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- PDB-8a8m: Structure of the MAPK p38alpha in complex with its activating MAP... -
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Basic information
Entry | Database: PDB / ID: 8a8m | ||||||
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Title | Structure of the MAPK p38alpha in complex with its activating MAP2K MKK6 | ||||||
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![]() | IMMUNE SYSTEM / Kinase / Signalling / MAP kinase / phosphoryl transfer | ||||||
Function / homology | ![]() cellular response to sorbitol / ovulation cycle process / nucleotide-binding domain, leucine rich repeat containing receptor signaling pathway / JUN kinase kinase activity / mitogen-activated protein kinase kinase / positive regulation of prostaglandin secretion / stress-activated protein kinase signaling cascade / positive regulation of cyclase activity / Activation of PPARGC1A (PGC-1alpha) by phosphorylation / negative regulation of cold-induced thermogenesis ...cellular response to sorbitol / ovulation cycle process / nucleotide-binding domain, leucine rich repeat containing receptor signaling pathway / JUN kinase kinase activity / mitogen-activated protein kinase kinase / positive regulation of prostaglandin secretion / stress-activated protein kinase signaling cascade / positive regulation of cyclase activity / Activation of PPARGC1A (PGC-1alpha) by phosphorylation / negative regulation of cold-induced thermogenesis / regulation of synaptic membrane adhesion / CD163 mediating an anti-inflammatory response / stress-induced premature senescence / cell surface receptor protein serine/threonine kinase signaling pathway / 3'-UTR-mediated mRNA stabilization / positive regulation of myoblast fusion / KSRP (KHSRP) binds and destabilizes mRNA / cartilage condensation / cellular response to UV-B / positive regulation of muscle cell differentiation / Platelet sensitization by LDL / mitogen-activated protein kinase p38 binding / Myogenesis / positive regulation of myotube differentiation / NFAT protein binding / regulation of cytokine production involved in inflammatory response / D-glucose import / Activation of the AP-1 family of transcription factors / PI5P Regulates TP53 Acetylation / p38MAPK cascade / ERK/MAPK targets / Regulation of MITF-M-dependent genes involved in pigmentation / fatty acid oxidation / MAP kinase kinase activity / cellular response to lipoteichoic acid / response to muramyl dipeptide / response to dietary excess / Uptake and function of anthrax toxins / RHO GTPases Activate NADPH Oxidases / MAP kinase activity / regulation of ossification / cellular response to vascular endothelial growth factor stimulus / signal transduction in response to DNA damage / JUN kinase activity / mitogen-activated protein kinase / chondrocyte differentiation / negative regulation of hippo signaling / positive regulation of myoblast differentiation / vascular endothelial growth factor receptor signaling pathway / skeletal muscle tissue development / stress-activated MAPK cascade / positive regulation of cardiac muscle cell proliferation / cardiac muscle contraction / p38MAPK events / striated muscle cell differentiation / response to muscle stretch / positive regulation of brown fat cell differentiation / positive regulation of interleukin-12 production / osteoclast differentiation / lipopolysaccharide-mediated signaling pathway / positive regulation of erythrocyte differentiation / DNA damage checkpoint signaling / regulation of signal transduction by p53 class mediator / response to ischemia / cellular response to ionizing radiation / positive regulation of D-glucose import / activated TAK1 mediates p38 MAPK activation / stem cell differentiation / response to insulin / placenta development / negative regulation of inflammatory response to antigenic stimulus / negative regulation of canonical Wnt signaling pathway / NOD1/2 Signaling Pathway / cell morphogenesis / PKR-mediated signaling / bone development / cellular response to virus / platelet activation / VEGFA-VEGFR2 Pathway / positive regulation of protein import into nucleus / Interleukin-1 signaling / glucose metabolic process / spindle pole / chemotaxis / positive regulation of reactive oxygen species metabolic process / osteoblast differentiation / cellular senescence / ADP signalling through P2Y purinoceptor 1 / MAPK cascade / cellular response to tumor necrosis factor / peptidyl-serine phosphorylation / cellular response to lipopolysaccharide / protein tyrosine kinase activity / protein phosphatase binding / secretory granule lumen / Oxidative Stress Induced Senescence / angiogenesis / Regulation of TP53 Activity through Phosphorylation / ficolin-1-rich granule lumen / transcription by RNA polymerase II Similarity search - Function | ||||||
