Journal: Scientific Reports
Article Title: Analysis of IgM, IgA, and IgG isotype antibodies Directed against SARS-CoV-2 spike glycoprotein and ORF8 in the course of COVID-19
doi: 10.1038/s41598-021-88356-8
Figure Lengend Snippet: Recombinant SARS-CoV-2 proteins. ( a ) 4–12% Bis–Tris gel loaded with 4 µg of SARS-CoV-2 spike protein (S), the RBD of spike protein (R), subunit 1 of the spike protein (S1), and ORF8 protein (O) stained with Coomassie brilliant blue R 250. ( b ) Immunoblot with 2 µg of Strep-tagged SARS-CoV-2 proteins loaded in the same manner as the Coomassie gel in ( a ), and detected with a Strep-Tactin-HRP conjugate. ( c ) Silver staining with 2 µg of SARS-CoV-2 S protein loaded in the same manner as the Coomassie gel in ( a ). All cropped lanes of different immunoblots or gels are divided by white space. Immunoblots and gels were only cut in width and lanes are shown in their full length.
Article Snippet: Enzyme-linked immunosorbent binding assay (ELISA)ELISA was performed with an IDK® anti-SARS-CoV-2 IgG ELISA kit from Immundiagnostik AG (Germany) strictly following the provided protocol.
Techniques: Recombinant, Staining, Silver Staining, Western Blot