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- PDB-6q0k: Structure of a MAPK pathway complex -

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Basic information

Entry
Database: PDB / ID: 6q0k
TitleStructure of a MAPK pathway complex
Components
  • 14-3-3 protein zeta/delta
  • Serine/threonine-protein kinase B-raf
KeywordsSIGNALING PROTEIN/Transferase / TRANSFERASE / SIGNALING PROTEIN-Transferase complex
Function / homology
Function and homology information


synaptic target recognition / Golgi reassembly / positive regulation of axon regeneration / CD4-positive, alpha-beta T cell differentiation / NOTCH4 Activation and Transmission of Signal to the Nucleus / 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 / positive regulation of axon regeneration / CD4-positive, alpha-beta T cell differentiation / NOTCH4 Activation and Transmission of Signal to the Nucleus / 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 / positive regulation of axonogenesis / negative regulation of protein localization to nucleus / regulation of T cell differentiation / Negative feedback regulation of MAPK pathway / KSRP (KHSRP) binds and destabilizes mRNA / Frs2-mediated activation / GP1b-IX-V activation signalling / 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 / regulation of ERK1 and ERK2 cascade / Chk1/Chk2(Cds1) mediated inactivation of Cyclin B:Cdk1 complex / SARS-CoV-2 targets host intracellular signalling and regulatory pathways / protein targeting / postsynaptic modulation of chemical synaptic transmission / cellular response to glucose starvation / SARS-CoV-1 targets host intracellular signalling and regulatory pathways / RHO GTPases activate PKNs / positive regulation of stress fiber assembly / 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 / protein sequestering activity / lung development / cellular response to calcium ion / negative regulation of innate immune response / thymus development / hippocampal mossy fiber to CA3 synapse / animal organ morphogenesis / TP53 Regulates Metabolic Genes / Translocation of SLC2A4 (GLUT4) to the plasma membrane / Deactivation of the beta-catenin transactivating complex / RAF activation / Spry regulation of FGF signaling / Signaling by high-kinase activity BRAF mutants / Negative regulation of NOTCH4 signaling / MAP2K and MAPK activation / visual learning / regulation of protein stability / cellular response to xenobiotic stimulus / epidermal growth factor receptor signaling pathway / centriolar satellite / long-term synaptic potentiation / 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 / intracellular protein localization / melanosome / T cell differentiation in thymus / T cell receptor signaling pathway / MAPK cascade / regulation of cell population proliferation / presynapse / cell body / scaffold protein binding / angiogenesis / protein phosphatase binding / blood microparticle / vesicle / DNA-binding transcription factor binding / negative regulation of neuron apoptotic process / transmembrane transporter binding / protein phosphorylation
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)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 6.8 Å
AuthorsPark, E. / Rawson, S. / Jeon, H. / Eck, M.J.
Funding support United States, 2items
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, 2019Deposition site: RCSB / Processing site: RCSB
Revision 1.0Oct 9, 2019Provider: repository / Type: Initial release
Revision 1.1Dec 4, 2019Group: Author supporting evidence / Category: pdbx_audit_support / Item: _pdbx_audit_support.funding_organization
Revision 1.2Apr 22, 2020Group: Database references / Category: citation / citation_author
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year
Revision 1.3Nov 6, 2024Group: Data collection / Database references ...Data collection / Database references / Refinement description / Structure summary
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / em_3d_fitting_list / em_admin / pdbx_entry_details / pdbx_initial_refinement_model / pdbx_modification_feature
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession ..._database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_3d_fitting_list.accession_code / _em_3d_fitting_list.initial_refinement_model_id / _em_3d_fitting_list.source_name / _em_3d_fitting_list.type / _em_admin.last_update / _pdbx_entry_details.has_protein_modification

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Structure visualization

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Assembly

Deposited unit
A: Serine/threonine-protein kinase B-raf
B: Serine/threonine-protein kinase B-raf
X: 14-3-3 protein zeta/delta
Y: 14-3-3 protein zeta/delta


Theoretical massNumber of molelcules
Total (without water)234,2004
Polymers234,2004
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: light scattering
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Serine/threonine-protein kinase B-raf / Proto-oncogene B-Raf / p94 / v-Raf murine sarcoma viral oncogene homolog B1


Mass: 89322.812 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: BRAF, BRAF1, RAFB1 / Production host: Homo sapiens (human)
References: UniProt: P15056, non-specific serine/threonine protein kinase
#2: Protein 14-3-3 protein zeta/delta / Protein kinase C inhibitor protein 1 / KCIP-1


Mass: 27777.092 Da / Num. of mol.: 2 / Source method: isolated from a natural source / Source: (natural) Homo sapiens (human) / References: UniProt: P63104
Has ligand of interestY
Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: ERK pathway complex / Type: COMPLEX / Entity ID: all / Source: MULTIPLE SOURCES
Molecular weightValue: 233 kDa/nm / Experimental value: YES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Spodoptera frugiperda (fall armyworm)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: unspecified
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: OTHER
Electron lensMode: OTHER
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: NONE
3D reconstructionResolution: 6.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 66215 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Atomic model building

3D fitting-ID: 1 / Source name: PDB / Type: experimental model

IDPDB-IDPdb chain-IDAccession codeInitial refinement model-ID
14MNE

4mne

A4MNE1
24MNE

4mne

B4MNE1
33NKX

3nkx

X3NKX2
43NKX

3nkx

Y3NKX2

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