N-Terminomics for the Identification of In Vitro Substrates and Cleavage Site Specificity of the SARS-CoV-2 Main Protease

© 2020 The Authors. Proteomics published by Wiley-VCH GmbH..

The genome of coronaviruses, including SARS-CoV-2, encodes for two proteases, a papain like (PLpro ) protease and the so-called main protease (Mpro ), a chymotrypsin-like cysteine protease, also named 3CLpro or non-structural protein 5 (nsp5). Mpro is activated by autoproteolysis and is the main protease responsible for cutting the viral polyprotein into functional units. Aside from this, it is described that Mpro proteases are also capable of processing host proteins, including those involved in the host innate immune response. To identify substrates of the three main proteases from SARS-CoV, SARS-CoV-2, and hCoV-NL63 coronviruses, an LC-MS based N-terminomics in vitro analysis is performed using recombinantly expressed proteases and lung epithelial and endothelial cell lysates as substrate pools. For SARS-CoV-2 Mpro , 445 cleavage events from more than 300 proteins are identified, while 151 and 331 Mpro derived cleavage events are identified for SARS-CoV and hCoV-NL63, respectively. These data enable to better understand the cleavage site specificity of the viral proteases and will help to identify novel substrates in vivo. All data are available via ProteomeXchange with identifier PXD021406.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:21

Enthalten in:

Proteomics - 21(2021), 2 vom: 22. Jan., Seite e2000246

Sprache:

Englisch

Beteiligte Personen:

Koudelka, Tomas [VerfasserIn]
Boger, Juliane [VerfasserIn]
Henkel, Alessandra [VerfasserIn]
Schönherr, Robert [VerfasserIn]
Krantz, Stefanie [VerfasserIn]
Fuchs, Sabine [VerfasserIn]
Rodríguez, Estefanía [VerfasserIn]
Redecke, Lars [VerfasserIn]
Tholey, Andreas [VerfasserIn]

Links:

Volltext

Themen:

Coronavirus 3C Proteases
Covid19
EC 3.4.22.28
EIF4G1 protein, human
Eukaryotic Initiation Factor-4G
Isobaric labeling
Journal Article
LC-MS
Peptide Fragments
Protease substrates
Research Support, Non-U.S. Gov't
Terminomics
Viral Proteins

Anmerkungen:

Date Completed 18.01.2021

Date Revised 07.12.2022

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1002/pmic.202000246

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM316800813