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Deprecated: Implicit conversion from float 229.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Chem+Commun+(Camb) 2021 ; 57 (67): 8352-8355 Nephropedia Template TP
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Dinitrosyl iron complexes (DNICs) as inhibitors of the SARS-CoV-2 main protease #MMPMID34337637
Pectol DC; DeLaney CR; Zhu J; Mellott DM; Katzfuss A; Taylor ZW; Meek TD; Darensbourg MY
Chem Commun (Camb) 2021[Aug]; 57 (67): 8352-8355 PMID34337637show ga
By repurposing DNICs designed for other medicinal purposes, the possibility of protease inhibition was investigated in silico using AutoDock 4.2.6 (AD4) and in vitro via a FRET protease assay. AD4 was validated as a predictive computational tool for coordinatively unsaturated DNIC binding using the only known crystal structure of a protein-bound DNIC, PDB- (calculation RMSD = 1.77). From the in silico data the dimeric DNICs TGTA-RRE, [(mu-S-TGTA)Fe(NO)(2)](2) (TGTA = 1-thio-beta-d-glucose tetraacetate) and TG-RRE, [(mu-S-TG)Fe(NO)(2)](2) (TG = 1-thio-beta-d-glucose) were identified as promising leads for inhibition via coordinative inhibition at Cys-145 of the SARS-CoV-2 Main Protease (SC2M(pro)). In vitro studies indicate inhibition of protease activity upon DNIC treatment, with an IC(50) of 38 +/- 2 muM for TGTA-RRE and 33 +/- 2 muM for TG-RRE. This study presents a simple computational method for predicting DNIC-protein interactions; the in vitro study is consistent with in silico leads.