Biomol NMR Assign . 1 H, 13 C, and 15 N backbone chemical shift assignments of the nucleic acid-binding domain of SARS-CoV-2 non-structural protein 3e

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Biomol NMR Assign


. 2020 Aug 8.
doi: 10.1007/s12104-020-09971-6. Online ahead of print.
¹ H, ¹³ C, and ¹⁵ N backbone chemical shift assignments of the nucleic acid-binding domain of SARS-CoV-2 non-structural protein 3e


Sophie M Korn ^{1 2} , Karthikeyan Dhamotharan ^{1 2} , Boris F?rtig ^{3 2} , Martin Hengesbach ^{3 2} , Frank L?hr ^{4 2} , Nusrat S Qureshi ^{3 2} , Christian Richter ^{3 2} , Krishna Saxena ^{3 2} , Harald Schwalbe ^{3 2} , Jan-Niklas Tants ^{1 2} , Julia E Weigand ⁵ , Jens W?hnert ^{1 2} , Andreas Schlundt ^{6 7}



Affiliations

• PMID: 32770392
• DOI: 10.1007/s12104-020-09971-6

Abstract

The ongoing pandemic caused by the Betacoronavirus SARS-CoV-2 (Severe Acute Respiratory Syndrome Coronavirus-2) demonstrates the urgent need of coordinated and rapid research towards inhibitors of the COVID-19 lung disease. The covid19-nmr consortium seeks to support drug development by providing publicly accessible NMR data on the viral RNA elements and proteins. The SARS-CoV-2 genome encodes for approximately 30 proteins, among them are the 16 so-called non-structural proteins (Nsps) of the replication/transcription complex. The 217-kDa large Nsp3 spans one polypeptide chain, but comprises multiple independent, yet functionally related domains including the viral papain-like protease. The Nsp3e sub-moiety contains a putative nucleic acid-binding domain (NAB) with so far unknown function and consensus target sequences, which are conceived to be both viral and host RNAs and DNAs, as well as protein-protein interactions. Its NMR-suitable size renders it an attractive object to study, both for understanding the SARS-CoV-2 architecture and drugability besides the classical virus' proteases. We here report the near-complete NMR backbone chemical shifts of the putative Nsp3e NAB that reveal the secondary structure and compactness of the domain, and provide a basis for NMR-based investigations towards understanding and interfering with RNA- and small-molecule-binding by Nsp3e.

Keywords: Covid19-NMR; Non-structural protein; Nucleic acid-binding domain; Protein drugability; SARS-CoV-2; Solution NMR-spectroscopy.