Biological species | ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 4 Å | ||||||
![]() | Bowler, M.W. / Juyoux, P. / Pellegrini, E. | ||||||
Funding support | 1items
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![]() | ![]() Title: Architecture of the MKK6-p38α complex defines the basis of MAPK specificity and activation. Authors: Pauline Juyoux / Ioannis Galdadas / Dorothea Gobbo / Jill von Velsen / Martin Pelosse / Mark Tully / Oscar Vadas / Francesco Luigi Gervasio / Erika Pellegrini / Matthew W Bowler / ![]() ![]() ![]() Abstract: The mitogen-activated protein kinase (MAPK) p38α is a central component of signaling in inflammation and the immune response and is, therefore, an important drug target. Little is known about the ...The mitogen-activated protein kinase (MAPK) p38α is a central component of signaling in inflammation and the immune response and is, therefore, an important drug target. Little is known about the molecular mechanism of its activation by double phosphorylation from MAPK kinases (MAP2Ks), because of the challenge of trapping a transient and dynamic heterokinase complex. We applied a multidisciplinary approach to generate a structural model of p38α in complex with its MAP2K, MKK6, and to understand the activation mechanism. Integrating cryo-electron microscopy with molecular dynamics simulations, hydrogen-deuterium exchange mass spectrometry, and experiments in cells, we demonstrate a dynamic, multistep phosphorylation mechanism, identify catalytically relevant interactions, and show that MAP2K-disordered amino termini determine pathway specificity. Our work captures a fundamental step of cell signaling: a kinase phosphorylating its downstream target kinase. #1: ![]() Title: Architecture of the MKK6-p38 alpha complex defines the basis of MAPK specificity and activation Authors: Juyoux, P. / Galdadas, I. / Gobbo, D. / Tully, M. / Gervasio, F.L. / Pellegrini, E. / Bowler, M.W. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 148.2 KB | Display | ![]() |
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PDB format | ![]() | 110.1 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 15233MC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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Components
#1: Protein | Mass: 43647.727 Da / Num. of mol.: 1 / Mutation: T180V Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: Q16539, mitogen-activated protein kinase | ||||||
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#2: Protein | Mass: 41822.844 Da / Num. of mol.: 1 / Mutation: S207D, T211D Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() References: UniProt: P52564, mitogen-activated protein kinase kinase | ||||||
#3: Chemical | #4: Chemical | ChemComp-MG / Has ligand of interest | Y | Has protein modification | N | |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
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Molecular weight | Value: 0.0802 MDa / Experimental value: YES | ||||||||||||||||||||||||
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Source (recombinant) |
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Buffer solution | pH: 7.5 | ||||||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.48 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||||||
Specimen support | Grid material: GOLD / Grid type: UltrAuFoil R1.2/1.3 | ||||||||||||||||||||||||
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 298 K / Details: blot for 3.5 seconds |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 215000 X / Nominal defocus max: 3000 nm / Nominal defocus min: 1500 nm / Cs: 2.7 mm / C2 aperture diameter: 50 µm |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 70 K / Temperature (min): 70 K |
Image recording | Electron dose: 62.77 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Num. of grids imaged: 3 / Num. of real images: 28633 |
Image scans | Movie frames/image: 40 |
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Processing
Software | Name: PHENIX / Version: 1.20.1_4487: / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||
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EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 35123 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: RIGID BODY FIT / Space: REAL | |||||||||||||||||||||||||||||||||||||||||||||
Atomic model building |
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Refine LS restraints |
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