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- PDB-6fmp: Keap1 - peptide complex -

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Basic information

Entry
Database: PDB / ID: 6fmp
TitleKeap1 - peptide complex
Components
  • ACY-ASP-GLU-GLU-THR-GLY-GLU-PHE
  • Kelch-like ECH-associated protein 1
KeywordsPEPTIDE BINDING PROTEIN / Keap1 / Kelch-domain / Nrf2 / Neurodegenerative / inhibitor
Function / homology
Function and homology information


regulation of epidermal cell differentiation / Nuclear events mediated by NFE2L2 / negative regulation of response to oxidative stress / Cul3-RING ubiquitin ligase complex / centriolar satellite / ubiquitin-like ligase-substrate adaptor activity / cellular response to interleukin-4 / inclusion body / regulation of autophagy / actin filament ...regulation of epidermal cell differentiation / Nuclear events mediated by NFE2L2 / negative regulation of response to oxidative stress / Cul3-RING ubiquitin ligase complex / centriolar satellite / ubiquitin-like ligase-substrate adaptor activity / cellular response to interleukin-4 / inclusion body / regulation of autophagy / actin filament / negative regulation of DNA-binding transcription factor activity / disordered domain specific binding / KEAP1-NFE2L2 pathway / Antigen processing: Ubiquitination & Proteasome degradation / positive regulation of proteasomal ubiquitin-dependent protein catabolic process / Neddylation / cellular response to oxidative stress / midbody / ubiquitin-dependent protein catabolic process / RNA polymerase II-specific DNA-binding transcription factor binding / in utero embryonic development / Potential therapeutics for SARS / Ub-specific processing proteases / protein ubiquitination / endoplasmic reticulum / nucleoplasm / identical protein binding / cytosol / cytoplasm
Similarity search - Function
Kelch-type beta propeller / Kelch-like ECH-associated protein 1 / : / BTB-kelch protein / BTB/Kelch-associated / BTB And C-terminal Kelch / BTB And C-terminal Kelch / Kelch / Kelch motif / Kelch repeat type 1 ...Kelch-type beta propeller / Kelch-like ECH-associated protein 1 / : / BTB-kelch protein / BTB/Kelch-associated / BTB And C-terminal Kelch / BTB And C-terminal Kelch / Kelch / Kelch motif / Kelch repeat type 1 / Kelch-type beta propeller / BTB/POZ domain / BTB domain profile. / Broad-Complex, Tramtrack and Bric a brac / BTB/POZ domain / 6 Propeller / Neuraminidase / SKP1/BTB/POZ domain superfamily / Mainly Beta
Similarity search - Domain/homology
ACETATE ION / Kelch-like ECH-associated protein 1
Similarity search - Component
Biological speciesHomo sapiens (human)
synthetic construct (others)
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.92 Å
AuthorsTalapatra, S.K. / Kozielski, F. / Wells, G. / Georgakopoulos, N.D.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
UCL Secondment MRC PtD530912 United Kingdom
CitationJournal: Chembiochem / Year: 2018
Title: Modified Peptide Inhibitors of the Keap1-Nrf2 Protein-Protein Interaction Incorporating Unnatural Amino Acids.
Authors: Georgakopoulos, N.D. / Talapatra, S.K. / Gatliff, J. / Kozielski, F. / Wells, G.
History
DepositionFeb 1, 2018Deposition site: PDBE / Processing site: PDBE
Revision 1.0Aug 8, 2018Provider: repository / Type: Initial release
Revision 1.1Sep 12, 2018Group: Data collection / Database references / Category: citation
Item: _citation.journal_volume / _citation.page_first / _citation.page_last
Revision 2.0Mar 15, 2023Group: Advisory / Atomic model ...Advisory / Atomic model / Database references / Derived calculations / Non-polymer description / Polymer sequence / Source and taxonomy / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / database_2 / entity / entity_poly / entity_poly_seq / entity_src_gen / pdbx_entity_src_syn / pdbx_poly_seq_scheme / pdbx_validate_close_contact / struct_conn / struct_site / struct_site_gen
Item: _atom_site.auth_comp_id / _atom_site.label_comp_id ..._atom_site.auth_comp_id / _atom_site.label_comp_id / _chem_comp.formula / _chem_comp.formula_weight / _chem_comp.id / _chem_comp.name / _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _entity.formula_weight / _entity_poly.pdbx_seq_one_letter_code / _entity_poly_seq.mon_id / _entity_src_gen.gene_src_common_name / _pdbx_entity_src_syn.pdbx_beg_seq_num / _pdbx_entity_src_syn.pdbx_end_seq_num / _pdbx_poly_seq_scheme.mon_id / _pdbx_poly_seq_scheme.pdb_mon_id / _struct_site.pdbx_auth_comp_id / _struct_site_gen.auth_comp_id / _struct_site_gen.label_comp_id
Revision 2.1Feb 7, 2024Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model
Revision 2.2Nov 20, 2024Group: Structure summary / Category: pdbx_entry_details / pdbx_modification_feature

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Kelch-like ECH-associated protein 1
B: Kelch-like ECH-associated protein 1
C: ACY-ASP-GLU-GLU-THR-GLY-GLU-PHE
hetero molecules


