id author title date pages extension mime words sentences flesch summary cache txt cord-273882-tqdcb3oo Pratibha, Ubiquitous Forbidden Order in R-group classified protein sequence of SARS-CoV-2 and other viruses 2020-08-21 .txt text/plain 1958 122 62 title: Ubiquitous Forbidden Order in R-group classified protein sequence of SARS-CoV-2 and other viruses We report here a novel method of species characterization based upon the order of these R-group classified amino acids in the linear sequence of the side chains associated with the codon triplets. These ubiquitous forbidden orders (UFO) are unique structures of the viruses that may provide an insight into viruses' chemical behavior and the folding patterns of the proteins. Next, we analyzed protein sequences of 26 viruses (Figures 2, 3 , and Supplementary Figures 1 -4) to search for a ubiquitous forbidden order in each one of them. Among the 26 viruses studied, we noted that the forbidden order BPAB is unique to SARS CoV-2, Rubella, and Avian IB (Figure 3) . We found that at R-group classified sequences of N, B, A, and P in these two samples are identical up to level 4 of the amino acid ordering in the protein structures (Figures 4a, d, g) . ./cache/cord-273882-tqdcb3oo.txt ./txt/cord-273882-tqdcb3oo.txt