ISDA

Entry Detail

PDB ID:

8FUR

Keywords:

OXIDOREDUCTASE/INHIBITOR

Title:

Crystal structure of human IDO1 with compound 11

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2023-01-18

Release Date:

2023-04-26

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.29 Å

R-Value Free:

0.29

R-Value Work:

0.27

R-Value Observed:

0.28

Space Group:

C 1 2 1

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Indoleamine 2,3-dioxygenase 1
Chain IDs:A, B, C, D
Chain Length:406
Number of Molecules:4
Biological Source:Homo sapiens

UniProt ID:P14902 Pfam ID:PF01231 EC:1.13.11.11

Ligand Molecules

Y9X

Primary Citation

Synthesis and biological evaluation of biaryl alkyl ethers as inhibitors of IDO1.

Markwalder, J.A, Balog, A.J, Williams, D.K, Nara, S.J, Reddy, R, Roy, S, Kanyaboina, Y, Li, X, Johnston, K, Fan, Y, Lewis, H, Marsilio, F, Yan, C, Critton, D, Newitt, J.A, Traeger, S.C, Wu, D.R, Jure-Kunkel, M.N, Jayaraman, L, Lin, T.A, Sinz, M.W, Hunt, J.T, Seitz, S.P.Show

Bioorg.Med.Chem.Lett. 88 129280 129280 (2023)

PMID: 37054759 DOI: 10.1016/j.bmcl.2023.129280

Abstact

Starting from the dialkylaniline indoleamine 2,3-dioxygenase 1 (IDO1) inhibitor lead 3 (IDO1 HeLa IC50 = 7.0 nM), an iterative process of synthesis and screening led to cyclized analog 21 (IDO1 HeLa IC50 = 3.6 nM) which maintained the high potency of 3 while addressing issues of lipophilicity, cytochrome P450 (CYP) inhibition, hERG (human potassium ion channel Kv11.1) inhibition, Pregnane X Receptor (PXR) transactivation, and oxidative metabolic stability. An x-ray crystal structure of a biaryl alkyl ether 11 bound to IDO1 was obtained. Consistent with our earlier results, compound 11 was shown to bind to the apo form of the enzyme.

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