id author title date pages extension mime words sentences flesch summary cache txt cord-282604-xp71rkxc Nikolaev, EN Mass Spectrometric detection of SARS-CoV-2 virus in scrapings of the epithelium of the nasopharynx of infected patients via Nucleocapsid N protein 2020-05-25 .txt text/plain 2181 114 53 title: Mass Spectrometric detection of SARS-CoV-2 virus in scrapings of the epithelium of the nasopharynx of infected patients via Nucleocapsid N protein We have developed a mass-spectrometry based method for the detection of the SARS CoV-2 virus in nasopharynx epithelial swabs, based on the detection of the viral nucleocapsid N protein. The N protein of the SARS-COV-2 virus, the most abundant protein in the virion, is the best candidate for mass-spectrometric detection of the infection, and MS-based detection of several peptides from the SARS-COoV-2 nucleoprotein has been reported earlier by the Sinz group [4]. We have performed a pilot study on nasopharynx epithelial swabs already collected from patients with CODIV-19 for RT-qPCR and showed confident identification of the N protein of the SARS CoV-2 virus by mass-spectrometry with the use of a very basic sample preparation procedure. Mass Spectrometric Identification of SARS-CoV-2 Proteins from Gargle Solution Samples of COVID-19 Patients ./cache/cord-282604-xp71rkxc.txt ./txt/cord-282604-xp71rkxc.txt