+Open data
-Basic information
Entry | Database: PDB / ID: 6w67 | ||||||
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Title | The structure of S172A Keap1-BTB domain | ||||||
Components | Kelch-like ECH-associated protein 1 | ||||||
Keywords | SIGNALING PROTEIN / BTB domain | ||||||
Function / homology | Function and homology information regulation of epidermal cell differentiation / Nuclear events mediated by NFE2L2 / Cul3-RING ubiquitin ligase complex / ubiquitin-like ligase-substrate adaptor activity / centriolar satellite / inclusion body / cellular response to interleukin-4 / regulation of autophagy / actin filament / negative regulation of DNA-binding transcription factor activity ...regulation of epidermal cell differentiation / Nuclear events mediated by NFE2L2 / Cul3-RING ubiquitin ligase complex / ubiquitin-like ligase-substrate adaptor activity / centriolar satellite / inclusion body / cellular response to interleukin-4 / regulation of autophagy / actin filament / negative regulation of DNA-binding transcription factor activity / KEAP1-NFE2L2 pathway / disordered domain specific binding / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Antigen processing: Ubiquitination & Proteasome degradation / cellular response to oxidative stress / Neddylation / midbody / ubiquitin-dependent protein catabolic process / in utero embryonic development / RNA polymerase II-specific DNA-binding transcription factor binding / Potential therapeutics for SARS / protein ubiquitination / Ub-specific processing proteases / endoplasmic reticulum / nucleoplasm / identical protein binding / cytosol / cytoplasm Similarity search - Function | ||||||
Biological species | Homo sapiens (human) | ||||||
Method | X-RAY DIFFRACTION / SYNCHROTRON / FOURIER SYNTHESIS / Resolution: 2.2 Å | ||||||
Authors | Mena, E.L. / Gee, C.L. / Kuriyan, J. / Rape, M. | ||||||
Funding support | United States, 1items
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Citation | Journal: Nature / Year: 2020 Title: Structural basis for dimerization quality control. Authors: Elijah L Mena / Predrag Jevtić / Basil J Greber / Christine L Gee / Brandon G Lew / David Akopian / Eva Nogales / John Kuriyan / Michael Rape / Abstract: Most quality control pathways target misfolded proteins to prevent toxic aggregation and neurodegeneration. Dimerization quality control further improves proteostasis by eliminating complexes of ...Most quality control pathways target misfolded proteins to prevent toxic aggregation and neurodegeneration. Dimerization quality control further improves proteostasis by eliminating complexes of aberrant composition, but how it detects incorrect subunits remains unknown. Here we provide structural insight into target selection by SCF-FBXL17, a dimerization-quality-control E3 ligase that ubiquitylates and helps to degrade inactive heterodimers of BTB proteins while sparing functional homodimers. We find that SCF-FBXL17 disrupts aberrant BTB dimers that fail to stabilize an intermolecular β-sheet around a highly divergent β-strand of the BTB domain. Complex dissociation allows SCF-FBXL17 to wrap around a single BTB domain, resulting in robust ubiquitylation. SCF-FBXL17 therefore probes both shape and complementarity of BTB domains, a mechanism that is well suited to establish quality control of complex composition for recurrent interaction modules. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 6w67.cif.gz | 40 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6w67.ent.gz | 25.5 KB | Display | PDB format |
PDBx/mmJSON format | 6w67.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/w6/6w67 ftp://data.pdbj.org/pub/pdb/validation_reports/w6/6w67 | HTTPS FTP |
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-Related structure data
Related structure data | 6w66C 6w68C 6w69C 6wcqC 4cxiS S: Starting model for refinement C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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Unit cell |
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-Components
#1: Protein | Mass: 14937.227 Da / Num. of mol.: 1 / Fragment: BTB domain / Mutation: S172A Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: KEAP1, INRF2, KIAA0132, KLHL19 / Production host: Escherichia coli BL21(DE3) (bacteria) / Strain (production host): LOBSTR / References: UniProt: Q14145 |
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#2: Water | ChemComp-HOH / |
-Experimental details
-Experiment
Experiment | Method: X-RAY DIFFRACTION / Number of used crystals: 1 |
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-Sample preparation
Crystal | Density Matthews: 2.34 Å3/Da / Density % sol: 47.51 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, hanging drop Details: 160-400 mM lithium acetate and 14-18% PEG 3350 1:1 with protein at 11mg/ml in 150 mM NaCl, 25 mM Tris-HCl pH 8.0, 1 mM TCEP |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N | ||||||||||||||||||||||||||||||
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Diffraction source | Source: SYNCHROTRON / Site: ALS / Beamline: 8.3.1 / Wavelength: 1.11583 Å | ||||||||||||||||||||||||||||||
Detector | Type: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Aug 23, 2018 | ||||||||||||||||||||||||||||||
Radiation | Monochromator: S111 / Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray | ||||||||||||||||||||||||||||||
Radiation wavelength | Wavelength: 1.11583 Å / Relative weight: 1 | ||||||||||||||||||||||||||||||
Reflection | Resolution: 2.2→44.373 Å / Num. obs: 8245 / % possible obs: 100 % / Redundancy: 24.5 % / CC1/2: 1 / Rmerge(I) obs: 0.198 / Rpim(I) all: 0.04 / Rrim(I) all: 0.202 / Net I/σ(I): 16.1 | ||||||||||||||||||||||||||||||
Reflection shell | Diffraction-ID: 1
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-Processing
Software |
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Refinement | Method to determine structure: FOURIER SYNTHESIS Starting model: 4CXI Resolution: 2.2→44.37 Å / SU ML: 0.3 / Cross valid method: THROUGHOUT / σ(F): 1.34 / Phase error: 35.11
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Solvent computation | Shrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å | ||||||||||||||||||||||||
Displacement parameters | Biso max: 111.29 Å2 / Biso mean: 55.819 Å2 / Biso min: 29.27 Å2 | ||||||||||||||||||||||||
Refinement step | Cycle: final / Resolution: 2.2→44.37 Å
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Refine LS restraints |
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LS refinement shell | Refine-ID: X-RAY DIFFRACTION / Rfactor Rfree error: 0 / % reflection obs: 100 %
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