Theoretical massNumber of molelcules
Total (without water)93,64023
Polymers92,5603
Non-polymers1,08020
Water1,802100
1


  • Idetical with deposited unit
  • defined by software
  • Evidence: isothermal titration calorimetry
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Buried area6130 Å2
ΔGint-36 kcal/mol
Surface area21930 Å2
MethodPISA
Unit cell
Length a, b, c (Å)76.409, 76.259, 208.284
Angle α, β, γ (deg.)90.00, 90.00, 90.00
Int Tables number19
Space group name H-MP212121

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Components

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Protein / Protein/peptide , 2 types, 3 molecules ABC

#1: Protein Kelch-like ECH-associated protein 1 / Cytosolic inhibitor of Nrf2 / INrf2 / Kelch-like protein 19


Mass: 45854.258 Da / Num. of mol.: 2 / Mutation: None
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: KEAP1, INRF2, KIAA0132, KLHL19 / Production host: Escherichia coli (E. coli) / References: UniProt: Q14145
#2: Protein/peptide ACY-ASP-GLU-GLU-THR-GLY-GLU-PHE


Mass: 851.812 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) synthetic construct (others)

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Non-polymers , 5 types, 120 molecules

#3: Chemical
ChemComp-ACT / ACETATE ION


Mass: 59.044 Da / Num. of mol.: 10 / Source method: obtained synthetically / Formula: C2H3O2
#4: Chemical
ChemComp-EDO / 1,2-ETHANEDIOL / ETHYLENE GLYCOL


Mass: 62.068 Da / Num. of mol.: 6 / Source method: obtained synthetically / Formula: C2H6O2
#5: Chemical ChemComp-CL / CHLORIDE ION


Mass: 35.453 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Cl
#6: Chemical ChemComp-NA / SODIUM ION


Mass: 22.990 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Na
#7: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 100 / Source method: isolated from a natural source / Formula: H2O

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Details

Has protein modificationY

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 4.74 Å3/Da / Density % sol: 74.07 % / Description: Rhombohedral, around 300 um
Crystal growTemperature: 277 K / Method: vapor diffusion, hanging drop / pH: 4.6
Details: 4.0 M ammonium acetate, 0.1 M sodium acetate trihydrate pH 4.6

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Data collection

DiffractionMean temperature: 80 K
Diffraction sourceSource: SYNCHROTRON / Site: Diamond / Beamline: I03 / Wavelength: 0.966 Å
DetectorType: DECTRIS PILATUS 300K / Detector: PIXEL / Date: Nov 22, 2017
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.966 Å / Relative weight: 1
ReflectionResolution: 2.92→50 Å / Num. obs: 26886 / % possible obs: 98.9 % / Redundancy: 2 % / Net I/σ(I): 7.4
Reflection shellResolution: 2.92→3.02 Å / Rmerge(I) obs: 0.625 / Mean I/σ(I) obs: 2 / Num. unique obs: 2360 / % possible all: 92.3

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Processing

Software
NameVersionClassification
PHENIX(1.13_2998: ???)refinement
iMOSFLMdata reduction
SCALAdata scaling
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 3ZGD

3zgd


Resolution: 2.92→47.922 Å / SU ML: 0.39 / Cross valid method: FREE R-VALUE / σ(F): 1.34 / Phase error: 22.87 / Stereochemistry target values: ML
RfactorNum. reflection% reflection
Rfree0.2354 1385 5.15 %
Rwork0.1808 --
obs0.1835 26886 98.9 %
Solvent computationShrinkage radii: 0.9 Å / VDW probe radii: 1.11 Å / Solvent model: FLAT BULK SOLVENT MODEL
Refinement stepCycle: LAST / Resolution: 2.92→47.922 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms4381 0 129 100 4610
Refine LS restraints
Refine-IDTypeDev idealNumber
X-RAY DIFFRACTIONf_bond_d0.0154598
X-RAY DIFFRACTIONf_angle_d1.4966237
X-RAY DIFFRACTIONf_dihedral_angle_d8.0412608
X-RAY DIFFRACTIONf_chiral_restr0.078659
X-RAY DIFFRACTIONf_plane_restr0.008832
LS refinement shell
Resolution (Å)Rfactor RfreeNum. reflection RfreeRfactor RworkNum. reflection RworkRefine-ID% reflection obs (%)
2.9204-3.02480.3321110.29152249X-RAY DIFFRACTION89
3.0248-3.14590.35441250.292533X-RAY DIFFRACTION100
3.1459-3.2890.33191520.26892542X-RAY DIFFRACTION100
3.289-3.46240.29211380.21622556X-RAY DIFFRACTION100
3.4624-3.67930.21941720.1932484X-RAY DIFFRACTION100
3.6793-3.96320.24171600.182556X-RAY DIFFRACTION100
3.9632-4.36180.19661130.13682590X-RAY DIFFRACTION100
4.3618-4.99240.1872980.13092648X-RAY DIFFRACTION100
4.9924-6.28770.19411510.15882611X-RAY DIFFRACTION100
6.2877-47.92840.22751650.18192732X-RAY DIFFRACTION100

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