5GIT

BTB domain of KEAP1 in complex with XX3

• PDB DOI: https://doi.org/10.2210/pdb5GIT/pdb

• Classification: TRANSCRIPTION
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2016-06-25 Released: 2017-06-28 
• Deposition Author(s): Zhu, L.L., Li, H.L., Wu, F.S., Xiong, R.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.19 Å
• R-Value Free: 0.278 
• R-Value Work: 0.216 
• R-Value Observed: 0.220 

Literature

Britanin Ameliorates Cerebral Ischemia-Reperfusion Injury by Inducing the Nrf2 Protective Pathway.

Wu, G.Z., Zhu, L.L., Yuan, X., Chen, H., Xiong, R., Zhang, S.D., Cheng, H., Shen, Y.H., An, H.Z., Li, T.J., Li, H.L., Zhang, W.D.

(2017) Antioxid Redox Signal 27: 754-768

• PubMed: 28186440 
• DOI: https://doi.org/10.1089/ars.2016.6885
• Primary Citation of Related Structures:  
  5GIT


• PubMed Abstract: 
  

  Oxidative stress is considered the major cause of tissue injury after cerebral ischemia. The nuclear factor erythroid 2-related factor 2 (Nrf2) pathway is one of the most important defensive mechanisms against oxidative stresses and has been confirmed as a target for stroke treatment. Thus, we desired to find new Nrf2 activators and test their neuronal protective activity both in vivo and in vitro.

---

Organizational Affiliation: 

1 Department of Phytochemistry, School of Pharmacy, Second Military Medical University , Shanghai, P.R. China .

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 15.66 kDa 
• Atom Count: 1,072 
• Modelled Residue Count: 130 
• Deposited Residue Count: 137 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kelch-like ECH-associated protein 1	A	137	Homo sapiens	Mutation(s): 0  Gene Names: KEAP1
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 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
XXT	B [auth A]	[(3aS,5R,5aS,6S,8S,8aS,9S,9aR)-9-acetyloxy-8-hydroxy-5,8a-dimethyl-1-methylidene-2-oxo-4,5,5a,6,7,8,9,9a-octahydro-3aH-azuleno[6,5-b]furan-6-yl] acetate C19 H26 O7 JXEGMONJOSAULB-IZZBGLMFSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.19 Å
• R-Value Free: 0.278 
• R-Value Work: 0.216 
• R-Value Observed: 0.220 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.45	α = 90
b = 42.45	β = 90
c = 265.15	γ = 120

Software Package:

Software Name	Purpose
REFMAC	refinement
HKL-2000	data reduction
SCALA	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2017-06-28 
Deposition Author(s): Zhu, L.L., Li, H.L., Wu, F.S., Xiong, R.

Revision History  

• Version 1.0: 2017-06-28
  Type: Initial release
  
• Version 1.1: 2019-01-23
  Changes: Data collection, Database references