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. 2024 Feb 10;16(2):276. doi: 10.3390/v16020276

Figure 2.

Figure 2

Proportional codon usage for SARS-CoV-2 reference sequence and major variants. Codon usage is calculated in terms of proportional usage per amino acid for each sample and averaged by variant. The order of bars in each grouping is as follows: A.1 (reference sequence), P.2 (zeta), B.1.429 (epsilon), B.1.351 (beta), B.1.525 (eta), B.1.526 (iota), B.1.1.7 (alpha), B.1.617.1 (kappa), B.1.617.2 (delta), P.1 (gamma), and B.1.1.529 (omicron). SARS-CoV-2 codon bias = *, HG codon bias = †, and HPT codon bias = ‡.