ISDA

Deposition Date 2013-10-03

Release Date 2014-02-19

Last Version Date 2024-10-16

Entry Detail

PDB ID:

4N1B

Keywords:

TRANSCRIPTION/INHIBITOR

Title:

STRUCTURE OF KEAP1 KELCH DOMAIN WITH(1S,2R)-2-[(1S)-1-[(1-oxo-2,3-dihydro-1H-isoindol-2-Yl)methyl]-1,2,3,4-tetrahydroisoquinoline-2-Carbonyl]cyclohexane-1-carboxylic acid

Biological Source:

Source Organism:

Homo sapiens (Taxon ID: 9606)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.55 Å

R-Value Free:

0.28

R-Value Work:

0.24

R-Value Observed:

0.24

Space Group:

P 21 2 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Kelch-like ECH-associated protein 1
Gene (Uniprot):KEAP1
Mutations:D354R
Chain IDs:A, B, C
Chain Length:300
Number of Molecules:3
Biological Source:Homo sapiens

UniProt ID:Q14145 Pfam ID:PF01344

Ligand Molecules

2FS

ACT

Primary Citation

Binding Mode and Structure-Activity Relationships around Direct Inhibitors of the Nrf2-Keap1 Complex.

Jnoff, E, Albrecht, C, Barker, J.J, Barker, O, Beaumont, E, Bromidge, S, Brookfield, F, Brooks, M, Bubert, C, Ceska, T, Corden, V, Dawson, G, Duclos, S, Fryatt, T, Genicot, C, Jigorel, E, Kwong, J, Maghames, R, Mushi, I, Pike, R, Sands, Z.A, Smith, M.A, Stimson, C.C, Courade, J.P.Show

Chemmedchem 9 699 705 (2014)

PMID: 24504667 DOI: 10.1002/cmdc.201300525

Abstact

An X-ray crystal structure of Kelch-like ECH-associated protein (Keap1) co-crystallised with (1S,2R)-2-[(1S)-1-[(1,3-dioxo-2,3-dihydro-1H-isoindol-2-yl)methyl]-1,2,3,4-tetrahydroisoquinolin-2-carbonyl]cyclohexane-1-carboxylic acid (compound (S,R,S)-1 a) was obtained. This X-ray crystal structure provides breakthrough experimental evidence for the true binding mode of the hit compound (S,R,S)-1 a, as the ligand orientation was found to differ from that of the initial docking model, which was available at the start of the project. Crystallographic elucidation of this binding mode helped to focus and drive the drug design process more effectively and efficiently.

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Primary Citation of related structures