2.1. Study proteins
This article studied the 1ab polyprotein of SARS-CoV-2, SARS-CoV, and
BatCoV RaTG13 . Also, the structural and accessory proteins found in
SARS-CoV-2 and BatCoV RaTG13 were studied including the spike protein
(S), orf3, envelope protein (E), membrane protein (M), orf6, orf7a,
orf7b, orf8, and ncucleocapsid protein (N) (Table.2). The amino acid
sequences were obtained from the National Center for Biotechnology
Information (NCBI) site (https://www.ncbi.nlm.nih.gov/protein)
(Table 1).