Article Publish Status: FREE
Abstract Title:

Zincion inhibits SARS-CoV-2 main protease and viral replication.

Abstract Source:

Chem Commun (Camb). 2021 Sep 13. Epub 2021 Sep 13. PMID: 34514483

Abstract Author(s):

Love Panchariya, Wajahat Ali Khan, Shobhan Kuila, Kirtishila Sonkar, Sibasis Sahoo, Archita Ghoshal, Ankit Kumar, Dileep Kumar Verma, Abdul Hasan, Mohd Azeem Khan, Niyati Jain, Amit Kumar Mohapatra, Shubhashis Das, Jitendra K Thakur, Souvik Maiti, Ranjan Kumar Nanda, Rajkumar Halder, Sujatha Sunil, Arulandu Arockiasamy

Article Affiliation:

Love Panchariya


Zinc deficiency is linked to poor prognosis in COVID-19 patients while clinical trials with zinc demonstrate better clinical outcomes. The molecular targets and mechanistic details of the anti-coronaviral activity of zinc remain obscure. We show that zinc not only inhibits the SARS-CoV-2 main protease (Mpro) with nanomolar affinity, but also viral replication. We present the first crystal structure of the Mpro-Zncomplex at 1.9Å and provide the structural basis of viral replication inhibition. We show that Zncoordinates with the catalytic dyad at the enzyme active site along with two previously unknown water molecules in a tetrahedral geometry to form a stable inhibited Mpro-Zncomplex. Further, the natural ionophore quercetin increases the anti-viral potency of Zn. As the catalytic dyad is highly conserved across SARS-CoV, MERS-CoV and all variants of SARS-CoV-2, Znmediated inhibition of Mpro may have wider implications.

Study Type : In Vitro Study

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