8EJR | pdb_00008ejr

Kelch domain of human KEAP1 bound to Nrf2 linear peptide, Ac-GDPETGE-NH2

• PDB DOI: https://doi.org/10.2210/pdb8EJR/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2022-09-18 Released: 2023-09-27 
• Deposition Author(s): Muellers, S.N., Allen, K.N.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.08 Å
• R-Value Free: 
  0.249 (Depositor), 0.250 (DCC) 
• R-Value Work: 
  0.222 (Depositor), 0.220 (DCC) 
• R-Value Observed: 
  0.223 (Depositor) 

Literature

The benefit of cyclization: a comparison of cyclic and linear peptide inhibitors of the KEAP1/Nrf2 protein-protein interaction

Muellers, S.N., Allen, K.N., Whitty, A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 74.53 kDa 
• Atom Count: 4,674 
• Modeled Residue Count: 575 
• Deposited Residue Count: 681 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kelch-like ECH-associated protein 1	A, B	336	Homo sapiens	Mutation(s): 3  Gene Names: KEAP1, INRF2, KIAA0132, KLHL19
UniProt & NIH Common Fund Data Resources
Find proteins for Q14145 (Homo sapiens) Explore Q14145  Go to UniProtKB:  Q14145
PHAROS:  Q14145 GTEx:  ENSG00000079999

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Linear peptide from Nuclear factor erythroid 2-related factor 2	C	9	Homo sapiens	Mutation(s): 4
UniProt & NIH Common Fund Data Resources
Find proteins for Q16236 (Homo sapiens) Explore Q16236  Go to UniProtKB:  Q16236
PHAROS:  Q16236 GTEx:  ENSG00000116044

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.08 Å
• R-Value Free:  0.249 (Depositor), 0.250 (DCC) 
• R-Value Work:  0.222 (Depositor), 0.220 (DCC) 
• R-Value Observed: 0.223 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 162.806	α = 90
b = 68.909	β = 117.658
c = 77.586	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-09-27 
Deposition Author(s): Muellers, S.N., Allen, K.N.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2023-09-27
  Type: Initial release
  
• Version 1.1: 2024-10-16
  Changes: Structure summary