4xmb

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Crystal structure of 2,2'-(naphthalene-1,4-diylbis(((4-methoxyphenyl)sulfonyl)azanediyl))diacetamide bound to human Keap1 Kelch domainCrystal structure of 2,2'-(naphthalene-1,4-diylbis(((4-methoxyphenyl)sulfonyl)azanediyl))diacetamide bound to human Keap1 Kelch domain

Structural highlights

4xmb is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.428Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

KEAP1_HUMAN

Publication Abstract from PubMed

Activation of the transcription factor Nrf2 has been posited to be a promising therapeutic strategy in a number of inflammatory and oxidative stress diseases due to its regulation of detoxifying enzymes. In this work, we have developed a comprehensive structure-activity relationship around a known, naphthalene-based non-electrophilic activator of Nrf2, and we report highly potent non-electrophilic activators of Nrf2. Computational docking analysis of a subset of the compound series demonstrates the importance of water molecule displacement for affinity, and the X-ray structure of di-amide 12e supports the computational analysis. One of the best compounds, acid 16b, has an IC50 of 61 nM in a fluorescence anisotropy assay and a Kd of 120 nM in a surface plasmon resonance assay. Additionally, we demonstrate that the ethyl ester of 16b is an efficacious inducer of Nrf2 target genes, exhibiting ex vivo efficacy similar to the well-known electrophilic activator, sulforaphane.

Probing the structural requirements of non-electrophilic naphthalene-based Nrf2 activators.,Jain AD, Potteti H, Richardson BG, Kingsley L, Luciano JP, Ryuzoji AF, Lee H, Krunic A, Mesecar AD, Reddy SP, Moore TW Eur J Med Chem. 2015 Sep 4;103:252-268. doi: 10.1016/j.ejmech.2015.08.049. PMID:26363505[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. Jain AD, Potteti H, Richardson BG, Kingsley L, Luciano JP, Ryuzoji AF, Lee H, Krunic A, Mesecar AD, Reddy SP, Moore TW. Probing the structural requirements of non-electrophilic naphthalene-based Nrf2 activators. Eur J Med Chem. 2015 Sep 4;103:252-268. doi: 10.1016/j.ejmech.2015.08.049. PMID:26363505 doi:http://dx.doi.org/10.1016/j.ejmech.2015.08.049

4xmb, resolution 2.43Å

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OCA