380.1280.000

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Supplemental data

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Sample components

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Entire : ERK pathway complex

EntireName: ERK pathway complex
Components
  • Complex: ERK pathway complex
    • Protein or peptide: Serine/threonine-protein kinase B-raf
    • Protein or peptide: 14-3-3 protein zeta/delta

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Supramolecule #1: ERK pathway complex

SupramoleculeName: ERK pathway complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 233 kDa/nm

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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: 2 / Enantiomer: LEVO / EC number: non-specific serine/threonine protein kinase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 89.322812 KDa
Recombinant expressionOrganism: Homo sapiens (human)
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 RDRSSSAPNV HINT IEPVN IDDLIRDQGF RGDGGSTTGL SATPPASLPG SLTNVKALQK SPGPQRERKS SSSSEDRNRM KTLGRRDSSD DWEIP DGQI TVGQRIGSGS FGTVYKGKWH GDVAVKMLNV TAPTPQQLQA FKNEVGVLRK TRHVNILLFM GYSTKPQLAI VTQWCE GSS LYHHLHIIET KFEMIKLIDI ARQTAQGMDY LHAKSIIHRD LKSNNIFLHE DLTVKIGDFG LATVKSRWSG SHQFEQL SG SILWMAPEVI RMQDKNPYSF QSDVYAFGIV LYELMTGQLP YSNINNRDQI IFMVGRGYLS PDLSKVRSNC PKAMKRLM A ECLKKKRDER PLFPQILASI ELLARSLPKI HRSA(SEP)EPSLN RAGFQTEDFS LYACASPKTP IQAGGYGAFP VHGTS AWSH PQFEK

UniProtKB: Serine/threonine-protein kinase B-raf

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Macromolecule #2: 14-3-3 protein zeta/delta

MacromoleculeName: 14-3-3 protein zeta/delta / type: protein_or_peptide / ID: 2 / Number of copies: 2 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 27.777092 KDa
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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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
GridDetails: unspecified
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: OTHER / Imaging mode: OTHER
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: OTHER
Final reconstructionResolution.type: BY AUTHOR / Resolution: 6.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 66215
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD

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Atomic model buiding 1

Initial model
PDB IDChain

4mne

chain_id: A, source_name: PDB, initial_model_type: experimental model

4mne

chain_id: B, source_name: PDB, initial_model_type: experimental model

3nkx

chain_id: X, source_name: PDB, initial_model_type: experimental model

3nkx

chain_id: Y, source_name: PDB, initial_model_type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-6q0k:
Structure of a MAPK pathway complex

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