6HWS | pdb_00006hws

Keap1 - inhibitor complex

• PDB DOI: https://doi.org/10.2210/pdb6HWS/pdb

• Classification: PEPTIDE BINDING PROTEIN
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2018-10-13 Released: 2019-10-30 
• Deposition Author(s): Talapatra, S.K., Kozielski, F., Wells, G., Georgakopoulos, N.D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 
  0.189 (Depositor), 0.190 (DCC) 
• R-Value Work: 
  0.154 (Depositor), 0.155 (DCC) 
• R-Value Observed: 
  0.155 (Depositor) 

Starting Model: experimental

Literature

Keap1-inhibitor complex

Talapatra, S.K., Kozielski, F., Wells, G., Georgakopoulos, N.D.

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: isothermal titration calorimetry

Macromolecule Content 

• Total Structure Weight: 32.55 kDa 
• Atom Count: 2,829 
• Modeled Residue Count: 285 
• Deposited Residue Count: 289 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kelch-like ECH-associated protein 1	A	289	Homo sapiens	Mutation(s): 0  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

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GX8	C [auth A]	2-[[4-[2-hydroxy-2-oxoethyl-(4-methoxyphenyl)sulfonyl-amino]-3-phenylmethoxy-phenyl]-(4-methoxyphenyl)sulfonyl-amino]ethanoic acid C31 H30 N2 O11 S2 WLXLBNHWWYEQCG-UHFFFAOYSA-N
EDO	B [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
NA	D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
GX8	BindingDB:  6HWS	Kd: 500 (nM) from 1 assay(s)
		IC50: min: 575, max: 790 (nM) from 2 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free:  0.189 (Depositor), 0.190 (DCC) 
• R-Value Work:  0.154 (Depositor), 0.155 (DCC) 
• R-Value Observed: 0.155 (Depositor) 

Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 125.96	α = 90
b = 75.74	β = 106.43
c = 48.88	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
iMOSFLM	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

& Funding Information

Deposition Data

• Released Date: 2019-10-30 
Deposition Author(s): Talapatra, S.K., Kozielski, F., Wells, G., Georgakopoulos, N.D.

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Funding Organization	Location	Grant Number
	United Kingdom	530912

Revision History  

• Version 1.0: 2019-10-30
  Type: Initial release
  
• Version 1.1: 2024-01-24
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.2: 2024-11-13
  Changes: Structure summary