6W4C image
Entry Detail
PDB ID:
6W4C
Keywords:
Title:
Crystal structure of HAO1 in complex with indazole acid inhibitor - compound 5
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2020-03-10
Release Date:
2021-05-12
Method Details:
Experimental Method:
Resolution:
1.75 Å
R-Value Free:
0.19
R-Value Work:
0.16
R-Value Observed:
0.16
Space Group:
I 4
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Hydroxyacid oxidase 1
Chain IDs:A
Chain Length:368
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
Discovery of Novel, Potent Inhibitors of Hydroxy Acid Oxidase 1 (HAO1) Using DNA-Encoded Chemical Library Screening.
J.Med.Chem. 64 6730 6744 (2021)
PMID: 33955740 DOI: 10.1021/acs.jmedchem.0c02271

Abstact

Inhibition of hydroxy acid oxidase 1 (HAO1) is a strategy to mitigate the accumulation of toxic oxalate that results from reduced activity of alanine-glyoxylate aminotransferase (AGXT) in primary hyperoxaluria 1 (PH1) patients. DNA-Encoded Chemical Library (DECL) screening provided two novel chemical series of potent HAO1 inhibitors, represented by compounds 3-6. Compound 5 was further optimized via various structure-activity relationship (SAR) exploration methods to 29, a compound with improved potency and absorption, distribution, metabolism, and excretion (ADME)/pharmacokinetic (PK) properties. Since carboxylic acid-containing compounds are often poorly permeable and have potential active glucuronide metabolites, we undertook a brief, initial exploration of acid replacements with the aim of identifying non-acid-containing HAO1 inhibitors. Structure-based drug design initiated with Compound 5 led to the identification of a nonacid inhibitor of HAO1, 31, which has weaker potency and increased permeability.

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