Targeted Covalent Inhibition of FK506 Binding Protein 35.

ACS medicinal chemistry letters
Authors
Abstract

FK506-binding protein 35, FKBP35, has been implicated as an essential malarial enzyme. Rapamycin and FK506 exhibit antiplasmodium activity in cultured parasites. However, due to the highly conserved nature of the binding pockets of FKBPs and the immunosuppressive properties of these drugs, there is a need for compounds that selectively inhibit FKBP35 and lack the undesired side effects. In contrast to human FKBPs, FKBP35 contains a cysteine, C106, adjacent to the rapamycin binding pocket, providing an opportunity to develop targeted covalent inhibitors of FKBP35. Here, we synthesize inhibitors of FKBP35, show that they directly bind FKBP35 in a model cellular setting, selectively covalently modify C106, and exhibit antiplasmodium activity in blood-stage cultured parasites.

Year of Publication
2020
Journal
ACS medicinal chemistry letters
Volume
11
Issue
11
Pages
2131-2138
Date Published
11/2020
ISSN
1948-5875
DOI
10.1021/acsmedchemlett.0c00272
PubMed ID
33209191
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